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Old 04-14-2018, 08:28 PM   #19
gmc
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Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
Posts: 1,873
THOR #2829
Quote:
Originally Posted by Thehobe1 View Post
A large, group 27 deep cycle battery has typically 100AH capacity. A brand new, in spec group 27 battery would provide 100AH/3.2A= 31.25 Hours of refrigeration if that was the ONLY load for this type of refrigerator. 2 batteries would provide 62.5/24 or 2.6 days of power again, if this were the only load on the 12V batteries AND they are brand new. ...
... and you don't want them to last long... Otherwise figure your calculations on using 50% of the available capacity on regular basis. Occasional deeper discharge may be tolerated, but a steady diet to zero will dramatically shorten the life.

Reality the 2 battery solution would be just over a days use - and that still assumes it is the only load which also isn't likely reality.
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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