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Old 07-01-2018, 01:44 PM   #1
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Best way to maintain 4D house battery. Help please

Hello all! This may be a dumb question but here goes. I have a 2003 7.3, 4x4 EB 50 SMB.

What is the best way to maintain my 4D house battery.

If I keep it plugged in all the time, without the charger switched on, does this do anything for the battery?
Should I leave it plugged in all the time with the charger enabled? If I do this this, in the winter it gets too cold and faults, in the summer too hot and faults.

I have had my SMB 6 years and have never really know the proper way to maintain the battery.

Thanks in advance for your help!

Fernando
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Old 07-01-2018, 02:52 PM   #2
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During the winter and off-season times how long is it in between the use of your SMB?
I'm thinking possibly take the battery inside to your garage and put it on a proper charger.
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Old 07-01-2018, 03:49 PM   #3
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Depends on the battery type. With AGM's basically you should keep them fully charged as much as possible and try to control the cycling. Keep the DOD above 50% or about 12.2v. I rely on the solar to keep em topped off. If I leave the fridge on during the night while at home, I always plug in so it doesn't cycle the batteries. I avoid high amp charging (unless they need it) and use the maintenance level charge option my inverter has. You can always use a separate maintenance charger. Check out this file:
https://www.nationallibertyalliance....atery%20Qs.pdf
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Old 07-01-2018, 06:20 PM   #4
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IMO...solar is the best way if your van is parked outside...


.....and DaveB made another good point..many Inverter/chargers have switches to limit charge current...pretty sure the tripplite RV ones do...just switch in to 25A of whatever minimum current is if you happen to have one of those.
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