View Poll Results: if I'm going to be parked for a year and plugged in do I need a battery
yes you can go without battery 2 22.22%
yes you can sidestep univolt 1 11.11%
no you must have both 6 66.67%
Voters: 9. You may not vote on this poll

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Old 04-14-2014, 12:42 PM   #1
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1976 31' Sovereign
ompah , Ontario
Join Date: Mar 2014
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If I dont need a battery power can dispense with univolt? can I dispense

I'm making a 4 hour drive with new brakes . Heard lots of stories about batteries being burned for various reasons . Do I really need a batery for towing or once I'm plugged in in new location?

Right now trying to decide between the iota 55 and progressive dynamic 9260. Any suggestions appreciated.Peter

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Old 04-14-2014, 12:58 PM   #2
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You need a battery when you are towing so the breakaway switch will have power to turn on the brakes in case the trailer becomes seperated from the tow vehicle.

Most battery charger/converters are much happier when there is the load of a battery on them and the power out is much cleaner. It would be good to check with the maker of whatever converter you select about running it with out a battery.
You need some kind of 12 volt source because that is the voltage most of the trailer operates on

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Old 04-14-2014, 01:06 PM   #3
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Unless a PO has done some serious rewiring, then everything except the 110 V outlets (and airconditioner) are powered by 12V (ie., refrigerator controls if equipped, lights, fans, sound systems, thermostats, tank monitors, furnace, etc.) The old univolt needs to have a battery in the system, or it won't last long. This may not be true of some modern converters. But, as mentioned above, you need a 12V battery on board to power your brakes in the event of a break-away situation.
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Old 04-14-2014, 01:09 PM   #4
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Yes, you need a battery for towing. Without it, your breakaway switch will not activate your trailer brakes; once the umbilical comes loose, you'd have nothing. Disabling required safety equipment by towing with no battery is not a good idea.

I'll decline to answer the question of whether you need a battery if you'll be plugged in for a year. Others will be better able to answer that.
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Old 04-14-2014, 01:57 PM   #5
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I agree with Belegedhel, you will most likely need the battery. You can mount a small battery just for the brakes, however the bulk of the lights and such in your trailer are 12 volt powered. I have seen some that were converted completely to 120v but they are the exception rather than the rule and still require a battery for the emergency braking system. No real opinion on which inverter, I like the specs on the Progressive a bit better than the ones on the Iota but that is me.

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Old 04-14-2014, 02:20 PM   #6
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I'll say yes to removing the univolt/charger, but no to removing the battery totally.

Our Trillium doesn't have a coach battery, and no electric brakes. All interior lights etc run on 120v, makes it a poor choice for boondocking but it doesn't have a water pump either

My car trailer has a small battery mounted on the tongue to activate the brakes in case of a breakaway, its smaller than the battery in my lawn tractor and charges off of the tow vehicle only, no converter.

If you don't need 12v interior power you don't need a converter, but since you have electric brakes you must have a battery.
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Old 04-14-2014, 03:06 PM   #7
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You need both, but not at the same time

I'll go with the majority. You need both, although perhaps not at the same time. You need a battery for towing to operate the brakes if the trailer should separate from the tow vehicle. You don't need a converter while towing. You need a converter while parked as others have said. I just yesterday finished the installation of a pd9260 in my 2001 Safari 25. The manual says it is designed for use with a battery but a battery is not required as the output power is regulated and filtered and can be used with sensitive electronics without a battery or other filtering.

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Old 04-14-2014, 03:46 PM   #8
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Yes, you really need a battery in the trailer to tow legally in many states.

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