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IntelliShock 20B Battery Energizer

While Supplies Last. All sales are final, no returns.

This is the 20B energizer only. Batteries and solar panels sold separately. To order, see accessories tab below.

Has few equals for ease of use for temporary livestock fences and electrified netting for sheep, goats and furry "critters." Wide Impedance.

Use a 12v sealed lead acid battery or an EzePower 9v dry battery. Both fit inside the case. (Leads for 12v battery are extra.) Peak output of 0.27 joules (with 12 volt battery).

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117310 IntelliShock 20B Battery Energizer While supplies last! 0.00 $180.00

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Click Below to View Instructions/Diagrams

Installation Instructions [521 KB]
Installation & Warranty [313 KB]

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Common Uses

A battery fence energizer that is used for portable fence systems to keep in sheep, goats, cattle, horses and poultry.

Protects livestock from coyotes, fox and raccoons. Keeps bear from destroying bee hives.

Used around gardens and orchards to keep out rabbits, deer and other wildlife.

To use as a solar unit, purchase solar panel kit under accessories above.



  • Note: 12v, 12 amp hr and EzePower batteries are the only batteries that will fit inside the 20B case. All others will work, but have to be used externally.
  • .28 stored joules
  • .27 released joules
  • .26 joules output in moist soils
  • .27 joules in dry soils


  • Draws 10 mA per hour on a weed free fence. Draws 30 mA per hour on a weedy fence.
  • A 12v 100 ampere hour battery will last approximately 250* days on a clean fence and 75* days on a weedy fence. *Assumes being drawn down to 40% between recharges.
  • Load-sensing circuitry that reduces the energy drain from the battery by up to 70% when the air is dry and the fence is clean of weeds.
  • LED light indicates if fence voltage is low.
  • LED light indicates if battery is adequately charged or not.
  • Sits on its own support stake. Less obvious and less prone to theft.
  • 52 pulses per minute.
  • Support stake (13" long) doubles as a ground rod.
  • Dry cell battery life will double by adding a solar panel to it.
  • Includes wires for connecting to the fence and ground stake.

Should Power

  • 3000' of multi-strand fence
  • 4 164' sheep/goat nets
  • 2 of the 164' poultry nets.
  • All distances are dependent on amount of grass/weed load on the fence.

Can be used as a solar energizer

  • See options under accessories tab above.

NOTE: Batteries, ground rods, support boxes and solar panels sold separately. To order, see accessories tab above.


  • Portable, lightweight and easy to move.
  • User friendly cases.
  • Versatile. Can be used with a 9v dry cell battery or a 12v deep cycle battery, with or without a solar panel.
  • True wide-impedance output curve. Wide-impedance units perform better over a wider range of fence conditions and conductors than standard low-impedance units. Areas where wide-impedance units excel are: high resistance conductors (stainless steel polywire/hot tape/electrified netting); minimal ground rods; livestock or wildlife with dry skin or hair (poultry, deer, goats); and very dry soils. Safe to use with all polywires, polyropes, tapes and electrified nets.


  1. Connect red lead's bare wire end to fence terminal and clip other end of lead to fence
  2. Connect black lead's bare wire end to ground terminal and clip other end of lead to ground rod.
  3. Push black on/off button to turn on.
  4. Test fence.


  • Make sure the energizer is turned off before working on the fence or the energizer.
  • Use on size appropriate fences.
  • Note: 12v, 12 amp hr and EzePower batteries are the only batteries that will fit inside the 20B case. All others will work, but have to be used externally.


To determine if the fault is with the fence or the energizer...

  1. Test the energizer first
  2. Turn off energizer.
  3. Disconnect ground wire and the fence wire.
  4. Turn energizer back on.
  5. With fence tester, put the ground probe (or clamp) to the ground terminal on the energizer and the metal loop (or positive clamp) at the top of the tester to the fence/positive terminal. The reading you get tells you how well the energizer is working without any other variables. If there is a very low voltage (under 1500v) or no voltage, then the energizer may have a problem. If the voltage is high (greater than 3000v) then the trouble lies with your fence. Most energizers put out between 5000v and 8000v when there is no load (i.e. no fence hooked up).

If the energizer is faulty and it's a battery unit you need to learn if the battery or the energizer is the problem...

To test the battery on the IntelliShock 20B: Press battery check light. If you get a steady green light the battery if fine. If you get a flashing green light, the battery needs to be replaced within 2 days. If there is no green light, battery capacity is too low to operate energizer.

If the fence is at fault, then you must find the fault(s) and fix them. Here's how to start this process:
If you have a Fault Finder you can simply touch the fence with the Fault Finder at various points along the electric fence(s). The Fault Finder will tell you at each point which direction to go in to locate the problem. Move in that direction testing as you go and you will arrive at the problem. Note: The directional arrow of the Fault Finder is not accurate with net.

If you lack a Fault Finder…

  1. Walk or drive along the fence looking for any point in which the energized wires touch the soil, a steel post or a steel wire. On HT wire fences, check the wires at braces to see if they are touching a hot wire. On netting, look for a hot wire touching the metal stake at the bottom of the plastic posts. Also look for damaged insulators.
  2. If the fence can be separated into several parts (by switches or by disconnecting parts of it), you can locate the problem by beginning at the far end and then progressively turn off or disconnect the sections of fence. When the voltage on the remaining fence rises sharply, you've located the section(s) that's causing the problems.
  3. The alternative to (2.) is to begin at the fencer and progressively turn on sections of the fence. When the voltage suddenly drops you can assume that the problem is in the section most recently connected.


Our unique 2-Year Warranty
If an energizer fails within 2 years from the purchase, Premier will replace the module/unit at our cost (unless the reason for its failure is customer abuse or neglect). Your credit card will be charged for the replacement but you will receive full credit when the failed item is back at Premier. Your only cost is shipping the failed item to us. If the original energizer is over 2 years old, we will repair and/or replace it, but you pay for the repair cost and freight.

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.
Item # 121500 - In Stock
Non-rechargeable disposable batteries.
Item # 121600 - In Stock
For all 12v energizers. Durable, safe rechargeable battery.
Item # 133500 - In Stock
3 in 1 tester for fence voltage, intensity of current and fault finder. Indicates which direction a fault (leak) in your fence is located.
Average Rating: 4.3 out of 5
Number of Reviews: 6 customers reviewed this product.

Write a Review

For a few rolls of net in wet or dry conditions we would use this energizer. We like the wide impedance capability and when accompanied with a solar panel the battery can really last.
Date: April 29, 2013
Cynthia N from Northern Illinois
Would you recommend this product? Yes
I bought this unit with a deep cycle battery and solar panel 5 years ago. I thought it was outrageously expensive, but reliability was important and Premier has very good quality products. Five years later and I can say the unit has been worth every penny. Extremely reliable. I have never replaced the battery. It has been in continuous use. I also own 4 Zareba units bought from the local farm supply...I hate every last one of them and wish I had spent my money on another Intellishock unit instead.
Date: July 13, 2012
Christopher R from PA, Pocono
A big problem using this product with a solar panel is the battery life. I've own this product for 3 years and I'm now on my third battery. You must make sure the battery never goes below 40%. I haven't found replacement batteries locally to fit inside the intellishock. The price of Batteries plus shipping add up!
Date: June 7, 2012
Melissa W from Iowa
Would you recommend this product? Yes
Easy to use, functional, portable, and durable. This is a great product.
Date: February 20, 2012
Sarah H from Ohio
Would you recommend this product? Yes
I love the ease it sets up. Very reliable. I would recommend.
Date: June 9, 2011
George W from Wisconsin
Would you recommend this product? Yes
Good product, I just wish they told you right away that you are going to need two fences if you are rotationally grazing.
Date: November 26, 2010
Lynda W
Would you recommend this product? Yes
This is a quick, portable, and reliable solution to daily fencing moves. Initially, I purchased the non-rechargable batteries which worked fine and were long lasting but I was concerned about the disposal issues so I purchased the solar panel and rechargable battery and am hoping for the same reliable performance.
Date: November 15, 2010
Mary Sue S
Would you recommend this product? Yes
We took this hunting in the mountains to keep our two mules in. They are used to this electrified rope fence at home. It worked perfectly. We hooked up a small solar panel to keep the battery up - but that was probably not necessary. We were in 0-5 degree overnight conditions - no problems at all.
Date: March 17, 2010
Larry J
Would you recommend this product? Yes
Works very well. Ours has been out in the weather for a couple of years now. I built it a little cart with a solar panel and a battery.
Date: February 27, 2010
Jerry L
Would you recommend this product? Yes
I have used the 20B for several years with batteries and then added a solar panel. This is by far the best battery and solar/battery unit I have ever used. It's rugged and reliable and it's wide impedance capability allows it to provide high shock strength even with dry ground conditions. I would recommend it to anybody who needs to have electrified fence where there is no power supply