Made in USA This item replaces the A50LI and A50LIL. Controlling all types of animals, even predators. This heavy duty low impedance fence charger can be used on all types of fences including high tensile, polywire and polytape. This fence charger helps control animals even if your fence line has a lot of weeds. Our Zareba® 50 Mile AC Low Impedence Fence Charger can be used to help control all types of animals, even predators. It powers all types of fences, including high tensile, poly wire and poly tape in heavy weed conditions. This AC-powered charger maintains maximum energy on the fence and delivers safe, effective high voltage shocks with digital timing. Features include fuseless design, moisture-resistant internal components, an indicator light that shows charger is working, and a rugged, weather-resistant case. 2.8 stored joules of power; 2 joule output at 75 ohms; 115 volt, 60 cycle; pulsed output (1-second intervals). Uses 10 to 18 gauge wire. UL listed. Comes with a 2-yr warranty that includes damage caused by lightning. 3 year warranty when registered on-line with proof of purchase. If a fence is failing to deliver a significant shock, it may be that you need to rethink your ground rod system by adding more rods or adjusting their placement. When it comes to keeping an electric fence performing well, the soil conditions are going to be a key factor. If the soil is too dry, too sandy or too cold, the fence may not operate at its peak and, in some cases, it may not operate at all. Fence problems related to improper or ineffective grounding are common, and by working around soil conditions you may eliminate any fence-performance issues as well.