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Old 04-13-2009, 05:06 PM   #21
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RE: Shore Power Charging - turn it OFF?

Chuck:
Thanks, that's what I thought. 3rd batt just to beef up the house bank. The Newmar seems to run continously, I can hear or think I hear, one of the batts boiling or bubbling. Just did not sound right. With the timer on every 8 hours (about 4.5 hours daily), the batts stay at about 13 volts. This all started when the Rule bilge pump stayed on and ran down both batts, was not hooked up to shore power at the time. Here's another little puzzle: when I've been away from the boat and then come back several days later, my carbon monoxide moniter beeps like crazy when the boat is closed up and the batts have been charging.
Mike
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Old 04-13-2009, 05:36 PM   #22
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RE: Shore Power Charging - turn it OFF?

Mike, The CO detector is going off because the batteries are overcharging. So your timer is working as a temporary fix but not good for the batteries. It may be time for a new smart charger. They are not that expensive and cheaper than replacing batteries too early. Chuck
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Old 04-13-2009, 06:32 PM   #23
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RE: Shore Power Charging - turn it OFF?

The Xantrex True Charger is a great charger! Sounds to me like you need a new one....or you can buy new batteries ever 12-18 months.
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Old 04-13-2009, 08:16 PM   #24
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RE: Shore Power Charging - turn it OFF?

We also have a little charger/inverter that's on 24/7, and we are getting great battery life. Having little need for 110, we chose the Freedom 10, and love it.
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Old 04-13-2009, 08:55 PM   #25
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RE: Shore Power Charging - turn it OFF?

My boat had a ferro-resonant charger when I bought it. The PO had also set it up on a lamp timer, which worked OK for awhile.

I revamped the entire system with a new Newmar smart charger, AGM batteries (two banks of 6V's wired in series) and alternator. It has been an "install and forget" system for the last 7 years or so.

I also keep a battery desulphator going 24/7. It stays on one bank for 4-5 months, then gets switched to the other bank. No special schedule, just when I think to change it.
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Old 04-13-2009, 09:03 PM   #26
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RE: Shore Power Charging - turn it OFF?

I personally like the Newmar chargers a lot and also those made by Victron. I am not a big Xantrex fan, the new equipment coming from them have been very problematic. Chuck
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