2013 Grey Wolf battery does not seem to be charging

[merlin66043]

Bottom line up front: Older battery died and bought new battery hoping that was the problem. After checking new battery noticed it seemed to be going down as well. Checked using voltmeter when got home and battery was down to 11.5 volts or so after about a day and half. Trailer was plugged up to shore power all weekend expected it be 13+. Fuse I don't know about or something else to check? Converter breaker inside seems to be fine. Can't remember if I tried to reset by turning off and back on.

More details:

Last week took trailer out of storage for first trip. The day before put the battery on a charger for a few hours to top it off prior to going to get trailer. Wife went and picked up the trailer and when using the power jack the jack fuse blew twice (fuse between jack and battery not anything inside). Got the trailer home and hooked up to the house power (not a 30 amp plug just a normal plug) like a do prior to every trip and proceed to get it ready to go.

Leave a couple days later for a weekend trip and the battery is pretty weak. Just barely gets the jack up. Think well that's pretty unusual because should be charging while plugged up to the house. Never had a problem before. We go ahead and leave thinking maybe battery might charge a little on way down. It's about a 75 mile drive to lake lot. get there and of course battery has not really charged. just enough juice to kinda get jack down. Get shore power plugged up and realize the battery is so dead that the 12V system barely works (lights, fridge, pump, ect.). Found out that nothing on the 12V system works if you don't have a battery in at all (was going to charge with a battery charger overnight).

Looked at the fuse panel and noticed that the radio fuse was blown so replaced it hoping that would help the batter charge overnight. Not such luck. Battery did not charge overnight so went and bought new battery next day hoping that the battery was just bad. It was about 3.5 years old. Got new battery and hey everything works great. Continue with the weekend and I check the gauge inside throughout the day and notice by nighttime it has gone down some. I had forgotten my multi-meter so didn't have another way to check battery. Get home and check it and find out it has gone down to about 11.5 volts. Not what I expected to see. So it appears that for some reason the charging system is not working. Was wondering where I should look first. Is there a fuse or something by the battery I am not seeing or something else I can do? Won't be using the trailer till memorial weekend and it's not with me right now.

Thanks for help.

[boondocking]

If your 12v stuff works (even a little) with battery only (not plugged in to shore power), then the disconnect switch is not off and the circuit breaker is fine.
Plug into shore power and take voltage reading at the battery terminals, should read 13+ volts. If it doesn't read 13+ volts then the converter is shot.

[ScottBrownstein]

if you don't get 13+ at the battery with the shore power applied, then check the output of the converter, right on the converter itself.

If that isn't 13+ then...

check the input to the converter and verify that it is 110VAC.

If 110 is there and the output is not 13 volts or more, the converter has a problem. Perhaps someone hooked it up with reverse polarity. If so it may have blown output fuses. If the output fuses are good, the converter is shot.

If there is 13 or more coming out of the converter then you may have a wiring problem.

Never a simple one step problem...

[boondocking]

Forgot to mention about checking for 110vac at the converter and the reverse polarity fuses. My Bad

If the lights etc work with the new battery like he said then there could not be a problem with the wiring between the converter and the battery.

[merlin66043]

Might be a silly question but where is the converter normally located? This is a 2013 Cherokee grey wolf.

[bikendan]

Originally Posted by merlin66043

Might be a silly question but where is the converter normally located? This is a 2013 Cherokee grey wolf.

Varies by model.

[fonzie]

Find your fuse panel and see if the two reverse polarity are blown: either 30 or 40 amps fuse. See the two orange fuse below....if you replace fuses and these blow again, your battery is probably hook up wrong....

[merlin66043]

One more question - if the converter is working properly does the battery still need to be attached for the 12v stuff to work?

[ScottBrownstein]

No. Most Converters will power everything without a battery attached.

[merlin66043]

Know it's been awhile but did want to say it was the 2 40 amp fuses. Not sure why I didn't check that weekend but now I know.