cgallamore Posted October 3, 2011 Share Posted October 3, 2011 2007 ch 613If it sets 2 days or 2 weeks, volts will be down to 11.4 voltsNew batteries jan,2011 bulldog brand Quote http://www.bigmacktrucks.com/uploads/1272400769/gallery_4852_794_314995.jpg Link to comment https://www.bigmacktrucks.com/topic/20861-battery-drain/ Share on other sites More sharing options...
cgallamore Posted October 3, 2011 Author Share Posted October 3, 2011 It will hold 11.4 Volts But will not startHave cleaned cables, if I put a charger on it, get volts up around 13 it starts. Quote http://www.bigmacktrucks.com/uploads/1272400769/gallery_4852_794_314995.jpg Link to comment https://www.bigmacktrucks.com/topic/20861-battery-drain/#findComment-87488 Share on other sites More sharing options...
Rob Posted October 3, 2011 Share Posted October 3, 2011 It will hold 11.4 VoltsBut will not startHave cleaned cables, if I put a charger on it, get volts up around 13 it starts.Hi Chuck, I would take the batteries to a battery center and have them tested first. Have you tried disconnecting them from the truck with a full charge and letting them set a couple of days, then retesting? This can be an indication of an internal short or sulfation of the plates causing self discharge. Have you noticed the batteries being warmer than they should be? This is another cause to self discharge. I'd pull them and get to a battery store with a carbon pile to test them under a strong load to evaluate integrity.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/20861-battery-drain/#findComment-87492 Share on other sites More sharing options...
shortstack Posted October 3, 2011 Share Posted October 3, 2011 I'm with Rob on this one. I've had mine do the same thing (sounds like) but checking them out individually with a load on, 1 or 2 would drop down to around 5 volts. I'm not sure but suspected maybe they were shorted out. Replaced all of them and everything worked fine. Trey Quote Link to comment https://www.bigmacktrucks.com/topic/20861-battery-drain/#findComment-87494 Share on other sites More sharing options...
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