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Old 08-26-2014, 09:20 PM   #1
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Charging With Generator, Converter or Charger?

I know, confusing title. Here's the story, we're planning a decent length boondocking trip and battery power is a concern. The RV is a Rockwood 2109S and it only has one group 24 battery. I have a Honda EU2000i that I'll be bringing but I'm wondering if I should just recharge the battery through the converter or bring along my Schumacher automotive battery charger? Reason I ask is that I heard the converter charges at a low amperage where I can select the amperage with the Schumacher charger.

Later down the road I do plan on adding a second battery but I want to wait until I can replace them in pairs. I heard it's not recommended to add a new battery with an old battery.

Thanks.
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Old 08-26-2014, 09:38 PM   #2
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Originally Posted by GearHd6 View Post
I know, confusing title. Here's the story, we're planning a decent length boondocking trip and battery power is a concern. The RV is a Rockwood 2109S and it only has one group 24 battery. I have a Honda EU2000i that I'll be bringing but I'm wondering if I should just recharge the battery through the converter or bring along my Schumacher automotive battery charger? Reason I ask is that I heard the converter charges at a low amperage where I can select the amperage with the Schumacher charger.

Later down the road I do plan on adding a second battery but I want to wait until I can replace them in pairs. I heard it's not recommended to add a new battery with an old battery.

Thanks.
True, always replace batteries together, they need balance to deliver the necessary amperage and not shorten either batteries life span. Look up the make and model of your converter, or read provided literature. If it is a three stage charger, thats all you need. Just look up how a three stage charger works, it's actually pretty slick. Note: don't take your bat down past 12.06v or 50%, before you recharge it. Happy boondocking.
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Old 08-26-2014, 09:48 PM   #3
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Is the battery junk if it gets below that voltage? Reason I ask is it got pretty low this year. So low that the fridge shut off over night and the water pump wouldn't even work. That was just one night though.
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Old 08-27-2014, 06:56 AM   #4
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No, the battery will not be junk if you run it completely down. There have been posts on the forum stating that the battery life and capacity are reduced, but it will still have a useful capacity.

I can attest to this because I have run ours completely flat several times. This happened when we had to run the furnace a lot and were not allowed to run the generator enough. The potential cost to replace batteries was much less than the cost to my person if I let my dearly beloved's little dog get cold!

The batteries are now four years old and still work okay. I don't know the usable capacity of them now compared to new ones.
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Old 08-27-2014, 08:08 AM   #5
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I'd also just use the converter to recharge the battery.

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Old 08-27-2014, 08:25 AM   #6
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If you're boondocking, I'm guessing you'll be somewhere that running the generator isn't restricted, so +1 on letting the converter charge your battery. That Honda will run all day (figuratively) on a tank of gas, and unless you're running your AC, it should stay in econ mode and just sip fuel. Start it up, plug in, and forget about it until it runs out of gas. Refill, repeat.
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Old 08-27-2014, 08:33 AM   #7
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Battery Charging

My 2000's came with a charging cable. Not sophisticated, but would work in a pinch. Have to keep an eye on overcharging. I've never used it, convertor is 3 stage and I also carry an OLD charger. Must just be paranoid.
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Old 08-27-2014, 08:34 AM   #8
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Originally Posted by Taranwanderer View Post
If you're boondocking, I'm guessing you'll be somewhere that running the generator isn't restricted, so +1 on letting the converter charge your battery. That Honda will run all day (figuratively) on a tank of gas, and unless you're running your AC, it should stay in econ mode and just sip fuel. Start it up, plug in, and forget about it until it runs out of gas. Refill, repeat.

Yep. That would be my plan also if I intended to head out for a boondocking trip.
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Old 08-27-2014, 04:18 PM   #9
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Thanks everyone for the replies. I'll look into the converter model but I'll most likely just let it do the work. My EU2000 is the Companion so it doesn't have the 12v charge port.
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Old 08-27-2014, 04:46 PM   #10
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It's probably not very popular, but if you have a Schumacher I would choose that over the stock converter. I would check with the manufacturer, but if I'm not mistaken, your 24 should be able to take 13.8 to 14... which the stock converter won't provide. It's doable, but it's kind of handicapping your battery capacity and you'll put a few more hours on hour Honda that aren't really necessary. For a short trip it's certainly doable though. Dont sweat the little stuff.
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