9J Electric Fence Charger Energizer, 9 Joules 400 Acres, AC DC 2 in 1 Powered Supply, Input 12V Output 12KV, with Display Alarm and Remote, Deter Predators, Contain Cattle Cow and Livestock

Very nice and powerful electric fence charger, we installed in 2025 for 10 acres farm lane and it working great so far, it keeps cow away from the fence… I’ll buy it again, I recommend.. make sure you install at least 15 feet of ground line with bar at lest 5 feet deep in the ground..

This is the best ever, if you want a good electric fence charger this is the one. I have it running 24/7 for couple of months, sometimes I touched it by mistake but I can tell you, you will let go quick, love it thank you

Worked fine initially, but suddenly died for no reason ​I was really hoping this electric fence charger would be a reliable solution, but it unexpectedly stopped working out of nowhere. ​It was installed correctly according to all manufacturer instructions with proper grounding and electrical hookups. It was kept completely dry, protected from the elements, and was never exposed to water. Despite proper maintenance and setup, the unit just completely quit pulsing/functioning without any obvious cause or warning. ​I also am not able to reached out to customer support to see if they can troubleshoot or honor a warranty replacement it is frustrating, I definitely as of right now, I cannot recommend this unit if you need dependable power for your fence.

It worked great and taught our houdini horse a lesson... until it stopped working. The power light flickers on but nothing else works anymore. Just a month and a half after installing it. I can't find any support for this product or any way to contact the seller for a replacement. 1 star for the lack of support.

This KICKS like an angry draft horse! Oh man. I have one stubborn escape artist dog who showed all of my other dogs how to climb over my neighbor's fence and run around the neighborhood. I did not have this issue until one night a storm blew down the neighbor's fence. Ever since then, they found out that there's an entire world on the other side, and the one became hell bent / obsessed with escaping. We repaired the fence, and all of them got out the very next day. We reinforced the fence further, and again they got out. We put a freaking metal lid (5 feet of horizontal metal bars at the top of the fence) and they still got out (how? Because the one is a Houdini, and once he breaks through, all the other ones get hyped up and follow him! Even if they hurt themselves in the process.) We even put an extra fence up on the interior of the main fence, and he ripped that down and still got out. It was to the point where he was cutting himself and breaking his teeth just to figure out how to undo whatever new obstacle we put up. Because of all this mayhem, one of my dogs ended up getting hit by a car (he is okay but it was EXTREMELY SCARY and cost me thousands at the emergency vet), and another got kidnapped by a self-proclaimed "rescue do-gooder" who REFUSED to give him back. We had to get the police involved, and they almost had to break down his door. Another went MIA for an entire week; we had the whole neighborhood looking for him. I was so scared to let any of them out at all, but how on earth was I supposed to keep energetic intelligent working breed dogs inside the house 24/7? They need to poop and pee, and they need to run and play! Every time I'd let my dogs out to pee, within 30 seconds they would be climbing over, digging under, or tearing straight though the fence, leaping over my neighbor's tiny gate, and running in all directions. When my husband found me camped out in my neighbor's yard in the rain, waiting to jump out and yell at them when they started to escape, he said enough is enough. I knew the only thing I could do at that point was to order an electric fence. I knew that something weak was not going to stop them - they run RIGHT through invisible fencing at the highest setting and don't even flinch. Most of the electric fence boxes available on Amazon are weak, and I already knew they'd barely even tickle them. My dogs have thick skin, and even thicker skulls. VERY stubborn, VERY determined, and nearly impervious to pain. The night I installed this zapper box, I waited by the back door.. and sure enough, within a minute of letting them out, I heard a LOUD "YERP!!!!!!!" and I watched my Houdini boy projectile himself straight up and away from the fence like he was shot out of a cannon. Every single one of them tried it. They looked like they had seen a ghost. My Houdini tried it two more times after that in different spots, I suppose to make sure he wasn't dreaming. They all were sent airborne every time. Yes, yes, and yes! SUCCESS! Now my dogs are SAFE from their own devices! After a month of turning this on religiously every time they went out, they eventually stopped going near the fence completely. We stopped having to turn it on. We rarely ever turn it on now.. they respect the crap out of that fence! An added bonus is that I no longer have to worry about them trying to taunt the neighbor's dog ever again. The neighbors have a tiny little ankle biter and my dogs are huge powerhouses that were bred to hunt and kill wild boar.. so it always made me nervous seeing them taunt each other through the fence. My boys are friendly and have never had any inappropriate interactions with people or other dogs, but I know that they could quite literally eat my neighbor's dog in a split second if they really wanted to.