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Old 11-08-2014, 06:56 AM   #11
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Originally Posted by Obrieri View Post
I updated from 2 - 12 v to 2- 6 v GC batteries but we dry camp mostly so the addition of a 123 watt solar system completed system. I never see the battery charge go below 50 percent. More than satisfied. I live in Newfoundland & the 2 - 6 volt batteries cost about $100-125 more than 2 brand name 12 v's
I use my Honda EU 2000 only for microwave, toaster, hair dryer. LED bulbs are next on the list for upgrades.
I thought about switching to 6vs but I think I'll just carry a spare 12v battery in my truck and just keep it maintained. I bring my voltage tester and test them daily. What will 50% of a 12v battery read on my meter? 12.06?


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Old 11-08-2014, 10:04 AM   #12
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I thought about switching to 6vs but I think I'll just carry a spare 12v battery in my truck and just keep it maintained. I bring my voltage tester and test them daily. What will 50% of a 12v battery read on my meter? 12.06?


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Measuring the remaining capacity in a battery bank cannot be done with any useful degree of accuracy using voltage readings. Battery manufactures recommend you let the battery achieve equilibrium by resting 24 hours before observing the voltage. Resting means zero charges in and zero charges out. There are those people who claim waiting 4 hours is enough. Either way is impractical to a boondocker. Then there is the matter of battery temperatures. Higher temperature raises the open-circuit voltage, a lower temperature lowers it, throwing another curve into the game.

Coulomb counting is only practical method to determine your bat bank status.
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Old 11-08-2014, 12:05 PM   #13
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Wow , what an education on batteries. Thanks for sharing


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Old 11-08-2014, 08:50 PM   #14
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I thought about switching to 6vs but I think I'll just carry a spare 12v battery in my truck and just keep it maintained. I bring my voltage tester and test them daily. What will 50% of a 12v battery read on my meter? 12.06?


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Yep, when the battery final result is a 12V configuration the standard numbers apply. 12.65V is 100%, 12.06V is 50%, etc.

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