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03-06-2015, 08:44 AM
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#29
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2005
Location: Buxton, North Dakota
Posts: 3,940
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I think you probably have 4 6 volt batteries for the house side of the motor home and 2 6 volt batteries for the chassis side of the motor home. You would need to charge the house batteries separately from the chassis batteries. In all instances you would charge them at 12 volts. The 6 volt batteries are series connected for the chassis and series/parallel for the house. Your chassis batteries shouldn't run down while dry camping and would only need to be charged in an emergency situation.
What model motor home do you have?
__________________
2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C F53V10 Handicap Equipped
1999 Jeep Cherokee, 1991 Jeep Wrangler Renegade and 2018 Chevrolet Equinox Diesel
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03-07-2015, 09:13 PM
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#30
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Senior Member
Join Date: Jan 2015
Location: BAYTOWN, TX
Posts: 124
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Thanks for your feedback. I now know that charging the 6 volts batteries has to be done with a 12 volt charger. I am just learning how this all works and was simply looking for a cheaper way to charge the 6-6volt batteries without running the 7000 watt house generator. I thought maybe I could use a commercial grade 12 volt charger powered by a 2000 watt Honda generator and save a lot of fuel versus using the house generator. I am beginning to believe this is not true. I am also concerned with damaging house electronic components (12v and 110v) by using an external charger on the batteries. I was trying to find a way around buying very expensive solar power panels. We plan on doing a lot of boon docking so I am just looking for my best alternatives at charging the batteries for the least amount of cost. I realize that if you plan on boon docking, you have to keep your batteries charged. I obviously have a lot to learn and that is why I am deeply researching all I can find out before we buy our motor home early next year.
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03-09-2015, 06:48 PM
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#31
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Senior Member
Join Date: Aug 2004
Location: Wherever we are
Posts: 4,282
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I often camp for 2-3 weeks without power. When the 2x6 volt Trojans get low, I get out a Schumacher digital-readout charger, connect it to the batteries and the genset in the trailer. I charge it at 10amp rate for about an hour at a time. This seems to work well for me and gets me about 2-3 days more battery life. I have all lights in the trailer changed to LEDs, that has help tremendously in how long I can go without recharging.
Joe
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'16 40QBH Phaeton
'21 Sahara HA toad
'15 38RSSA Mobile Suites--traded
'05 36TK3 Mobile Suites--retired but not forgotten
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03-09-2015, 07:34 PM
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#32
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Senior Member
Join Date: Jul 2014
Posts: 35,349
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Wingnut60,
I`m sure, what you are doing, works for you.
I just want to point out that you have about 220 AH of battery and, as you stated, when they " get low ", you charge them at 10 amps for an hour.
That means you are putting 10 AH back in, after, possibly, using up to 100 AH.
You could safely use a 25 amp charge rate, for over 2 hours, if your batteries are at 50% (12.1 volts ).
Leaving batteries chronically, under charged, will shorten their life.
It is recommended that wet cell batteries, stay between 60% to 80% state of charge. ( 12.2 to 12.4 volts ) while in use.
During storage, they need to be charged to 100% ( 12.6 + ).
Enjoy
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03-13-2015, 04:59 AM
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#33
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Senior Member
Join Date: Oct 2011
Posts: 1,312
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Go solar. I never could charge my batteries properly with a generator. Batteries needed replacement after 2 years.
Though my 200 watt solar system cost the same as a good Genny, I got my payback with battery life. It's a no brainer to me solar does work and generator don't.
__________________
Barbara and Laurent, Hartland Big Country 3500RL. 39 ft long and 15500 GVW.
2005 Ford F250 SD, XL F250 4x4, Long Box, 6.0L Diesel, 6 Speed Stick, Hypertech Max Energy for Fuel mileage of 21 MPusG empty, 12.6 MPusG pulling the BC. ScangaugeII for display..
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05-07-2015, 06:02 PM
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#34
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Senior Member
Join Date: Jan 2008
Location: Big Bear Lake, Ca
Posts: 915
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Some Trojan batteries like to go to 14.8v to fully recharge. Solar does this, match solar wattage to ah of battery.
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2004 CRV TOAD/1990 WRANGLER TOAD ROCK BUILT
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