Parmak MAG12-UO 12-Volt Magnum Low Impedance Battery Operated 30-Mile Range Electric Fence Charger, Multi, Twin

Good price, great quality, works great

Update (November 2024): I ordered another of these fence chargers on October 24, but it was never delivered to me. An email message on November 4 indicated that the package was returned by the carrier and that a refund would be issued. No other explanation was provided for the failure to fulfill this order.This product is very good, but I would recommend ordering it from another source.I purchased one of these fence chargers late in 2018, and have been using it ever since to power around 4000 feet of fence with good results. We have a bull who was leaning on our barbed wire fence and even sticking his head through to "argue" with the neighbor's bull, but that all stopped after we installed a single strand of hot wire just inside the barbed wire fence.I really like the gauge on the front of case that provides an indication of the status of the system. From time to time the hot wire will get tangled with the barbed wire fence when deer jump over, and the gauge shows when the electric fence has gotten grounded on the metal fence. I simply locate the point where the hot wire is hung up on the barbed wire and pull it off. Having the hot wire grounded in this way does not appear to harm the fence charger at all.I used a 12-volt battery to power this fence charger until a couple of years ago, and now it is powered by a 12-volt power supply that is plugged into a 120-volt outlet. Both methods work well, but it was inconvenient to keep the battery charged up all the time.I drove in one 8-foot ground rod next to the fence charger and that seems to be working well enough for the grounding connection. Many recommendations call for three ground rods spaced 10 feet apart, but we're getting by with only one so far.

I was looking for a DC charger that would keep the deer out of my garden. I have no AC power in that area. Before I purchased this charger I had tried several others but they were to weak. This one looked to have the power but had complaints about moisture and corrosion on the internal electronics. I ordered two chargers and when they arrived I noted that they had good strong cases.To guard against internal moisture I took some form-a-gasket used for autos and sealed the seams on the case as shown in the photo. I did not open the case. I just ran a bead and used my finger to spread it for coverage. I am on my second year and have had no issues with ether charger. I do have them simi covered from direct rain but they can get some moisture on them. They give a strong jolt and I have had no issues with deer in my gardens. I would buy again.I use the fiberglass electric fence rods from Tractor Supply to run the wire for the fence. For the battery I purchased a Marine/RV for power. They can be discharged further down that a normal car battery without harm.5-9-2024 UPDATE Both units still fully operational with no issues.

Moisture killed her, but its under warranty.The charger sits on a south facing poll, just under the solar panel and above the battery tray (single old cheap 12v from 'that w store'). I check it almost every feeding time, didn't work the last couple of days - but almost no sun for 3 days and lots of rain. Today it wasn't working still, battery shows full, so got to tinkering with it and got some water out of the cord that goes into the unit. I figure it has soaked up water after this long.Because I have one stupid and stubborn horse I quick ordered another, so will have one on the shelf (hopefully before she figures out the wire is not hot).As far as the wire working, see stupid and stubborn horse comment above; she would ignore the 0.5 joule chargers, and the 1.2 if she was in a bad mood (really wanted to take a beating) but - she does not ignore this thing. I normally use 3/8 in rubber hose for insulators, but this will burn through that hose; I have to wrap it in tape too. My jacket touched the wire one day, was damp out, and it felt like a mule had kicked me (through the hem of the jacket, not direct contact).NOTE: the new (and replacement) will get a bead of non-dry silicone on the box seam and terminals as a preventative measure.