... , trenching, or metering No power outagesNo monthly electric bills Battery backup for cloudy or rainy days Easy to install with ... dusk to dawn, split night, full power, diming. Gel type sealed battery, long life with charging & discharging. No need maintenance. Durable pole ... Controller: 2 years warranty, with lifespan over 8 years. Gel Battery: 2 years warranty, with lifespan about 5~7 years. Solar ...