Drove Home 8 hours and battery is only showing half charge

[dznf0g]

Also, I would remind everyone the a description of' "my batt was low, I drove xxx miles and my batt wasn't full" doesn't tell you anything. How low? 50%, 40%, 30%, dead? How full when arrived home? 60%, 70, 90?

Your LED monitor tells you virtually nothing.

A volt meter on a disconnected and rested battery is accurate, but a hassle.
If you really need to know, and I suggest you might, you need to get a quality battery monitoring system that tells you the amp hours your are using while dry camping and the amp hours being restored by your TV. (among many other data points the monitors will provide).

[Inland RV Center, In]

Originally Posted by tjdonahoe

When dry camping in the mountains for 4 days drive home, 375 miles my batteries are still low on charge...that is with the dodge diesel...

Usually, when the trailer batteries do not get charged up from the tow vehicle, when traveling, it's because of poor wiring or corroded connector terminals.

Andy

[KJRitchie]

I had an issue with my 2008 Classic 25fb with the batteries not getting charged while connected to the tow vehicle. I have hydraulic disc brakes. When I traced the black 12v wire from the tow power cable I found it did not terminate to the 12v bus on the trailer but went straight to the hydraulic actuator. I cut the black wire and connected both ends to the 12v bus adjacent to the store/use relay.

If you get a 12v meter that plugs into a cigarette light socket located in your TV area when you have the tow vehicle connected and running you should see the volts rise from 12.x to above 13.x volts in a matter of a few minutes. You can also put a voltmeter on your trucks trailer connector 12v pin and see if there is any voltage showing. On my Tundra its over 13v.

Kelvin

[Shaggy1970]

Like others have said you have to plug in the Charge relay on the F150's, its located in the glove box if truck is new. Also I thought in order for the batteries to take a charge the use/store switch has to be in USE. Right?

[dznf0g]

Originally Posted by shaggy1970AS

Like others have said you have to plug in the Charge relay on the F150's, its located in the glove box if truck is new. Also I thought in order for the batteries to take a charge the use/store switch has to be in USE. Right?

Not on mine, but I know there are various iterations of what's shut off with the store switch and what's not.