Originally Posted by Skip426
If the 5 batteries were a known age I might try the same ( 2 years maybe)
But I have seen people try this and then be back for the rest of the batteries within a month.
It was a year ago, and the other batteries were 3 years old at the time. Still getting good performance. If it had been 4 to 2 instead of 5 to 1 I might have replaced them all, but I also got a good price on the replacement (still under warranty so I paid half).
I am surprised that the individual batteries showed such significant differences in voltage, I've not seen that on my bank. There must be some resistance on the connections. I see a small voltage drop from the battery bank to the far end of the coach, but six inches shouldn't make a difference.