Al, you ask good questions but I don't know the answers. I'm sure there are people here who do.

I do think a charger on the dock is a good idea, as relying 100 percent on solar seems risky, especially for hours of use in windy conditions.

7ac 2015 CNBG RES FHM 2016 TP FLMB 2017 NLMB GSH L 2018 TP & 70 HSB PK 2019 TP RBT 2020 TFS TP 25 HSB 250 F1,L,RBT -206 2021 TFS TP GSH L,-312 2022 GSH TP CR TFS RBT -234, 2023 BG TP TFS NLMB, -160