7 Pin Connecter - Current Limiter?

[Skyflyer]

Pulling an RV with a standard lead acid battery and when plugged into my RAM through the 7 pin connecter the battery gets charged from the truck. I want to replace the lead acid battery with lithium but in order to connect it to the RAM I need to know if there's a current limiter on the RAM because the lithium battery can draw larger amounts of amperage and that can damage the alternator. Does anyone know if the RAM 7 pin connector has a current limiter? (RAM 2015 Express)

 

[caulk04]

I'm sure it's fused and the alternator should have no issue keeping up inside that fused rating.

 

[Skyflyer]

Yes, but if the current isn't regulated it will blow the fuse every time I use it. Is the current limited through the 7 pin connector?

 

[Fast69Mopar]

Yes, but if the current isn't regulated it will blow the fuse every time I use it. Is the current limited through the 7 pin connector?

If I remember correctly charging from the
7-pin connector is regulated between
2.0-7.0 amps.

 

[pacofortacos]

.

 

[JackLaramie]

Pulling an RV with a standard lead acid battery and when plugged into my RAM through the 7 pin connecter the battery gets charged from the truck. I want to replace the lead acid battery with lithium but in order to connect it to the RAM I need to know if there's a current limiter on the RAM because the lithium battery can draw larger amounts of amperage and that can damage the alternator. Does anyone know if the RAM 7 pin connector has a current limiter? (RAM 2015 Express)

Be careful. Li batteries can potentially suck the truck dry. Trailer should have & connect thru a DC to DC charger which will save your Alternator.

 

[asweeney32]

I am currently dealing with this same issue and would love to know what you’ve uncovered.

Here’s what I am going to try. I do not want to go to the expense of adding a DC to DC charger and only want to disable the charge coming from the 7 pin. I am actually showing through my smart shunt on my Lithium bank that the truck is drawing power from my RV batteries when plugged in. I located a 30A fuse under the dash and pulled it and this seems to have fixed the problem. All lights, brakes and breakaway switch still operate correctly.

Fuse = F01 (pink 30A)