RIM has been keeping pretty quiet about how long their upcoming tablet’s battery life is, but now some leaked screenshots of the tablet’s “Battery Assistant” app are shedding some light on the issue. If these pictures are the real deal, then we won’t have to worry about the tablet’s battery life. It is amazing.

They show the tablet at 50% battery life and the indicator says that it can last another 8.5 hours of web surfing. If 50% is 8.5 hours, then that means that the tablet will be able to surf the web for 17 hours on a full charge.

It looks like the HTC Thunderbolt’s delays might be due to battery life issues. Verizon’s 4G phone is reportedly suffering from battery life that is so poor, it can drain out in two to three hours. Firmware was said to be to blame according to Engadget’s sources and there may be a fix coming in software.

Verizon has reportedly had to delay the Thunderbolt’s official launch date six times, which explains the multiple release dates that have surfaced. Hopefully they get things sorted out quickly and get the phone out.

Lately RIM has been saying that its PlayBook slate would have “comparable” battery life to the iPad, but now it is going one better. The company’s senior business marketing VP Jeff McDowell has promised that the PlayBook will offer “equal or greater” battery life than Apple’s device, while using a smaller cell size. It’s an impressive boast.

If they can deliver what they claim, then the iPad needs to pay attention. Many people consider the battery to be one of the iPad’s greatest strengths. They have until that March launch to turn this claim into a reality.

If you buy the 3DS you might want to consider a wall charger as well. Nintendo has unveiled figures for the 3DS’ battery life, and compared with its predecessors, it doesn’t look good. The official numbers are three to five hours per game, or five to eight hours if playing an older DS title. It takes up to three hours 30 minutes to fully recharge.

The DS gave us 10 to 14 hours, DS Lite 15 to 19 hours, DSi 9 to 14 hours, and DSi XL 13 to 17 hours. It’s safe to say you won’t be having any all-nighters playing a 3D Mario game on this thing unless you are plugged in.

You had better think twice if you want to install flash on your MacBook Air. Arstechnica ran some battery life tests on Apples new MacBook Air and they have discovered that by installing Adobe Flash onto the system the battery life of a full charge can be reduced by as much as 33 percent.

This was originally discovered by accident on a MacBook with Flash installed websites loaded in Safari where Flash-based ads kept the CPU running far more than seemed necessary. Making the battery life last just 4 hours with Flash installed.

With the release of the Notion Ink Adam Tablet coming closer, founder Rohan Shravan has announced that the battery life on the Notion Ink Adam Tablet will be a minimum of 15 hours +. That’s pretty impressive. There’s even a possibility of up to 20 hours with the 24Wh user replaceable battery.

These are figures for the $498 transflective version, not the $399 LCD model that will use more juice. The most power hogging elements on the Adam are the LCD, Wi-Fi, 3G, and Speakers.

It’s no surprise really. Adding all of that extra power under the hood, providing a glasses-free 3D display on top, a wireless “tag mode,” and automatic wireless updates to the 3DS all add up to less battery life. Satoru Iwata himself says “it is inevitable that Nintendo 3DS will be a device which requires more frequent recharging than Nintendo DS” and that is the main reason that a charging cradle will be bundled into the new console’s retail package.

Iwata suggests that users deposit the 3DS into its cradle as soon as they get home. You will be charging this device a lot.

There’s a whole industry built around extending your iPhone 4s battery life, since it isn’t replaceable like the Galaxy S. Here’s the latest device to get your iPhone all juiced up, the latest case with an extended battery pack.

The Mili PowerSpring 4 ships today for £54.99 (or $85 on Amazon). The company claims that it’s the world’s thinnest iPhone 4 battery pack to double your battery life thanks to a 1600mAh capacity Li-Pol battery.

Want to extend the battery life of your Android phone? Would you switch your display to night-vision mode to do so? Probably. Especially if it could reduce the power consumption by half.

Android engineer Jeff Sharkey has discovered a hack that lets you power each specific color channel (red, green, and blue) found in an AMOLED display. Organic LED displays have separate pixel elements for each color channel so powering only one color can save a lot of power.

Well, now this is an impressive claim. The Philips Xenium X312 will have a month of battery life, according to this render’s front screen. Some other specs to leak out include a QVGA display, Bluetooth, FM radio, 2 megapixel camera, and a microSD memory card slot. It’s probably only 2G, which helps get that amazing battery life.

With that kind of battery life you would never miss a call, ever. Sadly, chances are we won’t be seeing this one in North America, and it will stay around Asia and Russia.

Eighteen hours is a long time. I’m on my laptop at least that long everyday, though I have to be plugged in. That power cord is like a leash, my friends and we are but chained dogs. Fujitsu wants to set us free with the new ProGREEN line.

The 14-inch Lifebook E780 has an 18-hour battery life. Yes 18 hours! There’s also the 15.6-inch Lifebook S710. Both are Energy Star 5.0 certified, with LED backlit screens.

You can expect the keyboard and mouse of Logitech’s Wireless Desktop MK710 to get three years of battery life according to the company. We can only assume they used some sort of black magic, by sacrificing a microsoft keyboard to their gods.

It’s designed to “cradle” your fingertips, which should be comfortable. The sculpted mouse has “hyper-fast” scrolling, and it’s all wireless. Europe will be getting the MK710 later this month, the US in April. It will cost you $100.

Well, this one came from out of nowhere. We haven’t heard much from ASUS in the e-reader market, but according to Times Online’s InGear it’s building a 6-inch color OLED e-reader, which is currently dubbed the DR-570.

The device will play Flash video, has both WiFi and 3G, and if you believe it can last for 122 hours on a single charge under “real world conditions.” Which makes it sound like even they don’t quite believe it. The device should be released by the end of the year.

Amazon has announced a hardware update that will up the Kindle’s battery life by 85%. That’s roughly about 7 days instead of 4. The battery life for sleep mode is unchanged. And you should know that the first Kindle won’t benefit from the power management update.

Users have also been waiting for PDF support for the Kindle and Kindle 2. Now you can copy PDF files via USB and use them. You can also convert PDFs to the Kindle format when sending an email. This PDF support is basic: it’s not easy to zoom, create bookmarks and the PDF files can’t be indexed for search.

Today Apple announced new MacBook Pro models with the same upgraded, 7-hour battery life as the 17-inch MacBook Pro, more memory, a processor upgrade, and storage, as well as an SD-card slot. They are shipping today.

According to Apple, the battery will last 5 years or 1,000 recharges since it’s non-removable. The base model features a 3.06 GHz Dual Core Intel processor, 4GB of memory, a 250GB 5400rpm HDD, and an upgraded display at $1,699. That’s $300 less than the current model. If you want to upgrade to a 2.66GHz processor with a 320GB hard drive, that’ll cost you $1,999, while the 2.8GHz model with a 500GB hard drive will hit at $2,299.