Keep essential electronics powered with these Eco Cell USB Cell CA-9910PK4-S AA batteries, which offer a convenient USB-rechargeable design. The low-drain batteries offer minimal self discharge and overload protection to ensure a reliable charge.
I've been waiting 20 years for this product and it's finally here. It's so easy to charge with the built in USB adaptor, has a charged indicator light built into the battery, holds a great charge and is reusable. Brilliant execution and an overdue solution to disposable alkalines.
Power your electronics with these Eco Cell USB Cell CA-9911PK4-S AAA batteries, which deliver 1.5V of power with minimal self discharge and overload protection for dependability. The USB-rechargeable design makes refueling simple.
I love this product and have been waiting for years for a good rechargeable lithium ion battery to replace AAA and AA alkalines. The AA of this product works great, but the AAA is slightly longer than a standard AAA and won't fit in the battery compartment of my headlamps and a toy I tried it in. Just shorten it up a smudge and it gets 5 stars. Easy to charge. Love the built in USB adaptor. Brilliant but a little too long.