Bank These Batteries? UPDATE
Updated 28 April (Changed topic so starting new thread) Now I need an opinion/facts if I can bank this big one with my two smaller AGMs even though they have different "cycle use" charging specs...
Forum Discussion
Got the 10 hr test started. Maybe a problem already? I disconnected the three batteries yesterday after they were on their Floats, but this morning they still had a bit of surface charge it seems, so their voltages were not the same when I banked them to do the test. I had the 6G disconnected a little earlier than the other two.
6G - 13.16, Stark 1- 13.26, Stark 2- 13.22 by multi-meter. Banked it was 13.2 on Trimetric before 22.5a load applied. (at which it dropped to 12.6 "loaded")
Hope that won't matter for the final voltages after the 24 hr rest at 50%. Expect early individual 50% voltages this evening and finals Sunday evening.
A day sitting at 50% before recharging is not going to kill them. (If it does, they deserve to die!)
Another sign of ? is that when in parallel and on their recharges from the last trip and then on Float, the two Starks were at different temperatures. 22C vs 25C, eg, with Stark 2 the higher. Kept the 3C diff at different temps.
EDIT- battery temp is 15C both Starks at near 75% SOC. At 15C capacity is 95% of rated. 427 so my target is 214AH down. So my 22.5a is a bit high for the 20hr rate for that of 21.3 so must reduce to that or a bit lower to average out.
6G - 13.16, Stark 1- 13.26, Stark 2- 13.22 by multi-meter. Banked it was 13.2 on Trimetric before 22.5a load applied. (at which it dropped to 12.6 "loaded")
Hope that won't matter for the final voltages after the 24 hr rest at 50%. Expect early individual 50% voltages this evening and finals Sunday evening.
A day sitting at 50% before recharging is not going to kill them. (If it does, they deserve to die!)
Another sign of ? is that when in parallel and on their recharges from the last trip and then on Float, the two Starks were at different temperatures. 22C vs 25C, eg, with Stark 2 the higher. Kept the 3C diff at different temps.
EDIT- battery temp is 15C both Starks at near 75% SOC. At 15C capacity is 95% of rated. 427 so my target is 214AH down. So my 22.5a is a bit high for the 20hr rate for that of 21.3 so must reduce to that or a bit lower to average out.
