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Pastimes : Car Nut Corner: All About Cars -- Ignore unavailable to you. Want to Upgrade?

To: gg cox who wrote (1882)	11/29/2007 9:27:00 PM
From: SI Bob	Read Replies (1) \| Respond to of 5716

Which brings up a related question. The house batteries in my RV are decent deep-cycle ones. Because of a wiring fault, they've been drained down to as low as 7.7 volts, so when it was in for a lot of repairs, I asked that the batteries be replaced with much larger ones and I be given new value as trade-in credit on the existing ones, because I felt their life had been shortened by the relatively deep discharge. The repair shop told me that the deep discharge didn't do them any harm. They're meant to take it, hence the name "deep cycle". He got me there. I'd always thought that deep discharging of deep-cycle batteries was hard on them. But what he said sure made sense. Was I wrong or was he?