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Old 02-03-2015, 01:20 PM   #11
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Be careful choosing a generator if you go that route, You are headed to Federal park and they will not allow non approved generators.
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Old 02-03-2015, 01:39 PM   #12
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We will be spending eight days in cades cove this year. I take two batteries but have an 1800 watt inverter under back seat of truck. As we constantly drive around the loop I charge one battery in the back of the truck.
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Old 02-03-2015, 01:42 PM   #13
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You might also find the power outlet will not give you enoigh power for the battery charger or it will take a long long time to charge.
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Old 02-03-2015, 03:06 PM   #14
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You might try checking with rental places ( both equipment and party rentals) to see if you can rent something like a Honda 2000 for the week. Running the fridge on battery is not practical as it will deplete the battery quickly.
The fridge won't be much problem. 12v is only used to operate the circuit board. The cooling energy comes from propane. The heater is a large 12v consumer of the battery - the fan will kill a single 12v battery in as little as one very cold night. I think the idea of moving the battery to the TV for charging on day trips around the park is a pretty good one. This solution really means a second battery bc you will want the refrig to operate while you are away from the camper. Also, I wouldn't want to leave a light weight generator running all day unattended. Too tempting - think theft.
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Old 02-03-2015, 06:36 PM   #15
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Here's what I'd do:
1. Get a second 12V battery of similar size to your existing one...IF your existing one is not more than a year old and has been treated well. 6V batteries are great if you want 4 of them.....12V is better if you can only have 2...if one fails you still have power!

2. Rent or buy Honda or Yamaha type QUIET 2000 watt generator.

3. BUY a 30-40 amp charger you can plug into the generator to charge the batts. Trying to do it from the 12V plug will take FOREVER! You can keep and use this as a better way to charge your batts when you DO plug in your unit. The little 3 pc package here would be ideal. Amazon.com: IOTA Engineering (DLS30) 30 Amp Power Converter/Battery Charger: Automotive
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Old 02-03-2015, 08:42 PM   #16
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Xantrex is one of the premier battery chargers available. It is an education to delve into the manual. These two chargers each can charge 3 separate batteries each with their own characteristics. For a group 24 or 27 battery, the Truecharge 20 should be very satisfactory. Reading the manual will talk about the charging characteristics and give formulae for calculating charge time. Happy reading.


http://www.xantrex.com/documents/Dis...1_Rev-A%29.pdf
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Old 02-03-2015, 08:53 PM   #17
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With a (decent) generator I always recommend 1 hour of charge every other evening, just remember genset time ends at 8. With the nature of flooded lead-acid batteries you'll get more power per gallon of fuel going every other night since they accept a larger charge when the are more deeply discharged. As for the genset, don't get one of those cheap ones mentioned earlier. It will be so loud neighbors a half-loop away will hate you.

With no generator I always recommend the "poor man's generator" when you only need to do this a week or so a year (when it doesn't make sense to buy a genset). A good set of jumper cables, hooked battery to battery (TV to camper), running the TV for an hour every other evening.
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Old 02-03-2015, 09:30 PM   #18
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When we went to Yellowstone, we had two 12v batteries for our TT but only room for one on the TT battery rack so I bought an extra trailer wiring harness from e-trailer (7-Way Molded Trailer Wire Connector, 8' Long Hopkins Wiring H20046). I cut all but the two charge wires off short and taped them up to prevent them shorting out and then attached wire lugs to the two charge wires. I could then put whichever battery wasn't in use in the bed of the truck and hook it up using the extra trailer harness and charge it while we drove around sightseeing for the day...or even two. I used an extra plastic battery box, a battery box lock (B & D RV Battery Lock For RV travel trailers and popup campers.), and a small chain looped through one of my cargo loops to keep it from just sprouting legs and walking off.
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Old 02-03-2015, 09:53 PM   #19
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Quote:
Originally Posted by techntrek View Post
With a (decent) generator I always recommend 1 hour of charge every other evening, just remember genset time ends at 8. With the nature of flooded lead-acid batteries you'll get more power per gallon of fuel going every other night since they accept a larger charge when the are more deeply discharged. As for the genset, don't get one of those cheap ones mentioned earlier. It will be so loud neighbors a half-loop away will hate you.

With no generator I always recommend the "poor man's generator" when you only need to do this a week or so a year (when it doesn't make sense to buy a genset). A good set of jumper cables, hooked battery to battery (TV to camper), running the TV for an hour every other evening.
Depending on the TV, the "Poor Man's Generator" could create hateful neighbors even further away than a cheap generator would (think 2002 Powerstroke)! I like this suggestion a lot though for an occasional dry camp.
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Old 02-03-2015, 10:13 PM   #20
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Or 97 Cummins, LOL
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