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Old 05-04-2018, 05:11 PM   #1
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Coach battery replacement suggestions

Anyone have good advise on coach battery replacements? Would like them to last at a minimum of 10 hours if possible without recharging.
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Old 05-04-2018, 05:19 PM   #2
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Can't answer your questions unless you can tell us what load is on your batteries for the 10 hours.
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Old 05-04-2018, 05:43 PM   #3
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Full size Frigidaire
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Old 05-04-2018, 05:48 PM   #4
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Old 05-04-2018, 11:57 PM   #5
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Originally Posted by vanderwerff View Post
That is not enough info since it isn't on 100% of the time. Also, what else is consuming power and how much.

You need to do a complete energy audit to come up with what battery capacity you need.
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Old 05-05-2018, 03:43 PM   #6
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Old 05-05-2018, 03:46 PM   #7
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I just want the fridge to be powered only. if we are out in desert riding. I Would like fridge to last over night... or while we are not at camp.
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Old 05-05-2018, 05:52 PM   #8
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I just want the fridge to be powered only. if we are out in desert riding. I Would like fridge to last over night... or while we are not at camp.
Plug in the camper to a kill-o-watt meter and see how much it uses. You can do this in your driveway. Until you know how much power it uses over a 24hr period, you will be guessing on how much battery you need.
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Old 05-05-2018, 06:10 PM   #9
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To do this correctly, you need to measure the power used during a 24hr period as mentioned. Just as a rough example if the fridge runs 25% of the time it would require 340AHR worth of battery to run the fridge for 8hrs. This is a rough number and assumes nothing else is running on the battery. To avoid a costly mistake, suggest you do some measurements prior to making a decision.
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Old 05-05-2018, 06:15 PM   #10
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Making a couple of assumptions and a SWAG, using a 1000 watt inverter, when that baby is running it will pull about 80 amps of 12 volts. At even a 25 % duty cycle that would be 200 amphours and maybe 300 plus at a 40% duty cycle. So, just the frig alone would need between 400 and 600 amp-hours at a 50% SOC if you manage to full charge during the day.

Maybe someone here has one of these frigs or similar and will actually know.
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