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Old 01-08-2014, 10:51 PM   #1
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Portable power source as inverter

I have a Wagan Tech 'Power Dome' portable power supply, and I was wondering if it would run my Rockwood Mini Lite's TV.

The device has a 400 watt inverter, and two 110 outlets. It can be charged either with a 110 charger or with a 'cigarette lighter' type 12v charger designed to let you charge the unit while driving your car.

What if I plugged the 12v charger into one of the receptacles in my TT, and then ran my TV, Sat dish and receiver from the Power Dome? I would need a couple of splitters, as I need four 110 plugs to watch TV. This should work, as I would be essentially running off both of the 12v batteries on my TT, and the one in the power supply, right?
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Old 01-09-2014, 12:54 AM   #2
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If I'm understanding this correctly, you want to run the internal 12V charger for the Power Dome with the TT batteries and plug the TV, sat dish and receiver off the Power Dome, correct? Looking at the specs on the Power Dome (the link is below), it doesn't have much capacity...will power a color TV (70W) for 1.2 hrs...and takes 12hrs to recharge with 12V DC. I would think that it's discharge rate powering those 3 things will vastly exceed it's recharging rate and won't power your set-up for very long.

2354 • Power Dome™ (400W) - Power Domes™ - Power Supplies - Products

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Old 01-09-2014, 01:09 AM   #3
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If I'm understanding this correctly, you want to run the internal 12V charger for the Power Dome with the TT batteries and plug the TV, sat dish and receiver off the Power Dome, correct? Looking at the specs on the Power Dome (the link is below), it doesn't have much capacity...will power a color TV (70W) for 1.2 hrs...and takes 12hrs to recharge with 12V DC. I would think that it's discharge rate powering those 3 things will vastly exceed it's recharging rate and won't power your set-up for very long.

2354 € Power Dome„ (400W) - Power Domes„ - Power Supplies - Products

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Yeah, I was afraid of this. The question remains; how long?
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Old 01-09-2014, 09:45 AM   #4
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If you can look up in the specs for the TV, sat dish and receiver for power draw in watts and compare to the examples they list, you'll have some idea. I wouldn't figure on the internal 12V charger to lengthen that time much at all.

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Old 01-09-2014, 05:36 PM   #5
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If you can look up in the specs for the TV, sat dish and receiver for power draw in watts and compare to the examples they list, you'll have some idea. I wouldn't figure on the internal 12V charger to lengthen that time much at all.

Dave
I finally got through to a tech at Wagan Tech that makes my Power Dome, and he confirms what you're saying. It wouldn't charge up nearly fast enough to keep up with the usage.

So, I guess my best solution is to get an inverter, maybe 500 watts or so, and see how long that would run my TV stuff. That would give me an excuse to upgrade from the two 12v batteries I have to a couple of 6v's for more time. I just couldn't justify it before!
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Old 01-09-2014, 06:13 PM   #6
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How about this;

What if I just ran my TV, no receiver or sat system, off of the Power Dome, and used the DVD player in the trailer to play a movie.

That thing powered a small upright 'Penguin' air conditioner for about a half hour one time, so I suspect I can get at least enough time running just a television to watch a movie.

The radio and CD player run on 12v, so the DVD playing function should work too, right? I've just never tried it without 110 power on for the TV.
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Old 01-09-2014, 10:40 PM   #7
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I'm not much for dry camping but I'd think that 2 - 6V golf cart batteries and the capacity that they would provide is the way to go instead of messing around with the Power Dome at all.

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Old 01-09-2014, 11:33 PM   #8
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I'm not much for dry camping but I'd think that 2 - 6V golf cart batteries and the capacity that they would provide is the way to go instead of messing around with the Power Dome at all.

Dave

X2. A 400 or so watt inverter hooked to your 2 batteries would do the trick fine. You don't need to go to 6volt bats if your current ones are in good condition. Install the inverter close to the battery and run a 110 volt line to the area of the TV. A bit of work, but a great way to go.
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Old 01-10-2014, 12:35 AM   #9
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Why not just run one of your generators for a while?
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Old 01-10-2014, 06:49 PM   #10
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I'm not much for dry camping but I'd think that 2 - 6V golf cart batteries and the capacity that they would provide is the way to go instead of messing around with the Power Dome at all.

Dave
Well, the TV is 110 AC, so I would need a source of AC.

I gather two 6v batteries would give me more amp hours, though I would still need an inverter.
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