Posted 1/22/2026 06:58 (#11520087 - in reply to #11519597) Subject: RE: Optima battery leak
Denmark
Do not know in your case but an Optima in my JD 4240 once had a loud whistle from its pressure relief valve when I quit for the day. Turned out the charge regulator had gone haywire thus keeping up maximum charge. Had the alternator fixed and nothing else. Battery worked for years after that.
Optima battery leak
