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Old 01-17-2015, 03:54 PM   #1
Join Date: Mar 2012
Posts: 33
jumpstarting boosting 2012 seneca

its winter and cold--and every 6 weeks or so i start up the seneca and generator for a couple of hrs. today neither the generator or truck will start. there is power just not enough to start either. can i jump start the system from my car 12 volt battery? if so how? cannot find online the points to attach to the motor home.
i know where both chassis and house batteries are
any suggestiona appreciated


2012 Seneca FS
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Old 01-17-2015, 05:12 PM   #2
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Location: King George
Posts: 2,396
I would jump at the batteries. Your 12VDC car battery terminal to the trailer 12VDC battery terminals. I always hate doing this as if I screw up I will blow fuses and have even more problems to deal with... If your trailer batteries are in good shape they will charge up enough to start your motor in just a few minutes.

What you really should do is rig something to keep the trailer batteries topped off when sitting. A trickle charger or small solar panel will work just fine.

You are flirting with having to replace your trailer batteries and we all know how expensive that is... If I let my batteries get below 12.0VDC and not get re-charged right away I find them dropping off on performance. If I continue doing this then I will find my batteries too far gone to ever do right being re-charged again...

I lost one battery doing this and decided right away to start really watching my batteries and come up with a method to keep them topped off during storage periods.

Money doesn't grow on trees around here hehe...

Just saying

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Old 01-17-2015, 05:22 PM   #3
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Hook up as stated. Let you car run 10-30 min to get some power in the battery's . Then it should start. You need a disconnect switch to stop discharging while sitting. Lots stuff still running off the battery's when it's sits.
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Old 01-17-2015, 07:54 PM   #4
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If its that cold let it sit, try starting on a sunny day. Sun beating on the hood makes a big diff
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Old 01-18-2015, 07:07 AM   #5
Join Date: Mar 2012
Posts: 33
thanks for the advise

is warmer today 36 degrees
i think i need new batteries as i have not been too kind to these ones and they are 3 yrs old.
was thinking of replacing both house and coach with lifeline or odyssey AGM
does anyone know which ones I should order?

thanks niall
2012 Seneca FS
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