Plenty of companies make third party batteries for netbooks from Acer, Asus, Dell, and other computer makers. But the U20 universal notebook battery is something different. It’s not made to work with a particular netbook – it’s designed to work with all of them.

The U20 battery is a 13200mAh external power supply that should provide 10 hours or more of battery life with most netbooks. It weighs less than a pound and measure 7.1″ x 3.3″ x .9″.

The battery normally costs £79.99 from Ultimate Netbook. But Ultimate Netbook has agreed to give away one universal battery to a Liliputing reader as part of our birthday bash. Just fill out the entry form after the break to sign up for your chance to win. This contest will end on April 8th, but don’t worry. We’ve got plenty of other goodies to give away over the next 30 days.

Not-so-fine print: This contest is open to readers across the globe. Any local laws or restrictions regarding prizes apply. If you’re a close personal friend or family member of Brad Linder, you’re not eligible to win so please don’t bother entering. If you’ve won another prize from Liliputing within the past 60 days, you’re also disqualified.

Please enter a valid email address, as I will use this to contact the winner. If the winner doesn’t respond within 24 hours, a new winner will be randomly selected.