I’m a big fan of high capacity batteries. Sure, they add a little size and weight to your mobile device, but for me it’s worth it if you gain the ability to run all day on a single charge. I’ve been picking up batteries for PDAs that are nearly as large as the mobile devices themselves for years. And if I have a choice between a 3 or 6 cell battery for a netbook, I’m always goign to choose the 6 cell option.
But what if you have a number of different laptops and don’t want to spring for the high capacity batteries for all of them? The Universal External Laptop Battery from LaptopBatteryExpress is a single battery with many adapters. The 66.6WHr, 6600mAh battery comes with power tips that let you use it with laptops from Acer, Asus, Compaq, Dell, Fujitsu, Gateway, HP, IBM, Lenovo, Panasonic, Samsung, Sharp, Sony, and Toshiba.
Of course, some of those companies have more than one power adapter size, so I can’t say for certain whether it will work with netbooks from each of those companies. But at $149.90, the universal battery should supply up to 4 hours of extra run time for a standard laptop, and if your netbook is supported, I wouldn’t be surprised to see it provide 6 hours or more. On the down side, since the adapter doesn’t actually fit into the back of your laptop, it’s one more thing you’ll need to lug around with you.