So here is the thing, and I can't figure this out.
Been off grid for 20 months, have a bank of 8 6v us batt xc2200's. I am awaiting stock at the local distributed to add another bank of 8 . But I have a weird issue that exists and on two other solar system I have tested. Same batteries.
When the bank is on charge at absorb, a mutilmeter test revealed that each battery is actually at a diff voltage. Can vary by a lot, some at 7,1 others at 7,4 and some really high like 7,7. I don't have the reading with me I took down but you get the idea. They vary by a lot.
Now you would assume that they would all be pretty much the same baring very small differences, They should all be around 7,35 -7,4 - but not so.
I have checked the voltage at the mppt output and it's dead on at 59,2 so what gives, the batts are all the same age, and even when moving them around to diff positions in the string, there is no change.
anyone have any input here?
Been off grid for 20 months, have a bank of 8 6v us batt xc2200's. I am awaiting stock at the local distributed to add another bank of 8 . But I have a weird issue that exists and on two other solar system I have tested. Same batteries.
When the bank is on charge at absorb, a mutilmeter test revealed that each battery is actually at a diff voltage. Can vary by a lot, some at 7,1 others at 7,4 and some really high like 7,7. I don't have the reading with me I took down but you get the idea. They vary by a lot.
Now you would assume that they would all be pretty much the same baring very small differences, They should all be around 7,35 -7,4 - but not so.
I have checked the voltage at the mppt output and it's dead on at 59,2 so what gives, the batts are all the same age, and even when moving them around to diff positions in the string, there is no change.
anyone have any input here?
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