Most Powerful And Strongest Shock Collar for Dogs

If you have searched ‘strongest shock collar for dogs in the market’, chances are that you are having trouble training your dog with a cheap, low-quality e-collar.

But don’t let the title of this article put you off. Shock collars have been used by canine trainers for over 20 years.

They were initially designed to train police and military dogs who need rigorous training because their job requires it. You need immediate obedience when security is on the line.

Over time, big hunting dog breeds have been domesticated more and more. For security reasons, people have kept German Shepherds, Huskies, and Rottweilers to keep burglars out. 

Even though all dogs are man’s best friends, these breeds are more difficult to train than others.

The reason is their temperament and their large sizes. Dogs’ temperaments require more patience and rigorous training.

It is difficult for pet owners to train large dogs with a leash collar. Mostly because they tire you out and exhaust you. 

The purpose of a shock collar is to get your dog’s attention without having to pull their heads from side to side. It annoys the dog and frustrates you.

List of 10 Strongest Shock Collar for Dogs

Dogtra 1902S Waterproof Training E-CollarCheck Price
SportDOG Brand 425 Remote TrainersCheck Price
Garmin Delta Upland XCCheck Price
Remote Dog Training CollarCheck Price
PetSpy P620B Dog Training Shock CollarCheck Price
SportDOG Brand SportTrainerCheck Price
Lu&Ba Dog Training Collar with RemoteCheck Price
PATPET Dog Training Collar with RemoteCheck Price
Bousnic Dog Training Collar 2 DogsCheck Price
FunniPets Dog Training CollarCheck Price

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If you use a shock collar right, by talking to an expert, you will find out that a good quality shock collar is harmless.

There are a lot of cheap options available as well but they provide inconsistent stimulation and sometimes malfunction or misfire. 

Therefore, it is highly important that you buy a strong and sturdy shock collar to train your dog the right way.

1. Dogtra 1900S Series – Strongest Shock Collar for Dogs

Editor’s Choice

  • 127 stimulation levels
  • IPX9K waterproof,
  • 3/4-MILE RANGE
  • High-Performance Pager (HPP) mode
  • Stainless steel contact points with microbial plastic

 Check Price

The Dogtra 1900S is a versatile choice for dogs of all ages and all sizes, but it is best for large breeds. 

What makes this collar brand special is that it is very durable and reliable but comes with a heavy price tag.

Given the incredible feature it offers and considering the fact that you don’t want a shock collar to be of cheap quality, I think you can compromise on the price!

The Dogtra’s strength comes from its 127 levels of stimulation and IPX9K water resistance. With so much adjustability, you can easily find the appropriate level for your dog even if it is very small.

You can choose between ‘nick’ and ‘constant’ stimulation. The constant one provides a 12-second shock that no dog can ignore. This is one of the reasons why Dogtra is among the strongest shock collars!

Both the receiver and collar and IPX9K are waterproof and tested to withstand extreme weather conditions. It is built for hunting and gives you a ¾ mile range to take your dogs with you wherever you go.


  • 127 levels of stimulation
  • More than half a mile range
  • 12-sec constant stimulation, vibration, and pager mode
  • LCD screen showing training levels and battery status
  • Non-slip, easy-grip receiver
  • Ergonomic design
  • Waterproof can withstand pressure and temperature!
  • User friendly


  • Collar material is too stiff. Adjustability problems

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My recommendation: Tired of cheap shock collars that only last a year? The Dogtra brand is a one-time investment that will last you a lifetime! Whether you are a newbie or beginner, you can easily train your dog with this device.

2. SportDOG Brand 425X – Strong Shock Collar for Dogs

  • 21 levels of stimulation
  • 500-Yard range e-collar
  • Lasts 50-70 hours per charge
  • Waterproof and submersible to 25 feet using dryer technology
  • Blind Operation Design
  • Can train up to 3 d

 Check Price

Don’t want so many static levels but a collar with a good range? The SportDOG brand is offering a new 425X model with just 21 levels of nick or constant stimulation and an impressive half a mile training radius!

This collar has been specifically designed for high drive sports dogs who like to run and chase. They are tougher breeds that need rigorous training and they don’t respond well to traditional flat or choke collars. 

The SportDOG 425X is going to give you better control over training with its Blind Operation Design. Your dog won’t know the static is coming from you because you won’t need to look at the remote while operating it. 

Its powerful battery will last 50-70 hours with a single charge of 2 hours. This is so useful as most shock collar owners want to be able to take their dogs out for campings or outdoor trips and get worried that they won’t have much battery life outdoors. 

Just when you thought this collar couldn’t get any better, it offered you Dry Tek waterproof technology. This makes it submersible up to 25 feet!


  • 21 levels of nick and constant stimulation
  • 500-yard range
  • 50-70 hour battery life
  • Dry Tek technology makes the receiver and collars completely waterproof
  • Durable and reliable brand
  • Ergonomic design and BOD
  • Can train up to 3 dogs with one receiver


  • Expensive
  • No LCD screen

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My recommendation: this collar meets my criteria of durability, versatility, and strength. If you don’t like the fact that it does not have an LED screen then check out my other recommendations!

3. Garmin Delta Sport XC – Strongest Shock Collar on the market

Best In Market

  • Built-in BarkLimiter mode
  • 3/4 mile range
  • 5 training levels
  • 80 hours per charge battery life
  • LED scr

 Check Price

If you are looking for a good, strong shock collar that comes with bark correction, check out the Garmin Delta Sport XC.

It has a built-in Barklimiter mode which can be used separately. The Garmin Delta Sport is the first device to use innovative bark correction technology and bark detection. 

It has an auto-rise feature that will automatically switch to the next level of correction according to the rising volume of your dog’s barking.

The 5 training configurations and 36 levels of stimulation rank it among the strongest shock collars in the market.

Other special features include a LED screen which will easily let you switch between different levels and modes of training. The IPX7 waterproof receiver and collar make it a durable device to use outdoors with a range of ¾ miles.

It is the only device that claims to offer 80-hour long life after just 2 hours of one-time recharge. You can rest assured that you won’t need to waste your time constantly plugging in the device after every few hours!


  • 80-hour long battery life
  • 5 training modes
  • 36 levels of stimulation
  • Bark Limiter
  • IPX7 waterproof
  • ¾ mile range
  • Ergonomic design
  • Can train multiple dogs


  • Very expensive

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My recommendation: what I like most about this collar is that it offers the BarkLimiter feature and it has a very good battery life.

4. Pet Resolve Collar – Strongest Anti-bark Collar For Dogs

Bark Collar

  • Anti-Bark feature
  • Night light on the collar
  • ¾ mile range
  • No standby mode
  • Fully waterpr

 Check Price

With the Pet Resolve e-collar, you can train up to 3 dogs at an amazingly affordable price

It has a super long 1200-meter range and 10 variable levels of continuous or momentary shock to allow for the safe and efficient training of your dogs!

The Pet Resolve Dog Collar comes with an anti-bark feature and night light feature. The Anti-bark mode produces a warning beep followed by the static of a preset level. This correction is automatic in response to the dog barking.

Pet Resolve also offers you a solution if you don’t want the shock mode for the collar. Just simply use the plastic prongs and turn it into vibration and beep-only mode instead!

It also comes with a free Clicker and dog training whistle which is super cute!


  • Affordable
  • Offers 2cm long extra prongs for dogs with thicker fur.
  • No standby mode
  • Its hunting standard makes it suitable for use in harsh environments
  • you can train up to 3 dogs with one remote!
  • LED night light feature
  • Free clicker and dog training whistle
  • 2-year warranty


  • The shock levels might be too low for some dogs
  • The controller is too big to hold in hand

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My recommendation: what I like about this device is that the remote has easy-to-understand buttons so anyone can operate it. I also like the night light feature and I think it is pretty unique!

5. PetSpy P620B – Cheap Strongest Shock Collar


  • 3 training modes with 16 adjustable levels
  • 2 receivers with one remote
  • 600-mile range
  • Blind Operation Design
  • Fully Waterpr

 Check Price

What stands out with this collar is that the remote is very easy to operate. The Blind Operation Design allows you to easily distinguish between different modes of training and switch between the two dogs. 

The two collars come in different colors. Both are made of durable material. It gives an impressive 600-mile range and 16 adjustable levels of stimulation. You can easily configure it for the most passive to most of the strong dogs!

Another thing you will really appreciate about PetSpy is that they give you a free guidebook and a leash to tether to the collar. It is very important to have a backup leash attached to your regular collar to ensure safety!

Damaged device? PetSpy gives you a lifetime warranty! You can get it fixed at the nearest PetSpy franchise.


  • Easy to use
  • Easier to switch between 2 dogs
  • Comes with 2 receivers
  • Half a mile range
  • Lifetime warranty
  • Free guidebook for newbies
  • The vibration levels work almost as strong as the shock


  • Stiff collar material

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My recommendation: I really like that this collar gives you two receivers for an affordable price and great quality. It is easy to use and has a lifetime warranty.

6. SportDOG SportTrainer Dogs Collar

Shock Collar With Vibration

  • 1/2 MILE RANGE
  • WATERPROOF: Submersible to 25 feet using DryTek technology.

 Check Price

The standout feature of this collar is the OLED screen. It displays the selected dog, static stimulation level, and mode, as well as battery status.

I, for one, like to see what I am doing with such a powerful device. And if there is no screen on the remote, I would feel anxious. So if you are like me, this device is for you!

The amazing thing about an OLED screen is that it will always be sharp and clear if, for example, you are in a place where the hunting conditions aren’t ideal. 

This hunting dog shock collar comes with 10 stimulation levels and a continuous or momentary shock option. It is Dry Tek waterproof and gives you half a mile range. You can train 3 dogs with the purchase of additional collars!


  • Easy to read OLED screen
  • Suitable for multi-dog hunting situations
  • Easy to operate remotely
  • Fully waterproof
  • Trains 3 dogs
  • Great battery life
  • Can fit very small to very large dogs


  • Expensive

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My recommendation: If you live in a place where there are bad weather conditions and you want an easy-to-operate device, go for this collar!

7. Lu&Ba Dog – Strongest Shock Collar For long Distance

  • 3 training modes

 Check Price

The Lu&Ba collars are made in Germany. They are lightweight with a small remote.

The standout feature is that they offer a security lock that prevents accidental shocks and the 3 training modes have their own color reminders on the receiver.

The collars are made of nylon material and the remote is made of high-grade silicone which feels comfortable to touch.

The reason why it is on my list of powerful shock collars is that it offers an impressive range of 3000ft without obstacle in between and 500 yards without an obstacle. It is also IPX7 waterproof!

The receiver has an amazing standby time of 180 days and the battery lasts for 10-15 days after a single recharge. This makes it a powerful yet affordable option for those on a budget.


  • 16 levels of stimulation
  • Lightweight for small dogs
  • Long-lasting battery life
  • 180 hours long standby time
  • Color reminders for different modes
  • Inexpensive


  • Less durable

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My recommendation: if you are on a budget and are looking for a powerful shock collar, check out the Lu&Ba for 2 dogs!

8. PATPET Dog Training Collar with Remote

  • Control 2 collar receivers via a remote
  • IPX7 waterproof
  • Long-lasting battery
  • 3000 ft remote range
  • Blind Operation Des

 Check Price

The PATPET dog training collar claims to give you the longest standby time and long-lasting battery. The remote has 1 year of standby time and the receiver has a 100 days standby time! 

The battery lasts for 20 days in the remote and up to 10 days in the receiver!

So if you are tired of constantly having to recharge your collar, this might be the best option for you!

Another special feature is the metal sheet prongs instead of contact points that tend to rub on your dog’s neck. 

Its Blind Operation Design will allow you to distinguish the remote button just by touch. So you can focus on your command instead of always looking at the remote! Your dog won’t be able to tell where the static came from!

It has 3 training modes and 16 shock levels with a 3000 ft remote range!


  • Great battery life
  • Suitable for very small dogs
  • Durable
  • Easy to set up and use
  • Long standby mode
  • For 2 dogs
  • Automatically pairs to a channel
  • Submersible in water
  • Inexpensive


  • Bulky receiver for smaller dogs
  • The actual range is less than 3000 ft

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My recommendation: this shock collar is an inexpensive, good quality option if you have two dogs.

9. Bousnic Dog Shock Collar for 2 Dogs

  • Safe, Effective, Humane Training Modes
  • Indoor & Outdoor Versatility
  • 16 shock and 8 vibration levels
  • LCD screen
  • IP67 waterpr

 Check Price

The Bousnic Dog training collar fits dogs sized 15 lbs to 120 lbs. It has customizable vibration levels for added control and safety. The LCD screen shows you exactly what commands you are transmitting.

The prongs come in long and short lengths for dogs with different coats. It’s IP67 waterproof which means you can easily take your dog swimming with it!

It has an ergonomic design and premium look. The buttons for vibrate, beep, and shock are labeled with pictures that make it pretty clear which button does what. 

Each function button is separate which saves you from having to toggle between shock, beep, and vibration modes. One collar strap is yellow while the other is black so you can easily tell them apart.

Both the remote and the collars can be plugged in with the same charger and there are no batteries and no need for two separate chargers!



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My recommendation: The best feature about this collar is that it’s very easy to use. It’s also affordable and you can customize the vibration mode to your dog’s liking so you don’t have to use the shock mode!

10. Petrainer Dog Shock Collar

  • 100 levels of static and vibration
  • 1 level of tone
  • 1000ft range
  • IP65 Waterproof Receiver
  • 4 Training Modes: Static Shock (1-99 levels), Vibration (1-99 levels), Beep, and Light mod

 Check Price

Special features: 100 levels of static and vibration, 1 level of tone, 1000ft range, easy to understand interface, automatic standby and memory function, soft silicone covers for contact points, completely waterproof, 2 collars

Are you tired of shock collars claiming they are waterproof but turn out to be only water-resistant? Then check out the Petrainer which is IP67 waterproof!

It is a great option for those who live in very wet areas or who often go on beach trips or their pets like to swim a lot!

It is also a very powerful shock collar with 100 adjustable levels of static, offering an amazing range of 1000ft. The remote is very handy and easy to operate. It comes with silicone contact covers which are extra safe for the skin.

The standout features are the automatic standby mode and memory function. If not used for a particular length of time, the collar will automatically go on standby mode to prevent accidents. 

If you buy this collar, you get two receivers, black, and orange. It is also very affordable.


  • Suitable for dogs of any size and any temperament
  • Soft silicone covers to protect skin
  • Completely waterproof and submersible
  • 1000ft range
  • Affordable
  • Comes in two different colors


  • Goes on automatic standby mode

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My recommendation: Buy the Petrainer if you live in a wet area or often take your dogs for a swim as it is completely waterproof!

Buying Guide: Things to Consider Before Buying Strongest Shock Collar for Dogs:

Before purchasing the best and strongest dog shock collar, there are some things that you need to take into consideration. Some of the most important factors are mentioned below.

1. The Size of Your Dog

One of the most important factors you need to consider before buying a shock collar is the size of your dog. Shock collars are available in different sizes, and it is important to buy one that is suitable for your pet’s neck size.

If you buy a shock collar that is too big or too small for your dog’s neck then it may not be as effective as you would want it to be.

2. Placement of the Shock Collar

It is important that you place the shock collar at a proper location on your dog’s neck in order to make it as effective as possible.

Once you have bought the shock collar, make sure to read the instructions carefully in order to learn where the best placement for it is.

3. Level of Shock

Another important factor you need to consider before buying a dog shock collar is the level of shock that it emits.

Most shock collars come with different levels of shock, and it is important to find one that is appropriate for your dog’s temperament and size.

If you choose a shock collar that emits too much shock, it may be harmful to your pet.

4. Ease of Use

It is important that you buy a shock collar that is easy to use. This will make it easier for you to use when needed and will make it easier to increase or decrease the level of shock.

5. Ease of Battery Replacement

It is important that you buy a dog shock collar that has batteries that can be replaced easily. This is because most batteries tend to lose their power over time, and replacing them should be made as easy as possible in order for the shock collar to be effective.

The above-mentioned are some of the most important things you need to consider before buying a dog shock collar. By keeping these factors in mind, you can be sure to buy the best and strongest shock collar for your pet.


My best pick is the Dogtra 1900S. There isn’t a shock collar more powerful than the Dogtra as it offers 127 stimulation levels, nick and constant shock option, great lifetime durability, and amazing battery life.

 Another thing that stands out about it is that the Dogtra is IPX9K waterproof! This is the most advanced technology and you can easily train your dog in the rain or take it swimming!

It is a powerful, high voltage shock collar, perfect for dogs 150 lbs and up. There is no delay between correction and shock delivered.  All this makes Dogtra 1900S the strongest shock collar on the market!

Although it’s expensive it’s a one-time investment and you want to be sure you are buying a quality product when it comes to shock collars!


What is the strongest shock collar for dogs?

Dogtra 1900S is the strongest dog shock collar on the market. It has 0-127 levels of stimulation and it is perfect for hard-to-train dogs.

What is the strongest shock collar for training dogs?

1. Dogtra 1900S Series Ergonomic is the best and strongest shock collar for training dogs.
2. SportDOG Brand 425X is the best shock collar to train dogs with 3 training modes.

Will a shock collar make my dog more aggressive?

It is important to note that the shock collar should only be used as a training tool and should never be used in a punitive manner. When used correctly, shock collars can be an effective way to train your dog.

What do vets think about shock collars?

The general consensus among veterinarians is that shock collars can be effective training tools, but should only be used as a last resort. Shock collars should never be used in a punitive manner. When used correctly, shock collars can be an effective way to train your dog.

Can you leave a shock collar on a dog all the time?

It is advised by experts that you don’t leave a shock collar on a dog for more than 8 hours and never overnight.

How strong are shock collars?

The strength of a shock collar is measured in volts, and it can range from as low as 3 V to as high as 10,000 V. The higher the voltage, the more powerful the shock.
However, it’s important to note that the strength of the shock is not always directly proportional to the voltage. For example, a 3 V shock may be just as strong as a 9 V shock, depending on the design of the collar.

What are the risks of using a shock collar?

There are several risks associated with using a shock collar, and these vary depending on the type of collar you’re using. For example, if you’re using a bark-activated collar, your dog may become anxious and stressed if they keep receiving shocks whenever they bark. This can lead to serious behavioral problems, such as aggression.
Additionally, if you’re using a remote-controlled shock collar, there is always the potential for misuse, which could result in your dog being seriously injured or even killed.

How do I choose the right shock collar for my dog?

When choosing a shock collar, it’s important to consider your dog’s individual needs. For example, if your dog is very large or has thick fur, you’ll need a collar with a higher voltage in order to get their attention. Additionally, you’ll want to make sure that the collar is comfortable for your dog to wear, and that it has a safety feature that will prevent it from shocking your dog for longer than necessary.

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