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? (My RAM is a 2015 Express...yes, I know this is a 5th gen forum, but I no longer have my 5th gen RAM)

 

[GATORB8]

The fuse should blow when it’s amperage is exceeded.

 

[Skyflyer]

The fuse should blow when it’s amperage is exceeded.

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?

 

[GATORB8]

Just appears to be the fuse from the quickest diagram I could google. May need a battery management controller if it's not built in to the battery.

https://i.pinimg.com/originals/94/ac/3c/94ac3cae74844377130a6d1fc3115aab.jpg

 

[tjcart]

You'll likely have to put an inline DC-DC charger that is designed for lithium ion batteries.