I have dual batteries on my police Tahoe, and they kept going low on voltage turning over slow.. Turns out the Optima yellow top had gone bad, and it was sucking down the good battery with it. I just disconnected it and now it starts fine off the single normal battery. Actually figured out it was bad after looking at it with my infrared camera while charging. The good battery was still cool, and one dark color. I think I can use the new battery out my 4100 that's in storage for the winter, and I won't really need dual batteries in the summer.
Last edited by 4100 Fire Truck; 11/12/20181:01 AM.
