motorhomes RV 100W solar power system duo-battery charging solar controller, For RVs,Caravans,and boats motorhomes RV100W solar power system with Semi flexible panel1. ... are two independent batteries for instance a starter battery and a leisure battery.2.Optional LCD Remote meter, you can ... or 24V system.4.The Charging percentages for each battery can be set manually if required.5.PWM charging, ...