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Focalprice has the USB Rechargeable AA Batteries for $4.89 - 6% off with coupon code MAY6OFF = $4.60 with free shipping. Includes 2 batteries. Features intelligent charger and can be charged from any USB port.
eBay has 2 AA 3000mAh NiMH Batteries w/ USB Charger for $3.89 shipped
These look awesome.
Do they actually work?
How many times can you recharge them?
Must be a trickle charge since it's USB, which means it will take hours to recharge.
They'll charge quickly enough, the problem with these is they're low capacity for AA size since 1/3 of the space is taken up by the usb plug.
500mAH capacity, meaning they "could" charge in a little over an hour but probably take at least 3, and that you're losing more than 1/3rd capacity compared to standard AA NiMH, but in certain uses they could make sense like if you're traveling light but need a laptop and mouse but don't want to take a separate charger for AA cells. Then again, these days there are mice very miserly on power and it could take hundreds of hours of use before your mouse needs a battery swap or recharge with alkaline or LSD (Eneloop, etc) cells in it.