[buzzinhalfdozen]

Ed, yes with EFI engine this can really be a problem.I can only comment on the set up I have but most "modern" chargers are automatic, I regularly leave mine on between races, no need to monitor it as it will go into a "floating" charge rate. Most of the local racers I know either run an alt. or have an old home use charger they use, most are not automatic in nature and can destroy a battery if left unattended. Mostly I guess it comes down to choice, I needed new batteries and decided to move up to 16 volt, and have no regrets of that decision. Do I think 16 volt is better....yes ignition, water pump, fans, fuel pump all receive more voltage....can't be a bad thing.