New to me car had a GoLitithium pair of batteries and the old style charger from them. One irritating thing is that the charger doesn't seem to have a float mode. Once it hits fully charged, it will read that forever regardless of charge.

Do their higher dollar chargers have a float mode?

I have an alternator on it and really don't need much charging for the race day. Mostly I use the charger for maintenance.

I believe that Go Lithium advises not to leave the charger on their batteries once they are fully charged.