This solar fence charger delivers a powerful 8kV pulse voltage with 0.30J output to prevent intrusion. Equipped with a 10W monocrystalline solar panel, it charges on sunny days and uses the built-in 10,400mAh lithium battery to provide up to 7 days of power during cloudy or rainy weather. | Vevor | | Solar Fence Charger, 0.3J 8 kV Solar Powered Fence Charger, 1.86 Miles Range | Orange | Best Buy