BOL High Performance NiMh Smart Charger Designed for NiCd / NiMh battery packs Charges NiMh batteries Input Voltage: AC 100v ~ 200v Battery Voltage Range: 4.8v - 9.6v Charging Current: 0.5A - 4.0A Build in auto switching power supply with input 100-240V AC Zero delta voltage detection cutoff Integrated MOSFET control Pulsation charge method to prevent overcharge/overheat Reverse polarity protection 13A fused input protection Charge battery packs with combination 4-8 cells 3 LED indicator for slow charge, fast charge and power Cooling fan Not for charging lipoly battery packs