Is 24v Charging the Same as 12v Charging?

MEXICOWANDERER wrote:
Go down the line BFL and check the voltage across each positive and negative. 12-volts same as always. Charge amperage acceptance is the same too. Chech the voltage differential in each series pair. Unequal voltage equals problems - fix it so each battery in series reads the same. Check this while charging then again at rest

My two "12s" are actually four 6s. The two "12s" in series look an awful lot like four 6s in series now that I draw a picture of it!

My pairs of 6s have always had slightly different voltages for each 6, which I thought was trivial. Not trivial? Four in series each a tiny bit different in voltage makes a "bad 24"? How bad is bad? They are all at full baseline SG after four years in an ugly series- parallel with uneven links etc.

I figure with my drawing of the string of four 6s:

The charging wires stay at each end of the string on same posts whether 24 or 12.

To swap back and forth between 24 and 12, I just need to remove the neg parallel link's end from Batt #3 and shift the pos link's end from Batt #4 to the neg on Batt #3. That link would be longer than the other two links.

If it matters I could have another link the same length as the other series links dangling from the pos post of Batt #2 ready to go for when in 24 mode. The longer link would be then be dangling until in 12 mode.

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On 24 vs 12 "capacity"-- Thanks. I was thinking something like that where a 100AH capacity bank at 12v is a 50AH capacity bank at 24v.
Their "20 hour rates" would be 5 amps for the 12v and 2.5 amps for the 24v but they would each still do the 20 hours. (To get down to 10.5v for the 12 and down to 21v for the 24) The 50% SOC voltages would be 12.1 for the 12 and 24.2 for the 24 with Trojan Wet 6s.