Our Fi-Shock® 10 Mile Solar Low Impedance Fence Charger can be used to control most livestock, short haired animals and small animals. Use in moderate, dry weed conditions. Battery is included. Once battery is fully charged it can operate up to 2 weeks with no sun. 0.33 stored joules, 0.15 joule output. 6 volt solar battery. Output voltage no load is 7500 volts. Digital timing. Solar-region setting for optimum performance and battery life.