This fully automatic 16.8 volt 3 amp charger is suitable for Powakaddy FW 3, 5 & 7 Range of golf trolleys 16.8v Lithium Li ION batteries. This charger is programmed with 3 steps of automatic loading: Ip-Im-Um. Stage "Ip" is a pre-charge function for deep-discharged battery packs - This is useful for battery life! When the battery is recovered by the current small pre-charge load, the "Im" stage will provide a bulk current load (up to 50 W). Then, the step "Um" is followed, the output voltage is limited to CV until the charging current has fallen to 0.1 DC value. At this point, the battery is fully charged and the charger turns off automatically. The entire process is indicated by an LED display. Complete instructions and mains cord supplied. Supplied with Plug 'n' Play ™ - Adapter Main characteristics: 16.8v charger with intelligent microprocessor technology Input Voltage 100-240Vac 50-60Hz Bulk Load Current 2 Amps Battery capacity 4-33Ah Suitable for Powakaddy Lithium Batteries Integrated reverse polarity protection Size 120mm x 67mm x 41mm Weight 270 g AC power cord included CE Certified