mountainman Posts: 125Registered Users ✭✭
edited July 20 in Caravan, Recreational Vehicle, and Marine Power Systems #1
I have a couple questions about voltage drop. I have My vabs at 14.8 but at the battery I see 14.4 checked at cc connector screws 14.8. I only see a v drop with higher amps like in bulk or absorb. In float at 13.2 very low amps battery posts and cc give the same reading. 7 feet from battery to cc on 4 awg copper. Could it be a bad cable?? Next problem came home at the end of the day and checked my sg. 1st batt 1.280 2nd 1.265. Voltage at battery post 12.72. Came in turned on gas hwh .8 amp gas valve. I then checked Mt 50 12.2 volts?? Went back out checked at battery posts 12.2. So I cut the hwh off. back to 12.7 volts. Thinking the hwh was shorted I turned on various other loads and the same voltage drop 12.2 with a 3 amp or a 10 amp load. I checked all connections. Then turned on every thing in the rv. After about 15 mins voltage dropped from 12.2 to 12.1. Within 2 mins after turning everything off. Back to 12.7. Batterys are only 5 months old.
Blue ridge mts. Renogy 400 watts manual tracking . Epever mppt 30. 2 GC 208 ahr. 300 watt psw inverter. 2 kw genny. Iota 45.