Battery is a Fromeco Lithium Ion pack 7.4 volts with regulator (2400 mah pack regulated to 5.1 volts). Voltage before the regulator under one amp load is 7.84 volts, 5.1 volts to the ignition according to Cactus Avation this is fine. Thinking of bumping the voltage up to 6 volts at the regulator Cactus Avation says it will take 6 volts ok but no more.