aztex Posted May 31, 2020 Report Share Posted May 31, 2020 Hi, I have 2 brand new Deka AGM 79Ah batteries installed in my trailer. The trailer has been store 2.5 months. First month I had been able to get out weekly and leave on a solar panel for a few hours and get 99% charge. In between I unplugged negative cable. Batteries was turned off inside trailer too. 3 weeks ago I brought both home and charged them with a high quality CTEK charger. Both connected I'd charge to 100% leave on trickle for a few days, un plug and monitor voltage daily. When down to 12.4v I'd recharge. This would take 3-4 days. Left the pair on charger the past 4 days and then installed in trailer to turn on fridge (using propane). I went back 4 hours later to confirm fridge cooling down and checked the batteries. Trailer battery volt meter said 11.8 volts! Multimeter 12.4v..... Should a battery set deplete 25% (charts say 12.4v is 75% capacity) in 4 hours? I confirmed the fridge is on propane and that should hardly use any battery power.... I'l know more tomorrow but am leaving town and if the hint of an issue I want to get to the dealer Monday before heading out. Anything about this raise serious concerns? Thanks! Quote Link to comment Share on other sites More sharing options...
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