Start Guard, MFG# NS-12-20, Start Guard 12 VDC/20 Amp, Input Voltage: 13.8 - 14.8 VDC nominal, 15.5 VDC max, Output: 20 amps max, Battery: 12 VDC, sealed rechargeable, 5- 7 year life (typical) 5 amp-hour capacity.
