Mixing Batteries on Float-- Mex Test Update 2
UPDATE 1 on 23 Dec post UPDATE 2 on 25 Dec post ---------- Mex is driving me crazy! He said do not mix my used 12s (Scrubber batteries, he calls them--humph! They are respectable golf car batte...
Forum Discussion
Today they seem to have stopped dropping in voltage so quickly.
was 12.72/12.66, then 12.66/12.61, today 12.63/12.59
Should be an initial drop from losing surface charge, then a slow drop from self-discharge. I wonder if these numbers mean my resting voltage at full charge is more like 12.60 instead of 12.73.
Trojan says 90% is 12.58v
Now I know that "evil interactions" is between cells in the same battery and I don't have that, so Mex's test has been very helpful in giving me the picture here what I can do. I think it is safe to bank them all while camping like I want to do, and keep them separated at home like I do anyway.
I can have the one bank for solar to worry about instead of two, plus get some Peukert going, plus the Trimetric can monitor the whole thing instead of just part of it. When going home from the seasonal off grid site as we do anyway fairly often, I can take two of the six batts on rotation for their 100%, leaving four as the working bank in the trailer, and those four can be two 12s and two 6s at times. No need to do all that complicated split bank solar equalizing.
was 12.72/12.66, then 12.66/12.61, today 12.63/12.59
Should be an initial drop from losing surface charge, then a slow drop from self-discharge. I wonder if these numbers mean my resting voltage at full charge is more like 12.60 instead of 12.73.
Trojan says 90% is 12.58v
Now I know that "evil interactions" is between cells in the same battery and I don't have that, so Mex's test has been very helpful in giving me the picture here what I can do. I think it is safe to bank them all while camping like I want to do, and keep them separated at home like I do anyway.
I can have the one bank for solar to worry about instead of two, plus get some Peukert going, plus the Trimetric can monitor the whole thing instead of just part of it. When going home from the seasonal off grid site as we do anyway fairly often, I can take two of the six batts on rotation for their 100%, leaving four as the working bank in the trailer, and those four can be two 12s and two 6s at times. No need to do all that complicated split bank solar equalizing.
