Catalog: Electric Fence Chargers and Accessories
ELECTRIC FENCE CHARGERS
To reach any of the chargers (also called energizers) that are offered on this site, use the 4-line menu above. To learn more about the kinds of chargers needed to exclude deer, read on.
AC-powered Chargers: Use one of these if you can reach from your nearest AC outlet to the fence with any practical length (up to 250 feet) of undergate and hookup wire. AC chargers are the gold standard for fence chargers, being less trouble than the battery-powered types (which need periodic recharging) and less expensive than the solar-powered models. So by all means use one if you can.
Battery-powered Chargers: Get one of these if you do not mind recharging batteries. You will need one or two boat or golf cart (deep cycle) batteries (not a car battery) and a battery re-charger. Figure on needing about 80 amp hours of battery capacity per joule of charger power to operate the charger for a month.
Solar-powered Chargers: These are expensive, but if AC power is not available they're worth the cost. We do offer a 0.5 joule charger, but you should get this only if you don't mind having your deer fence under-powered. As a general rule, plan on getting a 1-joule solar assembly for short fences, a 2-joule assembly for long fences, and a 3-joule assembly for difficult situations. Please note that some of our solar-powered assemblies come with a battery and case while others do not, so that in these latter cases a battery will need to be obtained separately.
Charger Accessories: We offer several kinds of charger accessories: solar panels, batteries, and a battery case suited to solar-powered charger assemblies; a battery re-charger used to recharge a battery-powered charger's battery when there is no solar panel; lightning protection devices to help the charger avoid lightning damage; and a weed burden protector that delays arrival of the charge at the fence's bottom wire--thereby keeping the rest of the fence charged if weeds are leaning on the bottom wire.
More Information: The key to any electric fence charger's success is voltage. Volts are the electrical equivalent of pressure. To reliably shock a deer on the nose or tongue with a baited electric fence you need 2.5 kilovolts. And to reliably shock it through its coat with an un-baited fence you need about 4 kilovolts. Various things (poor connections, resistance within your polywire, limited soil moisture, weeds or branches leaning on the fence) can reduce the effective voltage. So besides needing an electric fence tester (not an ordinary voltmeter) to confirm you have enough voltage on the line, you need an electric fence charger with 1 joule or more of power--enough to keep the voltage high and provide a jolt strong enough to impress the deer. If your fence is short and problems passing the charge along the wires seem minimal, a 1-joule charger is likely to do the trick. However, if the fence is long, especially if there are lots of connections, or you are using an un-baited fence, or there are any of various other problems (dry ground, fallen branches, lots of deer, or a really attractive food source being protected) a 2 or 3 joule charger may be needed. In most cases, unless a lot of weeds are likely to be leaning on a long fence, there is usually no need for anything stronger than 3 joules.