Hi - So I got the 2 lipo's I need for my boat - 3000HV 2S 7.4V times 2 and charger Hyperion duo with power supply (Wheww - Mega $$) - What is a good lipo cutoff or Lipo Shield for those batteries. Steve Hanson - See my other post Re Fast EBay Boat I just got - "Will this boat work" to see pix. Thanks.