In the back of my 2014 Grand Cherokee, I have a 50amp slim lithium battery and has been working fantastic.
I also have a 30l draw fridge which works 24x7.
When driving I have a 25amp DCDC charger , works great and a solar panel on top when parked.
i have noticed though, when the car is in the garage overnight, that the 10amp battery charger (& previous charger) would charge all good, then when showing the battery is full charged, stop, as it should The fridge keeps going , but the charger doesnt kick in unless the charger is turned off and then on. In the morning the battery can be at 12.9 or 13.0