Trouble charging lithium camper battery

Your BMV settings may well be wrong, especially your charged voltage. Have a read of this FAQ for solving high SOC at low voltage.

https://community.victronenergy.com/t/shunt-battery-monitor-jumping-to-100-or-reporting-a-high-soc-when-the-volts-are-low-and-or-the-bms-has-disconnected/88