Universal Fast and Smart Charger is designed forcharging any48V NiMH and NiCd Battery Packs. (40 Cells pack)120-240V AC input for worldwide use.The charger can cut-off power Automatically by negative delta V IC whenbattery packis fully charged.Protection fuse for over current, short circuit & reverse polarity protection.Charging time can be estimated as the followCharging time ( Hrs ) = 1.2xBattery capacity ( mAh) / Charging current (2A ) One standard Tamiya male connector installed with the charger.bare leads for your customized connectorsIt is a very smart charger, just plug it in and wait for the battery to charge.The charger is designed for fast charging any 36V-48V Nicd and NiMH battery packs. made of 30 to 40 NIMH or NICD cellsTECHNICAL SPEICIFCATIONS Input100-240V, 50/60 Hz, 1.5A MaxOutput48V, 1ADimension50mmH X 83mmW X 170mmL.Light Weight1.45LB.LED Display- Red LightCharging- Green LightCharging complete and Trickle Charging