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Old 06-26-2016, 11:21 AM   #1
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Battery charging

Does anyone know how long it would take to refresh the batteries when plugged into a generator?


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Old 06-26-2016, 11:47 AM   #2
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Too many variables. Battery size, charger output, and depth of discharge being the main ones.
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Old 06-26-2016, 12:47 PM   #3
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Quote:
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Too many variables. Battery size, charger output, and depth of discharge being the main ones.
Yep, no way to answer the OP'S question specifically.

But we have two 12v deep cycle batteries.
We can go 3-4 days without recharging the batteries if we keep furnace usage to a minimum.
It takes about 3 hours to recharge them.

NEVER let the batteries go below 50% charge.
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Old 06-26-2016, 05:23 PM   #4
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Ok I will be dry camping for 3 days, using fridge on propane and a few LED lights before bed, that's about it, we just have 1 battery that came with the unit, and the generator is fairly small


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Old 06-26-2016, 07:49 PM   #5
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A single would probably need an hour or so a day depending on your converter output. One of the first things I did was go to a second 12V...and then two 6V when those gave up nearly five years later. Not incredibly expensive and gives you some flexibility.
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Old 06-26-2016, 07:55 PM   #6
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Use the generator to power the RV and let the converter charge the batteries rather than use the 12V DC outlet on the generator even if it says something about being a battery charge outlet.

Quote:
Originally Posted by urocav2001 View Post
Ok I will be dry camping for 3 days, using fridge on propane and a few LED lights before bed, that's about it, we just have 1 battery that came with the unit, and the generator is fairly small


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Old 06-26-2016, 08:00 PM   #7
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Does the fridge use a lot of battery power while running on propane?


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Old 06-26-2016, 08:08 PM   #8
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Very little. Your biggest concerns will be incandescent lighting (LED is much better) and furnace fan.
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Old 06-26-2016, 08:10 PM   #9
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Especially the furnace fan.
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Old 06-26-2016, 08:13 PM   #10
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Not really. But get one of these to monitor when you need to charge:

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Here is a reference chart:

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