This pack of eneloop Pro AA Rechargeable Ni-MH Batteries from Panasonic comes with a charger, and the batteries are pre-charged and ready-to-use. They are not subject to any memory effect so you can charge them up to 500 times whether they are fully or partially drained. They maintain 85% of their charge after one year, and remain functional down to -4°F.
Specs
Specs