Panasonic BK-4HCCA8BA eneloop Rechargeable XX Batteries (AAA; 8 pk) Rechargeable up to 500x; Precharged & ready to use; Retains 85% of its charge for 1 year when not in use; No memory effect; Can be charged when partially drained; Functions down to -4deg F; AAA; 950mAh ; 8 pk;