I put some solar panels on an RV before switching over to the experimental. They’re down the centre aisle. Upon loading my saved game in the experimental I found that all the (partially charged) batteries I’d installed in the RV have no charge and they aren’t recharging by solar power.
What’s going on? Do you need to place the panels on the outside walls of the vehicle or something? I assumed they were roof mounted.
Update: I moved the panels to tiles marked as “out” on the vehicle. It’s now a summer day and I’ve been sleeping near the vehicle. It’s still on zero charge.
Also note that (IIRC) batteries are a lot larger now, so when combined with the slower charge it can take quite some time for it to move from 0% to 1%, despite it actually charging the batteries.