The manufacturer does not provide AC/DC charging voltage/current ranges. Looking at the specs that are provided; 18 amp-hr battery and 12hr DC charge time/24hr AC charge time, it would appear the maximum AC charging rate is .75 amps and the DC charging rate is 1.5amps. AC voltage would need to be 120V and DC voltage would need to be between 12.5 volts and 13.1 volts.