Panasonic
eneloop NiMH rechargeable batteries AA Mignon 1,900 mAh, 1.2V, 4-pack

Immediately ready for use: Panasonic eneloop rechargeable batteries come to you pre-charged with solar energy and are ready to use immediately - you don't need to charge them before using them for the first time.

Low energy loss: Thanks to their low self-discharge, the batteries are always ready for use and always provide the energy you need when you need it. If the batteries are not used, they still have 70% of their initial charge even after 10 years.