Astron VS70M Adjustable 70 Amp Voltage Amp Meters 57 Amps - 13.8 VDC. 34 Amps - 10 VDC. 16 Amps - 5 VDC. 70 Amps - 13.8 VDC (ICS) 50% Duty Cycle (5 min. on 5 min.off). Solid State Electronically Regulated.