I am currently operating my C5 with 2 3 cell lipo packs in parallel .This seems to reduce voltage drop under load but still results in an operating voltage of around 11v.As the consol leds are not connected, can I use packs rated at 21v where the voltage drop reduces this to around 19v? Or I could go for packs that give out around 14v under load.This is on a standard C5. I take it the aural warning is for low voltage and comes in at around 11v with cutout shortly after? I am not bothered about battery protections etc as I have my own instrumentation for monitoring the lipos. All and any opinions on this appreciated,thanks.