While hooked to shore power the battery (per monitor) is fully charged. After a days travel, the monitor shows half drained. It is my understanding that while moving the TV will recharge the battery.Here are some facts. Before we leave each day a hookup check is done. All lights (brake, signal, running lights) work. The factory installed brake controller shows my selected gain and brakes are working fine. Here is a picture of my plug, which connection supplies the jucie to the battery? We just returned to the lower 48 today from Alaska, so a loose wire is not out of the question. We don't boondock so the battery is not essential, but if the battery is suppose to charge off the TV then something is wrong and is not going to fix it'self. Suggestions please.

I'd suspect a "parasitic load" from something in the trailer first.If something like the fridge is operating on 12v once you unplug from shorepower, the tug won't be able to keep up with the demand.

A Defective battery or maybe a light got left on. It could be Ur TT doesn't charge the battery during travel, I mean It just doesn't have that feature of charging your battery on your TT while charging. But all TT should charge the battery when pluged in 120v. Trucks don't charge the battery when the 12v plug is in trailer for travel unless it is wired into the trailer battery. The charging of a TT battery while traveling would be a custom mod. Unless its a moterhome.

Did you check TV fuses?There are separate fuses for brakes and such and for "charging". I had same issue. Brakes, lights, everything fine... but batteries dying. Realized a 30A fuse on the truck was burnt. Replaced and everything now OK.

All 7 pin trailer connections have the ability to charge the trailer battery while under way. Get yourself a 12 volt meter. With the truck ignition on, the pin on the truck side at 1:00 o'clock should be hot.

checkout ETRAILER.COM they are the best place to research anything and everything trailer wise including diagrams of the shore power plugs etc...

Battery losing Charge while hooked to TV | Good Sam Community

houstonstroker
Explorer
Jul 28, 2013
All 7 pin trailer connections have the ability to charge the trailer battery while under way. Get yourself a 12 volt meter. With the truck ignition on, the pin on the truck side at 1:00 o'clock should be hot.
Vam_Man
Explorer
Jul 28, 2013
Did you check TV fuses?
There are separate fuses for brakes and such and for "charging". I had same issue. Brakes, lights, everything fine... but batteries dying. Realized a 30A fuse on the truck was burnt. Replaced and everything now OK.
OpenRangePullen
Explorer
Jul 28, 2013
A Defective battery or maybe a light got left on. It could be Ur TT doesn't charge the battery during travel, I mean It just doesn't have that feature of charging your battery on your TT while charging. But all TT should charge the battery when pluged in 120v. Trucks don't charge the battery when the 12v plug is in trailer for travel unless it is wired into the trailer battery. The charging of a TT battery while traveling would be a custom mod. Unless its a moterhome.
Francesca_Knowl
Explorer
Jul 28, 2013
I'd suspect a "parasitic load" from something in the trailer first.

If something like the fridge is operating on 12v once you unplug from shorepower, the tug won't be able to keep up with the demand.

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Battery losing Charge while hooked to TV

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