Smart fully sealed charge controller converts solar power and delivers max. 5A in full sun OR power pulses in cloudy weather, to your 12V lead-acid (STD, AGM, GEL) or deep cycle battery. The smart OptiMate Solar system includes a 60 Watt weatherproof solar panel and a smart OptiMate Solar combination charger-monitor controller, that charges & maintains a 12V battery during the day and monitors and displays the battery state of charge at night. The solar panel's wide spectrum poly-crystalline technology generates power even in low light, that the OptiMate controller converts into high current pulses more effective for charging and maintenance of a 12V battery. At night the smart controller turns into a battery monitor, providing battery information every 3 seconds on the easy to read 3 LED panel.