Patriot P20 Energizer
Use this 2 joule low-impedance charger for medium-length temporary and semi-permanent fences for livestock and wildlife. Also for medium-length permanent fences for cattle and horses.
Plug unit into a 110V wall outlet, or connect to an external 12V battery. (Connectors included for both. See Specifications below.)
Don't forget to order a Wiring Harness! This energizer does not include a Wiring Harness (sold below), which connects leads and clips to attach to the fence and ground rod.
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Instructions/Diagrams:
Instruction Manual 
Common Uses
Specs
| Energizer Only | Plug-in Kit* | Battery Kit* | |
|---|---|---|---|
| Item # | 115020 | 201981 | 201979 |
| Patriot 20 Energizer | ✔ | ✔ | ✔ |
| (2) Ground Rods (galvanized) | 3 ft | 3 ft | |
| (2) Ground Rod Clamps | ✔ | ||
| (2) Hanging Nuts | ✔ | ||
| MaxiShock Insulated Cable | 100' roll | ||
| Wiring Harness | ✔ | 110V AC Adapter | ✔ | ✔ | ✔ |
| DC Battery Leads | ✔ | ✔ | ✔ |
| Digital Tester | ✔ | ✔ |
Should Power...**
- 2.5 miles of 3 strand cattle fence
- 1 mile of a 5-7 strand sheep fence
- 16 of the 164' sheep/goat nets
- Up to 8 of the 164' poultry nets
Miscellaneous
- Requires a grounding system. Inadequate grounding is the most common failure in an electric fence system. We recommend 6 ft. of grounding (Two 3 ft ground rods are included in the kit) for this energizer.
- 12V DC draw: 163 mA/hr. With this energizer a 12V 100 ampere hour, deep cycle battery will last approximately 15 days* on a clean or a weedy fence. *Assumes being drawn down to 40% between recharges.
- To operate as a solar energizer, run the unit as a battery unit (DC) and attach a solar panel to charge the battery. (20-40 watt panel recommended.)
Energizer Specifications
- 2.00 released joules
- 2.00 joules in moist soils
- 0.40 joules in dry soils
- Pulses per minute: 40
- 12V DC draw: 163 mA/hr
- 110V draw is 4.5 watt per hour
- Impedance type: Low – pulse type
- Input: AC/DC
- 110V Adapter/Charger
- Operates the energizer as a 110V unit when near a wall outlet
- 12V DC Leads
- To connect energizer to an external battery (batteries sold separately)
Benefits
Installation
To use the energizer as a plug-in unit:
The energizer can be mounted either inside or outside of a building, but not where there is risk of fire. The energizer must be mounted vertically. Protect the energizer from direct rainfall.- Connect an MaxiShock 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 black clip to the ground terminal of the energizer. Attach black alligator clip to the ground rod(s).
- Connect the energizer to the battery.
- 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-tac sound will be heard. If the indicator light doesn't flash, then the unit/battery should be checked.
Troubleshooting
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 energizer is at fault:
- Test the battery with a low-voltage tester; recharge if lower than 12.2 volts
- Check the grounding system
If the fence is at fault:
- Conductors touching another wire, steel post or the soil
- Broken or damaged insulators
Precautions
- Make sure the power is turned off before working on the fence or the energizer.
- Make sure the fence line is clear of grass and debris that may lower the fence’s voltage.
- Ensure the solar panel is facing due south and avoid placing the unit where it may be covered by shadows from trees, bushes or tall grass.
- Regularly remove all debris from the solar panel.
- Batteries that are less than 40% charged may become damaged. Batteries MUST remain fully charged in freezing conditions.
- When using a 12V deep cycle battery, there is no case to protect the battery, so the battery will be exposed to the elements and risk of theft.
- This unit is not modular, therefore it is not repairable.
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.
Warranty
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.
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Fence Connectors and Accessories
Ring Terminal Harness
Item #130800 -Wiring harness fits most electric fence energizers. Alligator clips for attaching to fence (positive) and ground rod (negative). Ring or bare wire ends.
$9.00 -
Energizer Solar Panels and Accessories
Sealed Lead Acid Battery, 12V, 18 amp hr
Item #121618 -12V sealed lead acid (SLA) batteries for use with electric fence energizers. 500-1000 rechargeable cycles. AGM construction.
$47.00 -
Fence Connectors and Accessories
Ground Rod, Galvanized, 6'
Item #151000 -Complete the circuit of your electric fence with galvanized grounds. No corrosion unlike copper rods.
$18.00 -
Fence Connectors and Accessories
Stainless Steel Clamp
Item #151800 -Stainless steel hose clamp. Firmly holds negative leads from the energizer to the ground rod.
$1.30 -
Energizer Solar Panels and Accessories
Solar Panel, 20 watt
Item #146200 -High-efficiency glass solar panels. Choose from 10W up to 90 watts. Monocrystalline photovoltaic cells are ideal for charging 12V batteries.
$89.00 -
Fencing
Solar Panel Brackets for 10, 20 & 30 watt panels
Item #147510 -Holds solar panels of nearly any size (10 to 90 watts) at 45˚ (for maximum solar response in most conditions) on top of the energizer/battery support box.
$27.50 -
Energizer Solar Panels and Accessories
Solar Panel, 30 watt
Item #146800 -High-efficiency glass solar panels. Choose from 10W up to 90 watts. Monocrystalline photovoltaic cells are ideal for charging 12V batteries.
$140.00 -
Energizer Solar Panels and Accessories
Energizer Support Box
Item #134200 -Build your own portable electric fence system for rotational grazing. Durable galvanized housing for energizer and battery.
$68.00 -
Fence Connectors and Accessories
Fence & Battery Digital Tester
Item #200010 -All-in-one fence tester checks the voltage of energizers, fences and 12V batteries. Simplify electric fence troubleshooting with one device!
$24.00 -
Fencing
Warning Sign
Item #346000 -Let passersby know that your fences are electrified with this easy-to-read electric fence warning sign.
$1.60
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Energizer Solar Panels and Accessories
Replacement 12V Battery Leads for Patriot Energizers
Item #115002 -Attaches to Patriot energizers for battery power. Use 12V deep cycle batteries for best performance and longevity.
$29.79 -
Energizer Solar Panels and Accessories
Replacement 120V to 12V adaptor
Item #807426 -Replacement 110V adaptor for Patriot and Speedrite brand electric fence energizers, chargers and fencers.
$24.83
Write a Review
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Terri G from Ohio
It died after 9 months of use. I would not recommend.
Rod N from New York
I intended to use it with poultry netting. Found out the hard way that it is far to weak.
Valerie G from Virginia
I will only purchase Patriot fence chargers. This is my fourth one (multiple fences in different areas) and they are a great value for the money. HIGHLY recommend.
McKenzie K from California
I had an inexpensive energizer from the local feed store. After a few months my three goats started literally walking over the fence (it is one of those portable, flexible pole types)! Partly my fault because I accidentally left the fence off for two days and they got a lot of practice walking over it quickly, so even when I turned it back on, they were willing to endure the very mild shock. Digital fence gauge showed around 4kV near the charger. But when I put the P20 on there, oh boy, now they stay inside again. Digital fence gauge shows over 10 kV near the charger with the P20. And it is the same fence in the same place with the same wires and ground system. Also, my poor puppy wasn't expecting such a bad shock either. He is a spirited dog, though and he is fine now. He does make a point of keeping a couple of inches of clearance between his nose and the fence though.
The shock is powerful enough that I don't think the goats will be willing to risk finding out if the fence is on (they used to do this sometimes), so even if I accidentally leave it off again, I bet the goats will stay inside.
Laura W
The P20 is an economical and long lasting energizer. I accidentally left one out this past winter (in Wisconsin) and it is working just fine this spring. I have 6 of them now and use them on the sheep's electronet fences and the cattle's 3 wire fences.
