The 800mAh 4.8V square NiMH battery is part of Overlander's Panasonic Eneloop AAA 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 90% after one year of storage and up to 70% over a five year span, it's no wonder why these packs remain a firm favourite amongst users. The shelf life of Eneloop batteries is amazing; there really is no need to worry about a cycle charge with this collection. Supporting up to 2100 cycles, these Panasonic Eneloop 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.