Worx WA3525 20V PowerShare 2.0 Ah Replacement Battery Powerful 2.0 Ah battery charges quickly and runs any WORX 20V tool Share batteries and save money, with the WORX 20V PowerShare Platform Extended run time over our 1.5 Ah 20V MaxLithium Battery (WA3520) MaxLithium technology means more efficiency and no memory effect, degredation over the years Can be charged by WORX WA3732, WA3731, WA3742, or WA3847 (Quick Charger) Interchangeable with part number 50024065