RE: AMT ECU Battery for Pegasus
What version ECU do you have? I don't think they early ECU's will like Lipo Power. Not to mention... there is no guard in them, keeping them from over discharging the Lipo. And... as above... if you use more voltage... the pump, starter, and glow voltages will be off, and need to be re-adjusted. (for a V2 ecu)
Just throwing in my 2 cents.