moh.vze.com Posted May 14, 2019 Report Share Posted May 14, 2019 I'm about to swap out all my 6 year old XS Power batteries with new ones. However, after topping off my 6yr old XP3000 and leaving it in the garage disconnected, it's actually holding a stable voltage of 13.18V after 24 hours. Does mean the battery is still good? I was thinking about tagging it along with the two new XP3000's and D2400 but I don't want it to slowly kill my new batteries. Is it a bad idea to use old an new batteries together? Quote DC Audio - Singer Alternators - Knukonceptz - XS Power - Hybrid Audio - Rockford Fosgate - Second Skin Audio - SMD - Sundown Audio - Elemental Designs Link to comment Share on other sites More sharing options...
BEEKAY Posted May 14, 2019 Report Share Posted May 14, 2019 Leaving it disconnected doesn't tell much. I'd load test it and see how it performs. Quote Link to comment Share on other sites More sharing options...
Kyblack76 Posted May 14, 2019 Report Share Posted May 14, 2019 Get a 12v fan, or some sort of something you can put a bit of a load on the cell. We had a d7500, that would hold VOLTAGE, but, the second we hooked up a small fan to the posts, the voltage tanked, meaning there was a dead cell in there (or two). If it holds voltage, and can hold a load, who cares how old it is. Run it. But, i would check it before installing it. Good luck. 1 Quote SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
Robin Dobbie Posted May 14, 2019 Report Share Posted May 14, 2019 I don't know if it's relevant for these AGM types of batteries, but you can take lead acid batteries to many auto supply stores and they have a gadget to test them under realistic load. Even walmart can do this. Once, I thought my battery was going out and I happened to be within walking distance of a walmart. I was going to just buy a new battery on the spot, but they tested the old battery and said it was good. They printed a little slip of paper with some specs and tests the battery was capable of passing. I would bet autozone or similar could do the same. Worth calling one of them to find out. Quote Link to comment Share on other sites More sharing options...
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