4x Panasonic Eneloop Pro AA Rechargeable Batteries

Ni-MH batteries Capacity: max. 2550mAh, min.2450mAh Pre-charged using solar power No memory effect: can be recharged when fully, or partially discharged rechargeable batteries Maintains up to 85% of the initial charge up to 1 year (when not in use) Recharge up to 500 times