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Old 06-10-2014, 03:34 PM   #1
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Should the battery run down when not plugged in for a while?

We have a new Roo and went camping 2 weeks ago. We were plugged in the entire time and then unplugged it until our next trip. Everything seemed to be off. Any idea what may have run down the battery?


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Old 06-10-2014, 03:38 PM   #2
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Don't know your exact trailer but anything that appears off can really be on. Any radio, tv, phone charger, adapter outlet can have a very small amount of power going to it. Unless it is totally unplugged or the battery disconnected it will use power. Do you have a 12 volt disconnect switch? Usually a silver knob near your power converter that you pull or push. That will totally disconnect the battery.

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Old 06-10-2014, 03:42 PM   #3
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If not disconnected it will. Several things use battery. LEDs on LP, CO2 and Smoke detectors. Leds on 12 v TV or stereo. Display on stereo. Little green light on antenna power booster or power indicator light on frig. You may or may not have all of these but the little bit of drain can discharge the battery quicker than you'd think. Oh yeah, don't forget about the frig on propane still needs battery power to also.
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Old 06-10-2014, 04:13 PM   #4
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Get your battery charged back up and don't do that again. Draining your bat like that will shorten its' life and you want all the bat power life that you can get ...
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Old 06-10-2014, 04:20 PM   #5
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like the others said, there are a number of parasitic power drains you don't see.
that's why many of us install a battery disconnect switch.

but doesn't your Roo have this switch already, since they are supposed to be a factory item now? and are you using it?
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Old 06-10-2014, 04:29 PM   #6
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Here is a short article on Parasitic Power Drains and what to do.

What Kills Your RV Batteries?
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Old 06-10-2014, 11:11 PM   #7
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If you get yourself an AC/DC clamp meter on Amazon for about 50'll be able to clamp the red battery wire and SEE your amp drain when everything is turned off.
Let's say it is 1 amp....then each day you will use 24 amp hours when away from the trailer. If you have 2 large 100 amphour batteries that means you'll be dead in about a week... If you have .5amp drain..then 2 weeks etc. etc.
This will let you plan for how long you can leave your coach without recharging. Also useful for when you ARE using your know how many amps you are drawing our so you know when to recharge.

Alternatively...remove the negative post cable from your battery after fully charging and that will give you a few months of worry free storage.
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Old 06-11-2014, 01:29 AM   #8
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Two weeks? Something is left on drawing power because it should halve lasted far more than two weeks.
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Old 06-11-2014, 05:03 AM   #9
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My battery will die within 2 weeks if it is not disconnected. All the parasitic loads adds up.

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Old 06-11-2014, 06:41 AM   #10
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Yep, two weeks in storage will kill the battery. We installed a cut off switch and now the battery will last a few months.

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