Battery Self Discharge
Would the rate at which a battery self discharges be a way of determining the health of a battery? I have (2) 7 year old Sam's Club GC batteries that have been sitting without charge(battery disconnec...
Forum Discussion
Mena,
Actually, it did occur to me yesterday that I should do a check with my clamp meter. I'm not sure how small a draw it could detect with any accuracy, though. It's display likes to jump around a lot, and I find myself constantly hitting the reset button. It's a Uni-T 40/600a. I'll give it a try sometime over the next few days, though. Thanks for reminding me.
I'll double check all the connections while I'm at it, too, but I haven't moved the rig since connecting things back up in series/parallel, which was not that long ago. And I'll check the inverter's ground while I'm at it. If that doesn't show any significant difference after a couple weeks, I'll even try disconnecting the inverter, etc., and see if that makes any difference.
Oh, and this past Sunday, when I was putting a top charge on the bank, I immediately noticed one battery taking .03 volts more than the others. This continued throughout the entire charge. All 4 were charging and dischargng equally until recently. It was one of the two 6v's I EQ'd back in the fall, so maybe it's going all girly-man on me? I have noticed I cannot get all things to agree, either. If the SG's are equal, voltages are slightly off, and vice versa. I've settled on equal voltages over equal SG's.
Actually, it did occur to me yesterday that I should do a check with my clamp meter. I'm not sure how small a draw it could detect with any accuracy, though. It's display likes to jump around a lot, and I find myself constantly hitting the reset button. It's a Uni-T 40/600a. I'll give it a try sometime over the next few days, though. Thanks for reminding me.
I'll double check all the connections while I'm at it, too, but I haven't moved the rig since connecting things back up in series/parallel, which was not that long ago. And I'll check the inverter's ground while I'm at it. If that doesn't show any significant difference after a couple weeks, I'll even try disconnecting the inverter, etc., and see if that makes any difference.
Oh, and this past Sunday, when I was putting a top charge on the bank, I immediately noticed one battery taking .03 volts more than the others. This continued throughout the entire charge. All 4 were charging and dischargng equally until recently. It was one of the two 6v's I EQ'd back in the fall, so maybe it's going all girly-man on me? I have noticed I cannot get all things to agree, either. If the SG's are equal, voltages are slightly off, and vice versa. I've settled on equal voltages over equal SG's.
