The 2500mAh 6V flat NiMH battery is part of Overlander's Panasonic Eneloop Pro AA range. Eneloop cells are the top choice for high capacity and high drain rechargeable Nickel Metal Hydride battery applications. With an exceptional retention rate of up to 85% after one year of storage, it's no wonder why these packs remain a firm favourite amongst users. The shelf life of Eneloop Pro batteries is amazing; there really is no need to worry about a cycle charge with this collection. Supporting up to 500 cycles, these Panasonic Eneloop Pro batteries are sure to withstand the test of time! They are fully operational in temperatures as low as -20℃ and have absolutely no memory effect! Everything you need, these batteries are sure to cater for.