Hitachi 326241 EBM1830 18-Volt Lithium-Ion 3.0 Ah HXP Battery 18-Volt lithium-ion battery provides 3-amp/hr and weighs 40-percent less than Ni-Cad or NiMH batteries 3 times as many charge cycles as Ni-Cad batteries; 25-percent more run time per charge that Ni-Cad batteries Can be used with Hitachi Ni-Cad and NiMH tools Overcharge and over discharge protection to increase the life of the battery 2-year warranty 18-Volt lithium-ion battery provides 3-amp/hr and weighs 40-percent less than Ni-Cad or NiMH batteries Can be used with Hitachi Ni-Cad and NiMH tools Overcharge and over discharge protection to increase the life of the battery 2-year warranty