Hitachi 326263 EBM315 3.6-Volt Lithium-Ion 1.5 Ah Battery This battery is a 3.6-volt Lithium-Ion 1.5 Ah Battery 3 Times as many charge cycles as Nickel Cadium batteries 25-Percent more run time per charge that Nickel-Cadium batteries Charges in 30-minutes Comes with a 2-year limited warranty 3.0-Amp/Hr and 40-Percent less weight 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 Weighs less than pound Overcharge and over discharge protection to increase the life of the battery