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.

Looking for a PMP with a long battery life? You might want to check out the Sonix7 Media Pro. The PMP features a 3.2-inch touchscreen display with an impressive 20-hours of video playback on just one charge. But that isn’t the only trick it does.

The player also boasts a camera, MP4, AVI and Xvid support, plus is an eBook reader. The 8GB and 16GB models will cost you £89.99($136) and £104.99($159).

The Aspire Timeline notebooks manage to get 8-10 hours of battery life and they start at just $699. It accomplishes this through Intel’s ultra-low voltage processors, LED-backlit screens and dual graphics cards. Apparently you’ll get 8 hours with a regular hard drive, and 10 with an SSD.

The charger helps keep the power consumption down by cutting the power when it senses a full charge. The notebook is a tad over an inch thick, by 13.3, 14 and 15.6 inches at 3.5-5.3 pounds.

You want a PMP that can go the distance. I hear ya. Charging is for suckers. Why can’t they give you a PMP that has a battery with some real endurance? Looks like Samsung is doing just that. They’ve introduced a newcomer that promises 50 hours of audio playback on a single charge. Yeah, that’s what I’m talking about.

The device features a 2.4-inch QVGA display, built-in microphone, FM radio module, 8GB / 16GB of flash storage and not much else. It will play nice with MP3, WMA, OGG, FLAC, WMV and MPEG-4. Sadly, no WiFi and Bluetooth.