PrimaShock® 4 Fence Energizers & Kits
Premier’s new budget-friendly PrimaShock™ electric fence energizers combine high joule output with dual power source options (battery or plug-in). They really impressed us during testing trials on employee farms.
- Low cost per joule: 4.3J output
- Can be used as a plug-in (AC) energizer, or as a battery (DC) energizer
- Digital LCD shows energizer output voltage, pulses per second and battery voltage (when used as a DC unit.)
- Day/night and battery saving modes
|Energizer Only||Plug-in Kit*||Battery Kit*|
|PrimaShock™ 4 Energizer||✔||✔||✔|
|(2) Ground Rods (galvanized)||6 ft||6 ft|
|(2) Ground Rod Clamps||✔||✔|
|MaxiShock Insulated Cable||100' roll||10' roll|
|Digital Tester for Fences & Batteries||✔||✔|
- 4.3 released joules
- 4.3 joules in moist soils
- 0.60 joules in dry soils
- 4 miles of 3 strand cattle fence
- 2 miles of a 5-7 strand sheep fence
- 23 rolls of 164' sheep/goat nets
- 12 rolls of 164' poultry nets
- Requires a grounding system. Inadequate grounding is the most common failure in an electric fence system. We recommend 12 ft. of grounding for this energizer.
- 12V DC draw: 100-200 mA/hr
- 110V draw is 2.7 watt per hour
- 12V battery draw is 200 milliampere (mA) per hour. With this energizer, a 12V, 100 ampere hour deep-cycle battery will last 13 days. (Assumes 60% drawn down between charges.)
- To operate as a solar energizer, run the unit as a battery unit (DC) and attach a solar panel to charge the battery. (20–60 watt panel recommended.)
- Dimensions: 10"W x 8"H x 4"D
- Integrated on/off switch
- LCD display for output voltage and battery condition. (Replace or charge battery when battery voltage drops below 12.2V)
- 110V plug-in adapter (6' cord)
- 12V battery adapter. (Batteries sold separately.)
- A wiring harness is included to connect energizer to fence and energizer to ground rod.
- 5 operating modes:
- Full Energy—pulses every 1.2 seconds
- Reduced Energy—output power is reduced 25%, energizer pulses every 1.2 seconds
- Short-day/Long-night—daytime pulse every 1.2 seconds, 2 seconds at night. Best used for day grazing with low predator pressure.
- Long-day/Short-night—daytime pulse every 2 seconds, night pulse every 1.2 seconds. Use with well-trained livestock exposed to heavy predator pressure at night.
- Battery Saving—output power reduced 25% and pulses occur every 2 seconds. Best for well-trained livestock and low predator pressure.
To use the energizer as a plug-in unit:The energizer can be mounted either inside or outside of a building. The energizer must be mounted vertically. If placing outside, protect the energizer from direct rainfall.
- Connect an insulated cable (stripped back 1–2" on ends) to the fence terminal on energizer, run the cable to the fence line and connect, or use the positive part of the wiring harness.
- Then run a second length of cable from the ground terminal (with ends stripped again) on the energizer to the ground rod(s), or use the negative part of the wiring harness.
- Secure to ground rod(s) with a clamp.
- Plug the energizer directly into an outlet and test fence. Do not use an extension cord as it may cause a decrease in voltage and expose the unit to the elements.
To use the energizer as a battery unit:
- Attach wiring harness to energizer.
- Attach the bare end of the wire with the red clip to the fence terminal of the energizer. Attach the red alligator clip to the fence.
- Attach the bare end of the wire with the green clip to the ground terminal of the energizer. Attach green alligator clip to the ground rod(s).
- Connect the energizer to the battery. (Batteries sold separately.)
- Insert battery adapter into the energizer. Attach red alligator clip from the adapter to the red “+” terminal of the battery.
- Attach black alligator clip from the adapter to the black “–” terminal of the battery.
Unit indicator light should flash and a tic-tic sound will be heard. If the indicator light doesn't flash, then the unit/battery should be checked.
To Reduce Risk & Liability
- Never place your head or upper spine near an electrified wire. Accidental head or neck contact can occur when pushing a voltage probe into the soil. Be careful when doing so to avoid head-to-wire contact!
- Never attempt to step over or climb through an energized fence of any kind.
- Never encourage anyone to touch an electric fence.
- If using the energizer as a battery unit, do not charge the battery while the energizer is connected to the battery.
Start by measuring the voltage at the end of the fence line. If the voltage is below 3000V, follow these steps to determine if the problem is with the fence, or the energizer.
Test the energizer first!
- Turn off the energizer.
- Disconnect the wires going to the fence and ground stake/rod.
- Turn the energizer back on.
- Measure the voltage on the energizer between the two terminals (positive and negative) with a digital voltmeter or other high-voltage tester. Touch one end to “-“ (earth terminal) and the other end to “+” (fence terminal). The reading tells you how well the energizer is working without any other variables.
- If the tester reads below 5000V, then the energizer (or possibly the battery) is the problem. If the voltage is above 5000V, then the trouble lies with your fence.
If the fence is at fault:
- Conductors touching another wire, steel post or the soil
- Broken or damaged insulators
Listed below are recommended optional components or related items. Your particular situation may require alternative recommendations. Please call and talk to our consultants if there are any questions at 800-282-6631.
FencingItem #147510 -
Holds solar panels of nearly any size (10 to 80 watts) at 45˚ (for maximum solar response in most conditions) on top of the energizer/battery support box.$27.50
FencingItem #147560 -
Holds solar panels of nearly any size (10 to 80 watts) at 45˚ (for maximum solar response in most conditions) on top of the energizer/battery support box.$31.50
TopItem #MA02 -
Replacement parts for PrimaShock Energizers that have worn out or broken.$1.20
Write a Review
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Mitchell D from Georgia
What a great deal on PrimaShock 4! If you are having trouble with getting the correct problem this will fix it. It will go through brush no problem! Shipping was very quick. I'm doing my buisness at Premier 1 now!
Benjamin C from California
The kit appears to be good quality. The 4 joule energizer requires 12 feet of ground rod in the ground per the operating manual but only comes with (2) 5' effective length rods. I had to order extras for dry conditions.
Josh J from Washington
Works great! Using it to run a top wire for horses about 700' of line and 3 sections of netting for my chickens. With limited sun I occasionally pull my battery in to charge it when we have to many cloudy days.
Premier 1 sells excellent products. Been using a different fence controller for the past 3 yrs that sends out 2.5J. My original set up with the battery inside the solar panel is my back up.
Roger H from Iowa
Works well, but a little bit difficult to interpret digital readout.
Wendell E from Arizona
The bottom line is that so far I am happy with the fencer for the price. I had borrowed a friend’s Stafix fencer before (same as a Speedrite I believe). I probably prefer that one slightly because it is more weatherproof, I think. Also, I prefer the light bar because it can be seen from further away than a digital readout. But those advantages are not worth the over 100 extra dollars for one with 3 joules instead of 4.
It would be nice if the PrimaShock had a true status light that could be seen from a distance. The red status light only tells you if the energizer is on an energizing mode. It does not actually indicate whether it is putting out sufficient voltage to keep animals in. But on my setup, if the digital display says less than 11 or 12 kv, I know there is a problem and it is just a matter of finding it. I also found that the manual was very bare bones and you almost need to read between the lines.
But I am very satisfied with its overall performance. It delivers over 10,000 volts. I like the option of the reduced power setting and the two terminals that give the possibility of separate fences being connected. So as long it has good life, I will be happy with my purchase.