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Old 05-16-2014, 09:07 AM   #15
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Location: Powell River, B.C.
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Originally Posted by distaff View Post
Skip, one point. I have replaced one bad battery in a bank of 6. The other 5 were still good (not excellent) and I wasn't prepared to toss them all. What it means is that the new battery will only last as long as the other 5, but on a 5 to 1 trade off, that was a fair proposition.
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.

99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 05-17-2014, 11:36 AM   #16
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Originally Posted by Skip426 View Post
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.

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