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Old 02-19-2011, 07:25 AM   #11
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Or buy a set of Trojan T105 6volt batteries. They give you 447 min @25 amp draw. You do need 2 of them in series though. They are very heavy though but are probably the one of the best batteries on the market, Troojan also makes 12v units and you would need 2 of them to come close to the 6V's capacity. But you do get what you pay for.
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Old 02-19-2011, 08:54 AM   #12
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If you do use your batteries a lot (dry camping) you will NEED a dedicated 3 stage battery charger and a generator to replace the current you draw when the generator is not running.

Your house power center is designed to provide 110 volt AC and 12 volt DC to power the appliances in your camper. It also will charge your batteries but will do so in stages designed to maximize the life of the battery (IE SLOWLY).

While you can pull out 50% of the batteries maximum possible amps in a few short hours; it can take DAYS to replace using the house power center alone. The bigger the bank in amps; the longer the process takes since the stages shift as a percentage of battery capacity (whether measured by voltage; specific gravity; or internal computer).

There is a fixed amount of amp output for each stage of charge. Having a 500 amp hour bank will take 10 times longer to recharge than a 50 amp hour bank.

Running the generator DOES NOT HELP HERE. It uses the SAME power center as shore power. DAYS to top off your bank...

It is far better to plug a dedicated Deep Cycle Battery Charger into an outlet on the generator and hook THAT to your batteries than use the on board power center. Just make sure if you are using a computer to monitor your battery status the PLUS clamp/terminal is located where the red wires split to go to your batteries + terminals (so all batteries are charged) and the Negative clamp/terminal is on the HOUSE SIDE of the Ammeter Shunt so the computer notes the increased amps into the batteries.
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Old 02-19-2011, 09:10 AM   #13
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Yeah what lou said lol
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Old 02-20-2011, 01:58 PM   #14
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All great info!! Thanks. Looks like I have a little homework to do in order to make a good decision.

How much charging happens while hooked to the TV's 12v connection? My truck also has a 3.3amp/400w inverter but I don't think that will be of much use, seem like an expensive generator.


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Old 02-20-2011, 04:14 PM   #15
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How much charging happens while hooked to the TV's 12v connection? Paul
not more than a trickle. a TV's alternator is a poor source for recharging your trailer's battery and is really only a last resort.
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Old 02-21-2011, 05:25 PM   #16
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If you search online there are a few retailers selling LED conversion lighting that uses the existing light fixtures. I haven't tried them yet but looks interesting. Thought I would just replace the one on lights that get used most. Should help the battery last longer.
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Old 02-21-2011, 05:30 PM   #17
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What is the advantage of two 6V batteries? I have seen that mentioned on other threads.
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Old 02-21-2011, 06:42 PM   #18
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If you do use your batteries a lot (dry camping) you will NEED a dedicated 3 stage battery charger and a generator to replace the current you draw when the generator is not running.

Your house power center is designed to provide 110 volt AC and 12 volt DC to power the appliances in your camper. It also will charge your batteries but will do so in stages designed to maximize the life of the battery (IE SLOWLY).

While you can pull out 50% of the batteries maximum possible amps in a few short hours; it can take DAYS to replace using the house power center alone. The bigger the bank in amps; the longer the process takes since the stages shift as a percentage of battery capacity (whether measured by voltage; specific gravity; or internal computer).

There is a fixed amount of amp output for each stage of charge. Having a 500 amp hour bank will take 10 times longer to recharge than a 50 amp hour bank.

Running the generator DOES NOT HELP HERE. It uses the SAME power center as shore power. DAYS to top off your bank...

It is far better to plug a dedicated Deep Cycle Battery Charger into an outlet on the generator and hook THAT to your batteries than use the on board power center. Just make sure if you are using a computer to monitor your battery status the PLUS clamp/terminal is located where the red wires split to go to your batteries + terminals (so all batteries are charged) and the Negative clamp/terminal is on the HOUSE SIDE of the Ammeter Shunt so the computer notes the increased amps into the batteries.
Thanks,

I took a look at the converter on my trailer and it says its a 3 stage system

Absorption Mode: @ 13.6 Vdc nominal battery charge and appliance power

Bulk Mode @14.4 Vdc fast battery charge for 4 hrs and appliance power.

Float mode: @ 13.2 Vdc trickle charge during storage.

It seems I have the 3 stages needed or is this incorrect. The Bulk and float are almost the same as my tender I use for all my other batteries. And it will cycle between the two.

If this system is adequate it looks like a 1000w generator my be just enough to get me through longer boon-docking periods and not drain and kill the batterie(s) I would concider a larger generator but If I'm going to need the AC I will find a CC with hookups.

Whatdoyathink??
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Old 02-21-2011, 08:04 PM   #19
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Well here is the deal. If you use any 12 volt appliance it will cut down on available amps that would have gone to charge your batteries. Say in charge mode you can generate 15 amps from the house power center and you have the tv and some lights on. Only about 6 amps make it to your batteries.

You can pull a lot of amps quickly but it takes a LONG time on generator powered house converter to put it back.
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Old 02-21-2011, 09:07 PM   #20
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psmcn, i think you'll find that a 2000w inverter generator will only be slightly more than the 1000w one.
with the 2000, you'll be able to run the microwave and everything else but the a/c.
with the 1000w, you'll be limited to a few things and battery charging.

and, if you get a 2000w from Honda/Yamaha or Champion, you'll be able to buy another one later and parallel them, which will come in handy if you move up to a bigger RV.
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