I have a Bluetti Elite 100 v2 charging off my truck battery with a BLUETTI Charger1 560W, When the car is running the unit only charges at around 15-20 watts 14v at around and amp is what it reads on the app. Occasionally it will kick up to 220/230 watts which is what I expect it to charge at but is quite inconsistent and most of the time when the car is running it is charging at 15W.
I can seem to change the input setting which I believe is P02 on this model it skips from P01 to P03, when charging it thinks the input is a solar PV input on the app. I am using the included hardware for the charger and the truck is a 1997 toyota. Is this a setting issue? Any ideas