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Old 03-07-2017, 17:00   #1
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Charging On The Hard

My boat is on the hard in Florida for hurricane season. I left the battery switch in the "all" position. I'm now having second thoughts if this was the correct thing to do. The boat is new to me, and so is the use of solar power. The solar system is made up of 4 panels, each at 105 amps. The previous owner said it will keep the batts charged; but I've read elsewhere people shut the system off. thanks in advance.
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Old 03-07-2017, 17:17   #2
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Re: Charging On The Hard

I think you mean 105 watts. It should be okay so long as you have good solar charge controllers. If the batteries are flooded lead acid then they will need topping up with de-ionized water from time to time.
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Old 03-07-2017, 17:18   #3
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Re: Charging On The Hard

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I think you mean 105 watts. It should be okay so long as you have good solar charge controllers. If the batteries are flooded lead acid then they will need topping up with de-ionized water from time to time.
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Old 03-07-2017, 18:39   #4
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Re: Charging On The Hard

As long as it's a quality controller and both banks have similar charge profiles.

Float should be set at the lower end of the range, maybe 13.2V.

Check on them at least once a month.
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Old 04-07-2017, 04:49   #5
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Re: Charging On The Hard

Ideally you'd like the chargers to be able to do their thing with the battery switches off, but every boat is different so there is no universal 'correct' answer. Keeping bilge pumps alive is good (even on the hard) because rain water can get in and overfill the bilge.
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Old 05-07-2017, 05:24   #6
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Re: Charging On The Hard

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If the batteries are flooded lead acid then they will need topping up with de-ionized water from time to time.
Don't you mean distilled water?
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Old 05-07-2017, 06:08   #7
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Re: Charging On The Hard

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Don't you mean distilled water?
I would think so and a lot easier to obtain. 84 cents/gal at walmart. University of Illinois Physics Department states distilled water is "purer" than de-ionized water. Go figure! I have been using distilled water in my FLA batteries for decades. They fail right on schedule usually around a month after the warranty expires.
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Old 05-07-2017, 06:19   #8
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Re: Charging On The Hard

If you're serious then something is wrong
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