... ,Imp=4.36A;10years 90% 20years 80%5Controller12V/10A1 short-circuit protection, reverse protection,overload5-81Battery12V/100AH1 Fully-sealed and maintenance ... ,cloudy days2.Systems include: solar panels, controllers, batteries ,inverter3.short-circuit protection. Overload, reverse protection,4.Sunshine condition: sunshine 10 hours ... updated 2011-12-24 75W Solar Power System for Home Using