battery specialist

2018年1月17日星期三

the best battery online stores

2017年12月19日星期二

Dell Latitude 5285 2-in-1 Business Laptop

Welcome to a Biomedical Battery specialist of the DELL Laptop Battery

Alongside the new Alienware laptops and Inspiron 7000 Gaming laptops, Dell unveiled the Latitude 5000 Series 2-in-1 ahead of CES 2017, with the Latitude 5285 2-in-1 laptop for business. With battery such as DELL Alienware M17X R4 Battery, DELL 6MT4T Battery, DELL G5M10 Battery, DELL 7V69Y Battery, DELL R9XM9 Battery, DELL 8V5GX Battery, DELL WYJC2 Battery, DELL Latitude 3150 Battery, DELL Latitude 3160 Battery, DELL Latitude E5250 Battery, DELL Latitude E5450 Battery, DELL Latitude E5550 Battery Priced starting $899 (roughly Rs. 61,500), the laptop will be available from February 28.

The Dell Latitude 5285 2-in-1 offers the "ultimate in 2-in-1 mobility", and is designed to be "powerful, secure and last all day." Touting its light weight of less than 1.23kg including the optional travel keyboard and the power of a seventh-generation Intel Core processor, the company says the laptop offers the "the performance of a laptop and flexibility of a tablet." The tablet half comes with an 'auto-deploy kickstand'.

Specifications of the Windows 10-based Latitude 5285 2-in-1 include a 12.3-inch full-HD (1920x1080 pixels) touch display with Corning Gorilla Glass protection, and a choice of seventh-generation Intel Core processors (with U Dual Core or vPro options) coupled with Intel HD Graphics 620. The base model ships with 4GB of 1866MHz LPDDR3 RAM, going up to 16GB on request.

As for storage, Latitude 5285 2-in-1 users have a choice of up to 256GB M.2 SATA SSD, up to 1TB PCIe NVMe M.2 SSD, or up to 512GB PCIe OPAL M.2 SED. The tablet section features an 8-megapixel rear camera and a 5-megapixel front-facing camera. Ports on the tablet include two USB Type-C ports, one USB 3.0 port, 1 microSD card reader, 1 Micro-SIM slot (in some models), and a port for the travel keyboard.

The Latitude 5285 2-in-1 tablet weighs less than 910 grams and measures 292x208.8x9.76mm. Connectivity options on the base model include Wi-Fi 802.11ac and Bluetooth v4.1, and the company is offering optional mobile broadband with Qualcomm and Dell modems. Dell is also touting a stereo speaker configuration with Waves MaxxAudio Pro processing. Users have the option of a 31.5Whr or 42Whr battery, alongside the choice of a 45W or 65W adapter.

Optional security features for the Dell Latitude 5285 2-in-1 include an optional FIPS 201 Smartcard reader, touch Fingerprint reader, contactless SC Reader/NFC, Control Vault 2.0 Advanced Authentication with FIPS 140-2 Level 3 Certification, TPM2.0 FIPS 140-2 Certified, TCG Certified, as well as optional DellData Protection and Management Software such as Endpoint Security Suite Enterprise, Threat Defense, Protected Workspace, Secure Lifecycle, MozyPro, and MozyEnterprise.

2016年12月25日星期日

Mindray Z5 Portable Doppler Ultrasound System

Welcome to a Biomedical Battery specialist of the Mindray Battery

Your unique requirements of superior image quality, affordability, versatility and mobility can now be met with the Mindray Z5 Portable Doppler System. With a rare combination of high performance and low cost, the Z5 is the result of Mindray's continuous effort toward making healthcare more accessible. The Z5 can be used for a routine indoor scan or an outdoor emergency. Switching from conventional black and white systems to a highly efficient portable color Doppler system is easier than ever before. The Mindray Z5 - helping you reach beyond boundaries.

System at a glance
.15" LCD with angle adjustment
.Less than 19.4 lb (8.8 kg) without cart
.Li-ion battery lasting up to 100 minutes such as Mindray D6 Battery
.Less than 30 second boot-up time and 5 second wake-up
.Dual transducer connectors

Full-featured imaging technology
.Phase shift harmonics
.iBeam spatial compounding imaging
.iScape panoramic imaging
.iClear speckle reduction

Comprehensive clinical application
Supports up to 8 transducers
.Exam types include: OB/GYN, abdomen, small parts, urology, cardiology and more

Prominent ergonomics and workflow
iZoom: full screen zoom function
.User-defined functions
.iTouch: one key image optimization
.iStation: patient management software with 320GB hard disk
.Mobile cart with storage bin

2013年12月19日星期四

iRobot Roomba 800 Series vacuum

Welcome to a Vacuum Cleaner Battery specialist of the iRobot Roomba Battery

iRobot has introduced its latest Roomba vacuum, the Roomba 800 Series. With this latest iteration of the cordless, self-operating vacuum, the company has elected to get rid of bristles in favor of AeroForce technology, which is said to pick up 50-percent more dirt and other trappings than previous Roomba models. There are two rotors in place, each made of rubber with treads, that spins to break up and grab debris. We've got a video of the system in action after the jump.

With the new design, iRobot says jams and hair clogs are nearly impossible, and that overall cleaning is greatly improved over previous models. Particles -- such as allergens -- are trapped in an air filter, keeping them from being dispersed around the room, while the angle of the rubber treads and the system's design both allows for maximum debris churning and optimal suction on the floor's surface.

Aside from the changes made to the 800 Series with battery like iRobot Roomba 80501 Battery, iRobot Roomba 500 Battery, iRobot Roomba 510 Battery, iRobot Roomba 530 Battery, iRobot Roomba 560 Battery, iRobot Roomba 580 Battery, iRobot Roomba 600 Battery, iRobot Roomba 700 Battery, iRobot Scooba 5800 Battery, iRobot Scooba 5900 Battery, iRobot Scooba 6000 Battery, iRobot Scooba 350 Battery, it largely works the same way you'd expect, with the vacuum offering the press-to-clean-button in the center. Owners can schedule cleaning times for when they're not home, and a combination of software and sensors allows it to travel around a room without sucking up stray wires or falling down stairs. When finished, the vacuum returns to its cradle.

Said Roomba 800 Product Manager Max Makeev: "With the Roomba 800 Series, we developed a highly efficient cleaning system that will revolutionize robotic vacuuming. From the air flow accelerator to the high efficiency vacuum, everything about AeroForce was designed to multiply and maximize cleaning performance. In fact, the Roomba 800 Series has a 5x more powerful vacuum that removes up to 50-percent more dirt, debris, hair, and harmful allergens than previous Roomba models."

Fuel Cell Specs for Laptops Finalized

Welcome to a Laptop Battery specialist of the Acer Laptop Battery

Fuel Cell technology is the latest in cutting edge technology for the mobile market. Fuel Cells promise much more energy capacity laptops. Early reports indicate it would not be uncommon for a Fuel Cell Battery such as Acer Aspire 9400 Battery, Acer TravelMate 2460 Battery, Acer Aspire One ZG5 Battery, Acer UM08A51 Battery, Acer Ferrari 5000 Battery, Acer TravelMate 8200 Battery, Acer BTP-50T3 Battery, Acer BATBL50L8H Battery, Acer Ferrari 1000 Battery, Acer TravelMate 3000 Battery, Acer Extensa 4120 Battery, Acer Aspire 2420 Battery to power a laptop for 8 hours or more off a single charge.

The Mobile PC Extended Battery Life Working Group is an organization spearheaded by Intel Corporation. Among the members are companies such as Acer, Asustek Computer, Compal Electronics, Dell, First International Computer, Fujitsu, Inventec, Legend Holdings, LG Electronics, Matsushita, Microsoft, NEC, Samsung, Toshiba, Quanta and Wistron.

In order for a Fuel Cell battery to work, a completely redesigned system needs to be created that supports a fuel pump, special cooling and even a starter battery.

2013年4月2日星期二

Nikon D7100

Welcome to a Battery Grip specialist of the Nikon Battery Grip

In a long line of expert-level APS-C SLRs, the Nikon D7100 has arrived as a descendant of the D7000—a favourite of Nikon aficionados and a hit among reviewers—while also taking over from the ageing Nikon D300s, which is still hanging around despite being released in 2009. As a model that seeks to accommodate both enthusiast consumers and pro users, the D7100 is being billed as the best ever Nikon APS-C SLR. So does it live up to expectations?

Over time, Nikon's design has been getting gradually rounder, with curvier corners and a generally less stocky kind of look. Even though the D7100 is slightly larger than its predecessor, it's actually a bit lighter as Nikon has used more more magnesium alloy, notably on the top of the camera. The "100% magnesium" frame seems to be reserved for Nikon's higher-end models for the time being. As usual, the finish is very high-quality and the controls all work well, with nicely notched dials and pleasant-to-press buttons. Our only slight regret is that the shutter-release has quite a long press. On the other hand, we very much like the reworked grip handle, with a new curvier design that's comfortable to hold no matter how big or small your hands. You won't be able to complain about grip such as Nikon MB-D80 Battery Grip, Nikon D5000 Battery Grip, Nikon EL4A Battery Grip, Nikon MB-D10 Battery Grip, Nikon MB-D11 Battery Grip, Nikon MB-D31 Battery Grip, Nikon MB-D51 Battery Grip, Pentax BP-K7 Battery Grip, Pentax K10D Battery Grip, Sony VG-B50AM Battery Grip, Sony VG-B30AM Battery Grip here!

The general controls and layout haven't changed too much in the D7100. New features include a lock button in the middle of the mode-selection dial, a Live View button in the middle of the photo/video mode switch and an extra button down the left-hand side of the screen. This new and rather strangely named "i" button offers direct access to the camera's main settings.

The screen, however, has changed quite a bit. First of all, the two little clips for attaching a plastic screen protector have gone. Today's Gorilla-Glass-style protective finishes are clearly considered sufficiently robust to do away with such "unsightly" add-ons (even if they are very practical). It's like the end of an era! But nostalgic Nikon users may find solace in the screen's boosted specs. The screen has been upped from 3" to 3.2" in size and boasts 1,229,000-dot definition thanks to the new RGBW backlighting system (Red, Green, Blue, White) with white pixels on hand to push up the brightness. Plus, our tests found that screen calibration is spot on in this DSLR. We measured the average colour temperature at 6468 K, the average Delta E 94 (colour fidelity) at 2.1 and the gamma bang on 2.2. If we really wanted to nit-pick we could say that blacks are a bit too light and whites are a bit too dark, but these "faults" aren't really problematic. In fact, they actually help improve the screen's readability!

The D7100 has a good range of connections, with microphone and headphones ports, a USB connection (but still no sign of USB 3.0), a HDMI port, a remote control port and two memory card slots (SDXC-compatible). The memory cards can be filled up sequentially one after the other, or used in parallel to back up shots or to save different formats. For Wi-Fi you'll need to pick up the optional WU-1a adapter. Similarly, a separate module (GP-1) is available for GPS. And anyone who's not satisfied with the built-in flash can pick up the WR-1 wireless remote controller—a snip at £650!

The menus are typically Nikon-esque. Packed full to the brim with settings and detailed options, they can feel quite dense. You may need to give up your bed-time novel for a while in order to get through the instruction manual. But the upside is that absolutely everything can be user-adjusted, which is great for users looking to set up their SLR to suit particular preferences. And that makes perfect sense when you think about who this camera is aimed at. Otherwise, we still think it's a shame that the ISO AUTO option isn't active by default, and that you still have to go into the menu to delete several shots at once (that doesn't make editing any easier).

Canon unveils EOS T5i and Rebel SL1

Welcome to a Battery Grip specialist of the Canon Battery Grip

If you haven't already come to grips like Canon BG-E2N Battery Grip, Canon EOS 350D Battery Grip, Canon EOS Rebel XSi Battery Grip, Canon Eos 5D Mark II Battery Grip, Canon EOS 7D Battery Grip, Canon EOS 550D Battery Grip, Canon 60D Battery Grip, Canon EOS 1100D Battery Grip, Canon 5D Battery Grip, Nikon D60 Battery Grip, Nikon D3000 Battery Grip with the fact that Canon won't be releasing a mirrorless camera with DSLR-like performance, you might as well cut your losses now. Instead of replacing the sluggish EOS M with a compelling shooter, the company has decided to focus on shrinking its DSLR. The result, the EOS Rebel SL1, is the world's smallest Digital SLR. SL stands for "super lightweight," which seems appropriate, given that it tips the scale at just over 14 ounces, yet the camera still accommodates EOS lenses, such as the new EF-S 18-55mm IS STM optic that ships in the box. There's an 18-megapixel APS-C CMOS sensor, DIGIC 5 image processor, a 1.04M-dot fixed touchscreen, a new hybrid autofocus and standard 9-point AF. It offers sensitivity ranging from ISO 100-25,600, can capture 1080p video at 30 or 24 fps, and it includes a built-in mono mic, along with a stereo mic input jack on the side. Jump past the break for our hands-on.

We spent some time with a pre-production SL1, and while we were able to shoot a bit, we weren't permitted to walk away with any sample images. From a performance perspective, the camera seemed quite speedy, with accurate and fast AF both through the viewfinder and in live view mode. There's a typical assortment of buttons and dials, but due to the reduced footprint, Canon had less room to work with -- as a result, things can feel a tiny bit cramped. Despite the size, however, the grip seemed sufficient, and the camera was comfortable to hold. We also had a chance to check out Canon's new Rebel T5i, which, by the company's own admission, is virtually identical to its predecessor, the T4i. The body finish is slightly different and there's now an option for an 18-55mm STM lens kit, but besides a few mode dial tweaks and some even less significant additions, there's really nothing else to speak of here.

As for pricing, the Rebel SL1 will cost you a bit more than many mirrorless models. It's set to retail for $650 (body only), or $800 with the new 18-55mm STM lens. The T5i will run you $750 (body only), $900 with the 18-55mm optic or $1,100 with an 18-135mm lens. T4i owners looking to build out their collection a bit can pick up that 18-55mm lens by itself for $250 -- unless you plan to buy that optic, however, you might as well snag last year's model if you can find it on sale, given that it's due to be discontinued after all of these new EOS products begin shipping in April. Flip through the gallery for some comparison shots with both the T5i and SL1, then take a closer look at that latter model in our hands-on video below.

2011年10月8日星期六

Lenovo IdeaPad K1 review

Welcome to a Laptop Battery specialist
of IBM Laptop Battery First post by: www.laptop-battery-stores.com

Let's do a roll call, shall we? Who doesn't have a Honeycomb tablet to shill in the states? Acer, ASUS, Motorola, Samsung, Sony, and Toshiba all have something to their names, with Dell possibly bringing its China-only Dell Streak 10 Pro here too. Until now, Lenovo was one glaring exception. The company already had a head start selling the LePad tablet in China, but it was only last month that it announced not one, but two Honeycomb slates for the US market: the IdeaPad K1 for mainstream consumers, and the ThinkPad Tablet for business users (and a fair share of geeks, too). Now, we could easily roll our eyes at how saturated the market for Android tablets is becoming, but Lenovo isn't just any old OEM. The brand has won such an avid following that we bet the company could have essentially slapped its name on a plain-Jane black slab and waited for loyal fans to line up.

In fact, though, you're in for a bit more than name recognition. The K1 goes after mainstream consumers with a winsome design, sure, but also a software package designed to make Honeycomb easier to use, and to help ensure that flummoxed, low-tech users don't have to spend too much time downloading apps out of the box. What's more, it ships with Android 3.1 and has a two-cell battery like IBM 08K8199 Battery, IBM 08K8198 Battery, IBM 08K8197 Battery, IBM 92P1075 Battery, IBM ThinkPad R40 Battery, IBM ThinkPad R32 Battery, IBM 02K7054 Battery, IBM ThinkPad A20 Battery, IBM ThinkPad A20M Battery, IBM ThinkPad A21M Battery that promises up to ten hours of battery life. Oh, and the 32GB model rings in $499, undercutting the 32GB iPad 2 and Samsung Galaxy Tab 10.1 by $100. But is that enough for it to stand out? Let's see.

Like so many other Honeycomb tablets, the K1 packs a 1GHz NVIDIA Tegra 2 SoC. Mainstream consumers might look at us cockeyed if we told them the performance could be zippier -- for those folks, the performance should be plenty fast. But more discerning techies will likely notice some lags when minimizing and opening apps. The screen was also often slow to switch orientations as we flipped from landscape mode to portrait and back, and more than once the display was unresponsive, leaving us tapping multiple times before the tablet did what we wanted it to. In general, we tend to say that all Tegra 2 tablets have some obvious performance limitations, but the K1 felt pokier than others we've tested. Indeed, its score of 1,448 in the Quadrant benchmark falls short of the 1,546 and 1,584 that the Thrive and 10.1 notched. And while we try not to put too much stock in benchmarks, we think these numbers are telling, given our anecdotal experience with the device.

Also, not to beat a dead horse, but at some point during our testing, we took a break to play with the 10.1, and immediately breathed a sigh of relief. It's hard to tell how much of that was the 10.1's solid-yet-lighter build, the bright display, or the quick performance, but boy, did we miss it. The 10.1 is markedly faster, and the difference becomes painfully obvious when you play with the two side by side. The 10.1 is quicker to respond to taps and swipes, its screen rotates faster, and it opens and minimizes apps more briskly.

Benchmark	Score
Quadrant	1,448
Linpack	32.77 MFLOPS (single thread) / 61.33 MFLOPS (multi-thread)
Nenamark 1	30.1 fps
Nenamark 2	19.6 fps
Vellamo	945

The K1 has a 2-cell, 7400mAh battery that promises up to ten hours of battery life -- the same claim made by the iPad 2. In our standard Toshiba PA3641U-1BAS Battery rundown test (movie looping, WiFi on), it lasted eight hours and twenty minutes, matching the Motorola Xoom and falling about ten minutes short of the TouchPad. But it doesn't approach the Galaxy Tab 10.1's ten hours nor the iPad 2's ten and a half, which seems like a problem given that the K1 is markedly chunkier. If a tablet's going to be bigger, we want it to make up for it with longer battery life and / or more robust performance. The K1 doesn't quite do that on the longevity front, though it did have a much better showing than the Thrive, which lasted just six and a half hours in the same test.

	Battery Life
Lenovo IdeaPad K1	8:20
Apple iPad 2	10:26
Samsung Galaxy Tab 10.1	9:55
Apple iPad	9:33
HP TouchPad	8:33
Motorola Xoom	8:20
T-Mobile G-Slate	8:18
Archos 101	7:20
RIM BlackBerry PlayBook	7:01
Toshiba Thrive	6:25
Samsung Galaxy Tab	6:09
ASUS EeePad Transformer	Ran a different test

The IdeaPad K1 is cute, (relatively) affordable, and easy to use, and we know it'll be a sensible choice for some shoppers. We're just not sure that's you, our dear, tech-savvy readers. See, the K1 has two big strengths: one, it's aggressively priced, starting at $449 for 16GB (granted, that version's not on sale, so if you buy today, it's going to be the $499 32GB model). The other major thing the K1 has going for it is simplicity. Lenovo's tweaked Android 3.1 so that settings are easier to find and apps are a cinch to kill. It also comes with an array of popular apps (or bloatware, if you're cynical). Factor in the attractive design, and we can recommend this, particularly for people with budget constraints, or those looking to give a techie gift to a not-so-techie person. Those things aside, the K1 is heavier than most tablets, and doesn't justify its heft with additional ports, extraordinary battery life or even zippy performance. If you didn't want ports anyway, and know your way around Honeycomb without Lenovo's help (thank you very much), why not just get something thinner, faster, and longer-lasting? Or, you know, at least stick around and see how Lenovo's geekier ThinkPad Tablet fares.

2011年10月2日星期日

Hewlett Packard Jornada 820

Welcome to a Laptop Battery specialist
of Hp laptop battery First post by: www.laptop-battery-stores.com

It's very rare that you get a piece of kit in for review that makes you re-evaluate what you want from a computer, but the Jornada 820 is one of those beasts.

The first thing to mention here is that the 820 is pushing the limits of what you can actually call a PDA. It's more of a sub-notebook, but then again it runs Windows CE, which is part of the attraction of this device. It brings together the best of both worlds, but more on that later.

The 820 is the top-of-the-range device among the Hewlett Packard (HP) CE PDAs. With dimensions of 246 x 178 x 33mm and weighing in at 1.1kg, it's a lot larger than any of the Windows CE handheld devices on test here, but it is still relatively diminutive when you compare it to a full notebook.

One of the benefits of its larger size is that there is very little compromise when it comes to inputting data. You are presented with an excellent keyboard, that is responsive and has plenty of travel. The good news for those who expect to do a lot of typing is that it is comfortable to use for extended periods. Just below the keyboard you'll find a touch-pad. This is slightly smaller than those you'll find on a notebook, but because the 820's screen isn't as big as that of a laptop, you don't need as much surface area to navigate the screen.

The only problem we found with the keyboard is that it doesn't tilt, so when you're using the device on a flat surface your hands are at an uncomfortable angle. Nevertheless, most people are likely to use the 820 on the move, where you are more likely to be resting the unit on your knees, giving you a better typing angle anyway.

The other advantage of the larger form is that HP can afford to kit out the device with a pretty impressive colour screen. While the CSTN technology used is a little outdated, the screen is bright, displays vibrant colour and offers a very respectable resolution of 640 x 480. The viewing angle, while not amazing, is easily good enough for everyday use. If you're working at a desktop, you can even plug the device into a standard desktop monitor via the VGA port at the rear of the unit.

If you venture round the back of the unit, you'll also find a USB connector nestling next to the VGA port. We tried plugging a Microsoft USB Intellimouse into this and it worked first time without even pausing to load a driver. This was a true demonstration of plug-and-play, but then again there aren't many other USB devices that come with Windows CE drivers. HP says that Y-E Data's Flashbuster-U floppy drive will also work, but we haven't tested this. It's a great shame that you can't make use of the USB connection to transfer files between the 820 and a desktop PC; instead you are stuck with the slower serial option.

To the right of the USB port you'll find the telephone connector for the modem, which is a 56K model. While the modem's performance is not wonderful, it's still a welcome addition. If you feel you can do without the modem, you could always opt for the 820e model.

On the rear you'll also find a 4Mbits/sec IrDA port, which is a nice location for it, as it means you can leave another device communicating with the 820 while you type away at the front of the unit. Other slots and ports can be found on either side of the device. The right-hand side is home to the Compact Flash card slot, the AC port and the serial port, while the opposite side sports the PC Card slot and the battery backup compartment.

The main battery slot is underneath the unit much like a laptop battery such as Hp Pavilion dv9000 battery(Hp dv9000 battery), Hp EV087AA battery, Hp EX942AA battery, Hp Pavilion ZT3000 battery, Hp 337607-001 battery, Hp 337607-003 battery, Hp PB992A battery, Hp PB994A battery, Hp PB991A battery. The only difference is that with the 820 you get a whopping 10 hours of battery life, due to the lack of moving parts and general efficiency of the device.

Synchronising the device to a PC is simply a matter of loading up Windows CE Service 2.2 on the PC and making sure both devices are set to communicate at the same speed. We had no problem transferring contacts and appointments between the device and Outlook 2000.

As far as software is concerned, you get the full Pocket office suite. HP has also included some extra utilities, such as settings applets for the VGA port and the touch-pad. There are also some extras on the CDRom bundled with the device, such as software to allow you to print directly from the 820 and Outside In email attachment viewing software from Inso.

All in all, the Jornada 820 is a joy to use. The keyboard is touch-typing friendly, the screen looks great and the supplied applications take care of all your daily needs. If you were thinking of buying a laptop, but wanted something a bit smaller yet still with a long battery life, the 820 is the machine to go for.

2011年9月26日星期一

Apple MacBook Pro 15 reviewed

Welcome to a Laptop Battery specialist
of Acer Laptop Battery First post by: www.laptop-battery-stores.com

The allure of the MacBook Pro is simple. With power enough to please performance die-hards, and the poise to please fashionistas, Apple's flagship laptop was always destined to impress. But, with previous models still chugging along on Core 2 processors, many will have been holding off for this inevitable Core i7 upgrade.

Performance

The price is still enough to put a lump in anyone's throat, but the outlay rewards with the usual Apple delights. The major news is that the slick aluminium chassis is now joined by some up-to-date internals - but, although it's definitely fast, it isn't quite as fast as you might expect. Intel's Core i7-620M is teamed with 4GB of DDR3 memory, propelling it to a fine 1.75 in our benchmarks, but it's still a whisker behind two other recent i7 converts - Sony's VAIO Z11 on 1.80 and Lenovo's ThinkPad T510 (PC Authority, July 2010) on 1.91. The 5400rpm hard disk shares some of the blame; at this price, a 7200rpm disk would seem more appropriate.

Graphics

More interestingly, in a first for Apple, graphical duties are handled by dual GPUs comprising the on-CPU Intel HD graphics and Nvidia's discrete GeForce GT 330M chipset. The burlier chipset of the pair, the GeForce GT 330M, fired through Crysis at 1280 x 1024 and Medium detail with a borderline-playable average of 26fps. Intel's HD graphics, meanwhile, proved man enough for HD video playback.

The duo works wonders in Apple's OS X Snow Leopard, with Intel's HD graphics taking the reins most of the time and the Nvidia chipset automatically stepping in when more graphical muscle is required. Unfortunately, it's a great trick that you'll only appreciate in OS X. It's painfully absent when running Windows.

Battery Life

Boot Camp works as simply as ever for Windows installation, but the Nvidia chipset takes a serious toll on battery such as apple PowerBook G3 Battery, Apple PowerBook G4 Battery, Apple PowerBook G4 15inch Battery, Apple A1012 Battery, Apple M8511 Battery, Apple M8244 Battery, Apple A1079 Battery, Apple A1078 Battery, Apple A1148 Battery, Apple M6091 Battery life. The Intel HD chip is efficient, and allowed the MacBook Pro 15 to idle for 8hrs 15mins in OS X; by contrast, with the hungrier Nvidia chip permanently engaged, it managed only 3hrs 35mins in Windows. Push the MacBook Pro 15 hard and you'll be dashing to the mains after just 1hr 25mins.

Features

The frugal sprinkling of two USB ports, one FireWire 800 connector, Gigabit Ethernet and an SD card reader proves as limiting as ever, and although the miniature DisplayPort socket accepts a flexible array of adapters - including DisplayPort, HDMI, DVI and D-SUB - the need to shell out for each one is galling.

Screen

Our hope that this, the most expensive MacBook Pro 15, might stretch to a high-definition display was dashed, too. Image quality is superb, with vibrant colours, good contrast and impressive brightness, but the native 1440 x 900 resolution is disappointing. We wouldn't hesitate in upgrading to the HD-capable 1680 x 1050-pixel display for AU$140.

Design

Spending this much, we'd expect unparalleled levels of comfort, but we were a little disappointed. Admittedly, the glass multitouch trackpad is responsive, but the backlit keyboard isn't on the same level. The crisp action makes the short-travel keys palatable, but the chiselled front edge of the laptop dug into our wrists.

If that wasn't enough, the combination of Intel's Core i7 and the MacBook Pro's aluminium construction causes the chassis to reach worrying temperatures. Light usage heated the wristrest enough to leave our palms sweaty, and heavy multitasking had the underside at scorching temperatures.

Conclusion

Familiarity breeds contempt, as the saying goes, and Apple's latest proves a perfect illustration. From afar it's the usual lovely thing, with power and aluminium-framed panache in equal measures. But the specification is stingy, the keyboard mediocre, the lack of graphics switching in Windows is a killer blow, and the cooling system borders on the unworkable. We're long past the days when Apple did style like no other, and have seen too many far better laptops in recent months - such as the VAIO Z11 - to recommend this one.

2011年9月25日星期日

Acer announces four new tablet devices for home and business

Welcome to a Laptop Battery specialist
of Acer Laptop Battery First post by: www.laptop-battery-stores.com

Acer today announced fresh details on its four tablet products for 2011: the Iconia Tab A100, Iconia Tab A500, Iconia Tab W500 and Iconia dual screen touchbook

Four new products will soon be jostling for space in the overcrowded tablet market courtesy of Acer: the Iconia Tab A100, Iconia Tab A500 and Iconia Tab W500 and Iconia dual screen touchbook.

The Acer Iconia Tab A100 is an ultra-portable 7in Android tablet in the mould of Samsung’s first Galaxy Tab. Product highlights include a (1024x600) 16:10 aspect ratio full touch screen, a Nvidia 1GHz Dual Core processor, a rear-facing camera, Adobe Flash Player 10.2 and a solid array of connectivity options; including HDMI.

The Acer Iconia Tab A500 is a 10in tablet boasting a Dual Core Nvidia Tegra 2Wi-Fi CPU for speedier load times and Web browsing. Featuring a 10in capacitive touch screen, HD video playback, an in-built HDMI port, and 3D video support, the Acer Iconia Tab A500 is primarily designed for mobile entertainment.

The Acer Iconia Tab A500 runs on the latest Android operating system; 3.0 Honeycomb. We’ve played around with this OS on the Samsung Galaxy Tab 10.1v and can report that it is very user-friendly.

The Acer Iconia Tab A500 will be available from mid-April from $579.

The Acer Iconia Tab W500 is an intriguing tablet device that consists of a 10.1in display and a detachable keyboard. The screen can be removed from its docking keyboard and carried around like a regular tablet.

According to Acer, the Iconia Tab W500 boasts a battery life of up to 6 hours in-between charges like Acer TravelMate 240 Battery, Acer BTP-52EW Battery, Acer BTP-63D1 Battery, Acer BTP-42C1 Battery, acer BTP-44A3 Battery, Acer BTP-550P Battery, Acer BTP-73E1 Battery, Acer BATCL50L Battery, Acer TravelMate 290 Battery, Acer TravelMate 4000 Battery. Other features include two 1.3MP cameras, Wi-Fi and 3G connectivity and Windows 7 operating system preinstalled.

The Acer Iconia Tab W500 will be available from May for an Australian RRP of $899.

Perhaps the most intriguing product at the launch was Acer's Iconia dual-screen touchbook - a desktop replacement-style laptop that comes with two all-point multi-touch displays in lieu of a traditional keyboard.

Users can use each screen to multi-task in any way they see fit; browsing a website on the top screen while viewing folders and documents on the bottom screen.

The Iconia touch-book is based on the Intel Core i5 family of processors and runs on the Windows 7 platform. You can read our first impressions of the device here.

The Iconia dual screen touchbook will be available in April, for a recommended retail price of $2499.

2011年9月17日星期六

Power Adapter Technology

Welcome to a Ac Adapter specialist
of Apple Ac Adapter First post by: www.laptop-battery-stores.com

Power supplies can be used to convert one form of energy into another. Power supplies may take the form of adapters, a kind of technology that enables current voltage and direction to be modified.

Definition

Power adapter technology rectifies one type of current such as AC (alternating current) voltage input to obtain DC, or direct current voltage output. Rectification is the process of converting AC current, which can reverse direction, into a current that flows in one direction, or direct current (DC). Inverting a current via a power adapter changes DC current to AC current.

Switching-Mode Power Adapter Technology

Alternating current, or AC, contains both positive and negative polarity, which enables it to change current direction.

Switching-mode power adapter technology uses rectification to force both polarities move in one direction to output DC voltage via diodes, or components designed to enable electrical currents to flow in one direction and block current flowing in the opposite direction.

Linear Power Adapter Technology

Linear power adapter technology uses large mains-frequency transformers to convert AC voltage to DC voltage. Transformers send out electrical energy from one current to another via conductor coils. These conductor coils are composed of material that enables the free flow of electrical current.

Power adapters (or power supplies) like Apple iBook G3 14-inch Adapter, Apple M8576 Adapter, Apple MacBook 13-inch Adapter, Apple MacBook Pro 15-inch Adapter, Apple PowerBook 1400 Adapter, Apple M8243 Adapter, Apple M8942 Adapter, Apple A1021 Adapter, Apple A1184 Adapter, Apple A1036 Adapter, Apple iBook G4 14-inch Adapter are a ubiquitous part of our electronics-laden lifestyle.

A power adapter takes the output of one power source, like a 120-volt AC wall socket, and converts it to a different output, for example a 19.5-volt power supply for a laptop computer. Usually these devices work dependably and without worry. But if you find the electronics devices that you have connected to a power adapter are not working properly or that their batteries are not charging, there's always the possibility that the power adapter is not doing its job. With the right tool, however, you can check the output of your power adapter and see if that's the source of the problem.

Examine your power adapter. Every power adapter will have the input voltage and amperage requirements printed on it, as well as the output voltage and amperage rating. We'll be testing the output of the power adapter, so write down the specs. An example would be this, taken from a laptop power adapter: Output - 19.5V....3.34 amps. We'll measure the output of the power adapter with a multimeter -- a very handy tool for anyone working with electronics. A multimeter can measure voltage, current, power output and resistance of electrical circuits by touching the electrical circuits or device with a set of probes. See Additional Resources for a good tutorial on multimeters.

Set your multimeter to the proper range for measuring the output of your power adapter. Take into account the voltage and the amperage you'll be measuring. Consult the manual for specifics on how to set your particular model of multimeter.

Check the data plate of your power adapter to find out which portion of the plug is positive and which is negative. For example, on some power adapter plugs, the outer shell of the plug is positive, while on others it's negative.

Touch the probes of your multimeter to the corresponding portions of the power adapter's plug and note the readout. Compare that with the rated output of the power adapter. If it varies significantly, replace the power adapter.

Dell Inspiron E1405

Welcome to a Laptop Battery specialist
of dell laptop battery First post by: www.laptop-battery-stores.com

Dell has just informed us that the Intel Core 2 Duo T5500(1.6Ghz) processor is in short supply. As such, Dell plans to begin offering the E1405 with a higher Core 2 Duo processor beginning in the last quarter of this year. We anticipate the E1405's performance will improve as a result of this processor upgrade, but battery life might also be impacted.

When I reviewed the Dell Inspiron E1505 last May, I didn't hesitate to give it the Editors' Choice award for offering incredible value at a budget price. The only thing that could've made it better was a lighter chassis and better battery life. Now, there is a "Mini-Me" version of the E1505, the Dell Inspiron E1405 ($1,106 direct; E-Value Code: 9-D81012M). If its size and 8 hours of battery life do not capture your attention, perhaps the new Intel Core 2 Duo processor will. The E1405 will be one of several Inspirons to get the new processor upgrade, and it's priced with frugality in mind. But the performance gains I had expected from the processor upgrade really didn't come to fruition.

If it weren't for the 85Whr (9-cell) battery sticking out from the back, the E1405 would actually be over a pound lighter than the E1505, instead of just 0.8 pounds lighter. Despite the heavier battery such as dell Vostro 1510 battery, dell T112C battery, dell Vostro 1310 battery, dell Vostro 1520 battery, dell Vostro 2510 battery, dell Vostro 1000 battery, dell Vostro 1000 battery, dell T116C battery, dell Y022C battery, dell Latitude E6400 battery, the 5.8 pound system is still easy to tote around. I think the 14-inch widescreen is the perfect size for work and play, and it's one of few 14-inch displays to sport a 1440-by-900 resolution. Most budget systems with a 14-inch screens (and even budget systems with 15.4-inch screens, like the E1505) usually max out at 1280-by-800(WXGA) resolution. As a matter of fact, except for the weight and the screen, the two systems offer the same features, just at different dimensions.

Like its predecessor, the E1405 also has a 1.6-GHz processor. The main difference, of course, is that while the E1505's chip was an Intel Core Duo T2300, the E1405 has the new Core 2 Duo T5500. (Keep in mind that the E1505 will also get the processor upgrade in the future). On the SYSmark 2004 SE Internet Content Creation tests, I saw an 11% performance increase over that of the E1505. Office Productivity tests, surprisingly, were dead even. This tells you that media related tasks will benefit more than office applications will from an upgrade to a system with the T5500 chip. Photoshop tests were nearly neck and neck, so you won't see much of a performance gain there. Even video encoding tests improvements were minimal. In contrast, systems using the higher-clocked Intel Core 2 Duo processors (such as the Dell XPS M1710 with its Intel Core 2 Duo T7600 mobile processor, and Gateway M465-E with its Intel Core 2 Duo T7400 mobile CPU) saw 20% improvements in performance on the tests over the 1.6-GHz Core Duo mobile processor-equipped E1505.

The E1405 uses integrated graphics, which might have some people yearning for the discrete ATI graphics on the E1505. Discrete graphics is simply better for gaming, and spec-wise, it'll be ready for Windows Vista, Microsoft's next-generation operating system. The advantages of going with integrated graphics, you ask? Well, insanely long battery life for one. The 8 hours and 9 minutes that the E1405 achieved in MobileMark 2005 tests is the most impressive battery score to date on all laptops. The 85Whr (8 Cell) battery was a big factor, and low powered components contributed to the system's score. You also end up with a cooler system because of this. Using an infrared thermometer, temperatures barely climbed to 40 degrees Fahrenheit, as opposed to triple digit temperature readings on systems running higher clocked Core 2 Duo processors. Ultimately, battery life makes the E1405 a better traveling companion than the E1505.

More In the end, there are certainly performance gains for the E1405, with its Intel Core 2 Duo mobile processor, over that of the E1505, with its Intel Core Duo mobile CPU, but not as much as I would have hoped. You'll see better gains in systems using higher-clocked mobile Core 2 Duo CPUs. Performance is still top-notch, and if battery life and portability are at the top of your list of priorities, the Dell Inspiron E1405 is a solid notebook for frugal shoppers.

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