topsolar flexible solar panel 50w 24v/12v monocrystalline bendable - 50 watt 12volt semi-flexible mono solar panels charger off-grid for rv boat cabin van car uneven surfaces topsolar topsolar flexible solar panel 50w 12v monocrystalline bendable - 50 watt 12volt semi-flexible mono solar panels charger off-grid for rv boat cabin van car uneven surfaces