We leave the two 100 watt panels I mounted on the roof to keep all 3 batteries charged. Once the funds are available for a carport to park the MH under I'll add a single 100 watt panel to the carport and plug into the leads from one of the current roof mounted panels.
We leave the roof panels on all the time even when connected to shore power. The panels will take over charging from the converter once full sun gets to them.
2016 Axis 24.1 E-450 6 spd tranny
300 watts portable solar.
200 watts solar on the roof.
Wrangler JK dinghy