I hate battery operated devices that don't have rechargeable batteries. I tried getting by with devices which took AA batteries by using rechargeable AA batteries, but it was a pain since they have about 1/4 the life span of non-rechargeable batteries plus you need to keep the recharger handy.
So, when I heard about the USB Cell on a Podcast, I had to get it. It's a simple rechargeable AA battery which can be recharged by plugging it into a USB port. Brilliant!
I keep one battery in my wireless mouse and the other battery is plugged into one of my computer's USB hubs. Low battery warning from the mouse? ...no problem, just swap the batteries.
After using this handy device for several months I'm sold on it. (I no affiliation with this company other than being a satisfied customer.)
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