Too many Kubotas
Veteran Member
Interestingly enough, when taking the 24 V solar charger off this afternoon I checked the voltages on all four batteries. The two "dead" ones (with desufation) had about a 1/10 V higher voltage than the two good ones. Still not good specific gravity, though.A battery balancer is a good idea.
For all of my chargers, there has been no need to take the batteries apart in order to charge them individually: I can just connect each one up to a different battery while all of the batteries are still connected to the vehicle. (I suppose it's possible to have a charger where this could be a problem, but I have not yet run into a modern charger that exhibits this problem.)
a 24V charger will not restore balance to two 12V batteries connected in series. If they are out of balance, they will generally remain so when charging with a 24V charger: you will continue to have one battery in the series string undercharged and the other overcharged.
Somehow I've never heard of a battery balancer before, despite having had many vehicles with multiple batteries. Currently it's 10 of them, plus three trailers, so maybe I should look into getting some of those.
Also, took the little NOCO off of the (formerly) good battery and put it on a smaller size AGM battery, about 25 years old and dead for the past 10 or so.
It did begin to charge it, and this NOCO is definitely high voltage pulses instead of the high frequency I'm used to. It jumped between 8 and change and 18+.