I have a similar charger that is running from a 12 volt deep cycle battery. It is charging approximately a 1/2 mile of high tensile electric fence for me. I put a battery on it after the fence was built in May, and have yet to change it or recharge it. The fence still lights all of the lights on my fence meter (6000 + volts) and the sheep and neighborhood dogs wont go near it. I accidentally bumped the hot wire the other night and understand why they leave it alone.beaglady said: