2010年12月30日星期四

Tester won't give a battery any extra life

Read more about battery tester
Q: I have a 2003 BMW Z4. The battery died twice without warning because of old age. I've been advised to check the battery regularly, especially after one year. I bought a $50 battery tester so I can check it myself every other week. Is this is a good plan in terms of hp pavilion dv4 battery reliability?</p>

A: I admire your willingness to test the battery on a regular basis, but how is testing the battery going to prolong its life? It's not, but it may give you an idea of when the battery is starting to fail.

Battery life is somewhat unpredictable. Most automotive batteries seem to survive three to five years -- nicely in line with their warranties. I don't think a car owner can extend the life of a battery, but I do believe a car owner can shorten a Compaq Presario V2000 Battery

The major factors in battery life seem to be environmental/ambient temperatures, state of charge, level of electrolyte, quality of terminal connections and security of battery mount. Car owners can't keep it from getting cold outside, but they can influence the other factors.

If you absolutely do not want to deal with a dead ACER AS07A31 Laptop Battery, there's a relatively simple answer: Replace the battery every two or three years. Is this potentially wasteful? Yes, but unless you accidentally discharge the battery by leaving the lights on or something similar, the car will always start.

2010年12月27日星期一

How to Save Battery Power

Laptops tend to lose their fascination quickly when you need frequently to look for the nearest power plug to charge up. We all want our laptop batteries to last as much as possible. How do you keep your canon nb-4l battery energy as long as possible? The answer at this question is what the laptop users are looking for the most. For start we’ll try to expose you some elementary things that you should know about the laptop battery:

1). there are different types of batteries: universal, rechargeable, external;
2). there are different chemical substances used in Canon NB-5L Battery:
 Lithium Ion, NiCad, Ni Mh.

How do you keep your energy much time as possible? Here are some tips&tricks that might help you: – Use the original charger;
– You must make your hard drive as efficient as possible. For that you need to defrag your hard constantly. But be careful, don’t do that while your acer laptop battery is on;
– Charge the Olympus LI-50B battery after is automatically powers off, the full charge the battery; – It is important in saving some extra Apple Laptop Battery power such as Asus Battery to dim as much as you can your laptop screen;
– When you don’t use the USB devices, even your mouse, remove them. It will help you to save your battery power also;
– If you want your battery to last more, you must clean your sony laptop battery’s metal contacts, monthly. You can use for that a moistened alcohol duster. If you do that the power from your battery such as dell Inspiron 6000 battery will be transferred efficiently;
– If you use your laptop as a desktop PC, remove the battery. At least, don’t let it in for long time. Remove the Pentax K-7 battery, not before you make sure that it is charged half from its capacity and store it in a safe place (normal room temperature). But pay attention, you must reinstall your every month and use your laptop till full discharge. Why you need to do that? Because if you let your hp laptop battery in the laptop while you are using an electrical plug for a long period of time, this will keep thebattery in permanently charging state and that diminish the life of the battery;
– Rather use hibernate mode than the standby mode, even if in standby mode you save some of your battery power and also you can continue the work on your laptop from where you left it. But the most useful way for you to save your battery power is the hibernating mode. The advantage of this mode is that your laptop is shut down and the your laptop state is saved;
– Another way to save your battery power is using a lower graphics. If you want to do that, you have to change the screen resolution.
Read more about How to Save Battery Power

Battery Memory Effect

The word 'memory' was originally derived from 'cyclic memory'; meaning that a nickel-cadmium battery could remember how much energy was drawn on preceding discharges. On a longer than scheduled discharge, the voltage would rapidly drop and the batterywould lose power. Improvements in battery technology have virtually eliminated this phenomenon. Canon NB-4L Charger for Canon NB-4L Battery.

The problem with nickel-cadmium is not so much the cyclic memory but the effects of crystalline formation. The active cadmium material is present in finely divided crystals. In a good cell, these crystals remain small, obtaining maximum surface area. With memory, Sony NP-BG1 Charger for Sony NP-BG1 Battery, the crystals grow and conceal the active material from the electrolyte. In advanced stages, the sharp edges of the crystals penetrate the separator, causing high self-discharge or electrical short.

When introduced in the early 1990s, nickel-metal-hydride was promoted as being memory-free. Today, we know that this chemistry is also affected but to a lesser degree than nickel-cadmium. The nickel plate, a metal that is shared by both chemistries, is partly to blame. Olympus LI-50B Charger for Olympus LI-50B Battery. While nickel-metal-hydride has only the nickel plate to worry about, nickel-cadmium also includes the memory-prone cadmium plate. This is a non-scientific explanation why nickel-cadmium is affected more than nickel-metal-hydride.

The stages of crystalline formation of a nickel-cadmium cell are illustrated in Figure 1. Canon BP-511 Charger for Canon BP-511 Battery.The enlargements show the cadmium plate in a proper functioning crystal structure, crystalline formation after use (or abuse) and restoration.

How to restore and prolong nickel-based batteries
Crystalline formation is most pronounced if a nickel-based battery is left in the charger for days such as laptop battery, or if repeatedly recharged without a periodic full discharge. Since most applications do not use all energy before recharge, a periodic discharge to 1 volt per cell (known as exercise) is essential to prevent memory.
Read more about Battery Memory Effect

Why has my laptop battery life suddenly deteriorated

The maximum life was 1.5 hours and suddenly has dropped to a maximum capacity of 20 minutes? I have had the ACER AS07A31 Battery for about a year, do laptop batteries like that deteriorate with time?

Yes, the cells die over time. Unfortunately batteries aren’t covered under extended warranty.

And if you do not plug your computer in while you are are on it almost every time, you could loose battery life. If you do plug your computer in almost every time, cells do die so you should strongly consider to buy a new battery

There is a simple answer to your problem. The Dell Inspiron 2200 Battery for the unit is likely damaged or simply over-used. You will have to purchase a new battery in order for the laptop to work without being constantly plugged in. Normally I would have suggested to check the Power Settings but 10 minutes seems too short even for the most non-energy efficient machines out there.

Even the maximum life of 1.5 hours seems a bit short. Anyway, the battery juice is probably worn out.

Here are some tips to conserve dell battery power in the future:
1. Once a battery is fully charged, you should not leave the charger plugged in.

2. Most chargers and batteries have a 500-time charge and discharge limit and then they start getting weak. So it is best not to keep on plugging the charger in and out.

3. It is best to charge the battery only when it reaches less than 40% of battery power. Charging the battery when it is half full will make the battery weaker.

4. Some also recommend the following: only charge the battery when the laptop is turned off or on standby. When you are able to use the charger, then use the charger without the battery in the laptop. If you can’t use the charger, then use the battery.

5. If not using the battery for a long time, then store it in a cool place, i.e., the refrigerator, using a ziplock bag.

Read more about laptop battery life deteriorated.

2010年12月20日星期一

AA Battery Roundup 2010, Now With More Apple Batteries

Last year I posted a roundup of alkaline AA batteries and showed how they compared with each other in terms of battery life. The testing methodology I used last year, although only slightly complex, was very easy to implement. By turning on three identical flashlights, I drained two AA HP Pavilion dv6 Battery from each of the three brands while recording the whole process with a Webcam.

I then went back to the recorded video and pinpointed the time each flashlight died. Wash, rinse, and repeat two more times and there were my results. Like I said, easy.

Easy, but perhaps not as satisfying as I'd hoped. A few users, thoughtful enough to comment, suggested some alternative tests. One of which was to use a point-and-shoot camera, set it to record video, and drain the batteries. Then check the video length of the recorded video to yield the Dell Inspiron 1525 Battery life duration. So simple! This would even be easier and simpler than the flashlight tests. One huge problem with that method, which we'll get to later.

First, I contacted the folks at Canon, and they were more than willing to participate in my mad schemes. They sent their PowerShot SX30 IS camera. I had grand plans of inserting the batteries, hitting the record button, and coming back an hour or two later to find results, a golden egg, and possibly other imaginary treats. Here's where that aforementioned problem cropped up.

As many of you no doubt know, small digital cameras like this don't record video for more than 10 minutes before automatically shutting off. A dilemma for sure, and I'd love to regale you with a triumphant tale of how I immediately came up with an elegant solution. A win-win, not only for my time, but my sanity as well.

No. I guess I'm just not that creative. Instead, I rolled up the proverbial sleeves and took the pragmatic approach. I set a timer on my iPhone to 9 minutes and started it at the same time that I pressed record on the camera. After 9 minutes, my phone alarm would go off, reminding me to stop recording and almost immediately start recording again (usually within about 2 seconds). I then made note of the exact time I stopped recording and carried on ad nauseam.

And by "ad nauseam," I mean up to three times for each brand, using a different pair of batteries each time. Sure, I now have a Pavlovian response to hearing my phone's alarm where I raise it above my head in preparation to smash it to the ground into (hopefully) a billion pieces, but it worked.

So that's the methodology. It's not nearly perfect, but it addresses some of the concerns from last year, in particular using a high-drain device and rechargeable batteries (such as laptop batteries). My hope is that the results will give you at least some idea as to the potential life of the batteries featured.

Also, please note that although we used Duracell recharged batteries, we didn't test whether any of the brands discharged while sitting around. Hopefully next time we can actually plan for that.

Read more about AA battery roundup 2010

2010年12月19日星期日

Versatile Battery Compartment Enclosures

OKW's extensive 'SHELL-TYPE' range of plastic enclosures offers an unrivalled selection of sizes, styles and battery compartments.

These modern and robust enclosures have been designed to house many different types of small electronic devices including test and measurement, medical and wellness, TOSHIBA PA3534U-1BAS Battery, peripherals, interfaces and switching equipment etc.

The 'SHELL-TYPE' enclosures are molded in off-white ABS (UL 94 HB). Three different types are offered: Type V with a single front panel aperture, Type O with two front panel apertures and Type G which is closed with no front panel apertures.

With four standard plan sizes and six standard heights a huge range of models is offered with external dimensions ranging from 3.346" x 1.771" x 0.866" to 7.480" x 1.496" x 3.582". Highq quality HP Pavilion dv6000 Battery for hp pavilion dv6000 laptop.

In addition to this, the enclosures are offered with battery compartments which will accept four battery cell combinations: 2 or 4 x 1.5V AA and 1 or 2 x 9V cells. The Dell Latitude D820 Battery compartments have a clip-on external access lid.

New for 2011, the 'SHELL-TYPE' cases can be fitted with nickel plated steel spring battery contacts which conform to DIN EN 60601 and are designed to avoid short circuits if the batteries are inserted incorrectly.

All models are provided with internal screw bosses and guide grooves for fitting the PCBs and electronic components. Accessory anodized aluminum, or red PVC, front panels are offered for the models with front panel apertures.

The closed Type G models feature a recessed top molding for fitting a membrane keypad or product label, and will also accept a gasket for sealing up to IP65.

Other accessories include tilt feet, wall brackets and holders, pocket/belt clips, rubber non-slip feet and EMC contact strips. Case prices start at $13.

OKW can supply the 'SHELL-TYPE' cases with additional holes for the push-buttons, connectors and displays, plus silk-screen printed legends and logos, and RFI/EMI shielding.

2010年12月12日星期日

Laptop distractions

They're sleek, slim, sophisticated and lifesavers with multimedia capabilities that are sometimes distracting. While taking courses this semester, Weber State University students see more laptop computers in use than at any previous time. "I never used to see students using laptops, Dewalt Batteries for dewalt power tools, " said Ben Johns, a sophomore at WSU. "I'm definitely seeing it more now than in my previous schooling."

With an endless amount of entertainment only a mouse click away and accessible from nearly anywhere on campus, thanks to the wireless service on campus that gives students free access to the Internet, some students may find such activities distracting them from paying attention in their classes.Sony laptop batteries for sony laptops. Some distracted students have even found ways around professors' watchful gazes. "It takes a lot of guts to play Warcraft while the teacher's talking," Johns said. Such distractions are more affordable than ever, too. According to ZDNet.com, laptop sales now often surpass sales of desktops. Decreases in the cost of laptop manufacturing and laptops' sizes, increases in laptops' performance and longer battery life have all helped facilitate this increase in laptop use, even among dirt-broke college students. Now, instead of only using a desktop when at home or in one of the computer labs, some WSU students have the ability to tote their laptops next to their textbooks. "Laptops have a portability factor, and that's one reason I love them," said Jeff Nicholson, a sophomore at WSU.

"Students with laptops don't want to sit around in the computer lab." In addition to the portability, laptops facilitate the learning process for many students. "I think it's a good idea," Johns said. "It's a whole heck of a lot easier to take notes." Laptop computers allow students to perform many tasks in addition to homework, sony camcorder batteries for sony camcorders, and some of those tasks might offer distractions. Thanks to the improved portability of laptops, students can easily communicate with each other just about anywhere through instant messaging services. In addition, now that laptop computers can often match their desktop counterparts in terms of raw power, they allow students to download and listen to music, watch movies and play games. These activities make up a small portion of the vast number and variety of media and communication-related tasks computers can perform.

"I think it's a good investment," Johns said. "There's no distraction. It can become a problem, but most professors can handle them. If it works for you, then great." Laptops may sometimes provide a convenient guise for students that allows them to appear as if they are busy taking notes while in class. "I've seen a few other people using laptops in class,canon camera batteries for canon cameras, and they're probably chatting," Nicholson said. "However, I can multitask. I can be listening and chatting at the same time. Most people can probably do the same." Computer science students use laptops for many of their classes, so they may have an even easier time getting sidetracked from their studies. "Since most computer science students are heavily involved with computers, it is common to see the students have computers in class," said Drew Weidman, WSU computer science instructor, in an e-mail interview.

"I really haven't questioned what the students are doing with the computers. For all I know they could be working on a programming assignment for another class." Nicholson said he had not seen too many laptops in his introductory computer science course.Nokia batteries longer battery life for nokia mobile phones. Despite their inherent abilities to make students' lives easier and more entertaining, both inside and outside the classroom, some students may still find their cost a challenge. "Everything in the computer world is more affordable, even laptops," Nicholson said. "They're still quite a bit up there, though."

2010年12月9日星期四

HP Mini Edition 210 HD Review

The HD Edition HP Mini 210 netbook is a new technology that works with Pine Trail, which runs on 1.66 GHz and GMA 3150. Is only 10.1 "with an LED screen LCD HD BrightView Infinity.Dell D5318 Battery for dell laptop. Sonoma is available in red, blue Pacific, Crystal Solid Silver and Black. Although this is only a few weeks, he is seeking the very promising and many people and their controls. To help save buyers online, HP Mini 210 HD editing and couponsavailable.

Buyers can add the Broadcom Crystal Enhanced HD Video Accelerator to improve the quality of the screen. The base of the hard drive is 160 GB, and consumers can upgrade for more if they wish. This netbook also comes with Wireless-G, a webcam, 3 cell DEWALT DC9091 Battery, 3 USB ports, 1GB of RAM expandable to 2 GB and island-style keyboard. This device is Energy Star, which means that only works in a small amount of energy, while providing a highperformance.

Consumers have a choice of Windows XP, Vista or 7. Since everyone has their own preferences in Windows, it is good to know that HP offers more than one operating system option. The HP Mini 210 HD Edition has everything you need for wireless Internet access, including options for Bluetooth, users can connect anywhere in the world at any time!

This netbook is designed to satisfy business users and students. He has enterprise applications, videoconferencing, and many softwarefor any user. There are also multimedia features for those who want to have fun with this portable unit. JVC bn vf707u battery for jvc camcorder. The integrated 5-in-1 card reader compatible with a variety of digital media applications. Users can talk on a webcam, transfer and sharing photos, listening to the radio, create playlists, and so on.

The only problem that some users seem to have with this netbook, according to comments Edition HP Mini HD 210, the keyboard layout. Some think that the style of the islandtoo small and others believe that the differences between the keys are too big. OLYMPUS LI-42B Battery for olympus digital cameras. Apart from these problems, most users seem happy with the high definition edition 210.

Many people who enjoy high-VGA port, allowing them to connect the laptop to a larger monitor or HDTV when used at home. QuickSync integrated software is also greater, allowing users to synchronize files, MOTOROLA BX50 Battery for motorola mobile phones, photos, documents and videos from computers within the same network! In general, the HP Mini 210 HDEdition is an affordable, netbooks good as many types of consumers can appreciate.

2010年12月2日星期四

HP Envy 14 Full Review

 
 
Pros
Powerful CPU and graphics
Beautiful design

Cons
No matte screen option
Could use a larger hp laptop battery

Bottom Line
The design of the Envy 14 seems clearly inspired by the MacBook Pro, which is a good thing. This is a powerful, attractive laptop at a reasonable price.

This  Palm Treo 680 Batteryuse japanese battery cell for palm.  
The HP Envy 14 starts at $999 in its base configuration, with a Core i3-370M CPU at 2.4 GHz, 4GB
of RAM, and a 320GB hard drive. My test model came upgraded to a Core i5-450M, also a dual-core CPU with hyperthreading at 2.4GHz, but supporting Intel's Turbo Boost technology. It also has a 500GB hard drive and HP's Radiance display, a $200 option that gives you a higher-resolution screen (1600 by 900) and better brightness, contrast, and color. This boost the cost of our test model to $1289. All Envy 14 models have a slot-loading 8X DVD-RW drive and ATI's Mobility Radeon HD 5650 graphics card. To save battery life, you can switch graphics between the Radeon card and Intel's integrated high-def video chip. High quality
MAKITA 192681-5 Battery fit for makita power tools.

Display
Display size                              14.5 inches
Maximum resolution                 1600 x 900
Processor

Processor class                         Intel Core i5
Processor model                       450M
Processor speed                       2400 MHz
Graphics

Graphics Type                          Switchable
Integrated Graphics Chipset      Intel
Integrated Graphics Chipset Model Number    HD
Discreet Graphics Chipset        ATI Radeon
Discreet Graphics Chipset   Model Number    HD 5650
Graphics Memory                   1024 MB

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Memory
Installed memory                     4 GB
Maximum memory                  8 GB
Memory technology                DDR3
Storage

Hard Drive Type                    Hard Disk Drive
Total HD Size                        500 GB
Hard Drive Speed                 7200 RPM
Number of hard drives included    1
Other Storage    
    SD/MMC Card     SDHC Card
Optical Drives
Optical Drive Loading Type        Slot
Networking

Ethernet Type                 10/100/1000 Mbps
Wifi Type                  802.11 n/a/b/g
Interface                     Connections
Number of USB 2 Ports            3
Video Interfaces  
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Dimensions

Weight (min)                              5.3 pounds
Weight (with accessories)          6.4 lbs
Width                                       14 inches
Depth                                       9.4 inches
Height                                      1.3 inches
Software

Operating system                     Microsoft Windows 7 Home Premium
Included Software                   Adobe Reader 9; CyberLink DVD Suite; Corel PaintShop Photo Pro X3 \& VideoStudio Pro X3;              Roxio CinemaNow;
Other Features
Built-In Speakers                   Stereo
Docking Station Port               No
Devices  
     Built-In Microphone     Built-In Webcam Carrying Case/Cover
Energy Star compliant            Yes
Input devices  
   Keyboard     Touchpad