How much current do the charging batteries draw?
The power supply, located at the base of the control shaft, delivers up to 600 mah to each battery pack. The full charge portion uses about 120 watts On slow/float charge, it uses pulses of power that vary between about 10W and 20W. Trickle charging cycles between 8W and 13W every second or so, sometimes faster. The full charge portion of the cycle uses half a kilowatt of electricity.