Maximize Solar Efficiency with the Genasun GV-10 Lead-Acid MPPT Solar Charge Controller Optimized for 140W Panels and More The Genasun GV-10 is engineered to extract the maximum usable energy from your 140W solar panel and can take up to approximately 200W solar panels if within the current and voltage limits. Featuring Continuous Maximum Power Point Tracking and minimal night consumption of...