USBCELL AA Rechargeable batteries – work just like normal rechargeable batteries, but simply pop off the lid to recharge by any powered USB Port. Ideal for use with wireless mice, keyboards, games controllers, household products – in over 2 billion free USB ports. No need to carry or find a separate charger. Easy recharge on the go, in the office or at home. USBCELLs can be charged hundreds of times, saving you money, and helping reduce environmental waste. USBCELLs are NiMH batteries, 1.2v 1300mah capacity. Product information, support and recycling advice available at usbcell.com/support.