30 Miles 8W Solar Powered Electric Fence Charger Portable Solar Fence Controller Charger for Farm Item Type: Solar Powered Fence Controller Material: ABS Product Size: Approx. 36.5 x 33.5 cm / 14.4 x 13.2 in Approx. 26.5 x 18 cm / 10.4 x 7.1 in Power Output At 500 Ohms: 1J Output Power Vacuum: 1.3J Effective Area: 100 acres Effective Length: 30 miles Solar Power Consumption: 47mA Waterproof Grade: IP65 for outdoor use Monocrystalline Silicon Solar Panel Maximum Power (Pmax): 8W Maximum Power Current (Imp): 0.44A Short Circuit Current (Isc): 0.47A Power Cupply Battery: DC 12V, NP12-8AH battery (Battery Not Included) Days Run Without Sunlight: 3 weeks Application: Fence In the battery (if necessary), the connections must be made as follows: 1. Connect the positive (red) to the positive (+) terminal on the battery 2. Connect the negative (black) to the negative (-) terminal on the battery Standby Mode: When the intelligent battery management function puts the unit into standby mode, the battery charge is below the "safe operating level". In standby mode, the unit continues, but it does not provide pulses to the electric fence. When the solar panel is charged, the unit will resume delivering pulsed batteries above a "safe operating level". When operation resumes, the battery charge level is still low, so the device will provide pulses every 3 seconds. Once the battery reaches normal charge Level: Pulses revert to one pulse every 1.5 seconds Weight: Approx. 3600g / 127oz