986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Car won't hold a charge

eightsandaces · 11-15-2010, 10:48 AM

8-12 oz is a boatload of water to add to a battery, when the battery is charged with the lead plate sandwiches out of solution it can ruin the plate, even when the solution is eventually restored to the proper level. I'm betting the battery is bad but if you're still not convinced see if it holds a full charge with it's posts disconnected from any draw.

11-15-2010, 10:48 AM	#2
eightsandaces Registered User Join Date: Feb 2009 Location: Buffalo NY Posts: 828	8-12 oz is a boatload of water to add to a battery, when the battery is charged with the lead plate sandwiches out of solution it can ruin the plate, even when the solution is eventually restored to the proper level. I'm betting the battery is bad but if you're still not convinced see if it holds a full charge with it's posts disconnected from any draw. Last edited by eightsandaces; 11-15-2010 at 10:50 AM.