Tenergy 3A Charger for 36V NiMH/NiCD Battery Pack (30 Cells in series) Battery capacity extend: 2.4Ah ~ 30Ah Number of cells: 30 NiMH/NiCD cells in series Charge current: 3A  0.2A Rated AC input: 100~240VAC 50/60Hz Max. input power: 197W