My Dog Ate A Battery

dog ate a battery

My Dog Ate A Battery! Help!  What Should I Do? 

Batteries contain substances that are toxic to dogs. Battery ingestion can lead to damage to your dog’s mouth, esophagus, stomach and intestines. In severe cases, this damage can be fatal. If you suspect your dog has eaten a battery, contact your veterinarian immediately. Once you’ve made that call, here is what you need to know about battery ingestion in dogs. Let’s keep your pet happy, healthy and hopefully battery free.

Dogs like Labradors are prone to eating all kinds of unsuitable items, from socks to stones, and paper to plastic. Tiny batteries are a particular risk and they are so easy to swallow and many people don’t realise how dangerous they are. As with any foreign body ingestion, batteries pose choking and obstruction risks. Unlike most foreign bodies, however, batteries contain toxic substances that can corrode your dog’s tissues, literally burning holes through their GI tract.

Many household batteries are alkaline. These batteries contain sodium hydroxide or potassium hydroxide. If a battery is punctured during the chewing process or breaks down in your dog’s stomach, these alkaline substances can come in contact with your dog’s internal tissues. Exposure to alkaline materials can cause a corrosive injury scientifically known as liquefaction necrosis.

Liquefaction necrosis dissolves proteins, destroys collagen, emulsifies cell membranes, and causes saponification of fats. This softens your dog’s tissues, allowing the toxins to penetrate deep into your dog’s body. The result of this will be lesions and in severe cases, perforation.

dog ate battery

Perforations from battery consumption

A perforation, or hole, in any part of your dog’s GI tract is dangerous, whether it is the esophagus, stomach or intestines. Perforations can allow the contents of your dog’s GI organs to leak into their body cavity. Often causing additional damage and potentially life-threatening conditions. Lesions of the esophagus can add another threat: scar tissue. As your dog heals from the sores caused by the swallowed battery, the scar tissue can cause esophageal stricture, which is a narrowing of the esophagus. This, in turn, can lead to difficulty swallowing, choking, and in some cases, obstruction.

As if that isn’t bad enough, batteries also contain heavy metals, like zinc and lead. Batteries that remain in the stomach long enough can break down, releasing these heavy metals and leading to heavy metal poisoning. Alkaline substances, unlike acids, initially cause very little pain. Coming into contact with them may not deter your dog from eating more. Instead, you will have to be on the lookout for signs that your dog ate a battery, which we will go into later on.

Button batteries

Standard alkaline batteries are dangerous. Button batteries, also called disc batteries, bring additional risks to the table. Button batteries are little round batteries that can be found in most of our electronic devices. Hearing aids, watches, calculators, toys, key fobs. Even greeting cards can contain button batteries! Making it easy for your dog to ingest them while she is busy chewing on something tasty.

Alkaline liquid can leak from button batteries, too. Especially if your dog punctures the battery before swallowing. But button batteries contain something even more dangerous: current induced necrosis.

Button batteries create an electrical current that can burn through any nearby tissue, even if the battery doesn’t leak. Their small size makes it easy for them to get lodged in the GI tract, where they can lead to burns, corrosive damage, necrosis, ulcers, and perforations.

Some button batteries, like lithium button batteries, can cause severe necrosis to surrounding tissues in as little as 15-30 minutes of contact. These perforations can cause life-threatening conditions. If you suspect your dog has eaten a battery, contact your veterinarian immediately.

My dog ate a battery…. I think!

But what should you do if you only suspect your dog has eaten a battery? Your dog might not show any symptoms of battery ingestion immediately. It can take a few hours for signs of exposure to alkaline materials to develop in your dog’s mouth or on his lips. And can take up to 12 hours for signs of ulceration to show.

The first warning sign of battery ingestions is a destroyed or partially destroyed electronic. If you come home to find the remote control chewed, for example, and can’t find the AA batteries that power it, you will need to keep a close eye on Fido and call your veterinarian. Sometimes, however, we don’t always know our dogs have eaten something.

A punctured battery can lead to ulceration of the lips and mouth. If you notice sores anywhere in or around your dog’s mouth, it could be a result of a dog chewed battery ingestion. But what if your dog doesn’t have any visible lesions or ulceration?

Drooling, bad breath, increased thirst, and a loss in appetite can all be signs of battery ingestion and corrosion. The irritation caused by the battery can also cause vomiting, diarrhea, and abdominal pain. Especially if the battery leads to an obstruction. If you notice any of these symptoms, contact your veterinarian or nearby veterinary emergency hospital.

What to do when your dog eats a battery

Battery ingestion is a emergency, especially if your dog ate a button battery. The first thing you should do is call your veterinarian. Depending on the situation, your veterinarian may recommend bringing your dog in to the hospital or veterinary emergency hospital immediately. Once there, a veterinarian will examine your dog for any clinical signs of battery ingestions, like visible lesions or abdominal pain.

Next, your veterinarian may take radiographs. Since batteries have metal casings, they are relatively easy to spot on radiographs. This will help your veterinarian come up with an accurate diagnosis. Radiographs will also help your veterinarian pinpoint exactly where in your dog’s GI tract the battery is located. Not to mention how many batteries were swallowed!

Is there any treatment?

Your dog ate a battery. Now what? What happens next will depend on several factors. These include the type of battery and how long ago the battery was ingested. Your vet will also consider where in your dog’s GI tract the battery is located.

Button batteries that are lodged in your dog’s esophagus will most likely need to be removed immediately through endoscopy or surgery. If the button batteries or other batteries have passed to your dog’s stomach, however, things are different. Your veterinarian may consider monitoring your dog carefully. Hopefully until the battery has passed through your dog’s intestinal tract and into their feces.

During this time, they will provide supportive care and medications to relieve any symptoms and prevent further damage. If battery ingestion is caught quickly, your veterinarian may give water or milk. This is to help dilute the corrosive material your dog consumed. This is intended to help delay the lesions caused by button batteries.

Some dogs may need fluid and nutritional support. Along with pain medication to alleviate the discomfort caused by corrosion and additional damage. Your veterinarian may also give your dog medications to protect their stomach lining, antibiotics to prevent secondary infections, and liquid food.

Passing The Battery

After the battery has been removed or successfully passed, your veterinarian may still want to continue monitoring your dog for another 24 hours. This is to make sure there is no additional damage. During this time, your dog’s veterinary team will monitor your dog. They’ll check her blood count, body temperature, and behavior, as well as continuing supportive care.

There is one thing your veterinarian will almost never do, however—make your dog throw up. Making your dog throw up a battery is a bad idea. If the battery was punctured, vomiting will re-expose your dog’s esophagus to the corrosive materials, causing additional damage. Vomiting could also give button batteries another opportunity to perforate your dog’s esophagus, and there is always the risk of obstruction.

The Labrador Handbook by Pippa Mattinson(paid link)

My dog ate a battery what should I do? - Dog health guide.

My dog chewed a battery—will he be okay?

Batteries are common household objects. This means the odds of your dog ingesting one in his lifetime are relatively high. Catching battery ingestion as quickly as possible, especially button batteries, will help reduce your dog’s risk of injury. If you think your dog has eaten a battery, call your veterinarian.

Battery ingestion should not be treated at home, as the potential complications can be life-threatening.

The Labrador Site Founder

Pippa Mattinson is the best selling author of The Happy Puppy Handbook, the Labrador Handbook, Choosing The Perfect Puppy, and Total Recall.

She is also the founder of the Gundog Trust and the Dogsnet Online Training Program 

Pippa's online training courses were launched in 2019 and you can find the latest course dates on the Dogsnet website


  1. My dog ate a disc battery (2032) from a remote last year and another from an electronic candle this past week!

    In the first instance, I saw the components o the remote but couldn’t find the battery. I called the animal poison control, they charged me $75 and I gave them a number to a local vet emergency place (it was 7pm). Not sure why I had to incur that charge. Anyway, after taking him there, they couldn’t manage him to get an xray so I went on my way to take him to a larger more well equipped place that had an endoscope that could help remove the battery should they confirm it’s in there. In the car on the way to this other place, he vomited and out came the battery! I was so relieved and we went home. This most recent instance, he decided to eat one of the electronic tea light candles I had out in the living room. I came home and found he had chewed apart a whole candle and again, I couldn’t find the battery. It was night again and no place that had the endo was open. Nearest place was 1 hr away. I decided that since he puked it up last time he might do it again. I put him in the car and drove windingly to the CVS (he sometimes pukes in the car)…I bought some Hydrogen Peroxide and some syringes and went back home. I gave him a little snack and then followed the rule of thumb and prepped 1ml of hydrogen peroxide for each lb of bodyweight. He wouldn’t hold still to take the syringes of liquid and was getting triggered and bitey…so I did my best to squirt the stuff into his mouth as he was panting (while leashed)…I guess I got enough in there after three 10ml syringes worth (some got on the floor so approx 20-25ml got in his mouth — he’s a 26 lb dog)….I observed him and after about 8 minutes he sort of got up and sniffed around and arched…I knew what was coming….sure enough he vomited and I even heard the click of the battery dropping onto the floor. I sifted through the copious amount of vomit and found the battery. He recovered quickly. Not officially suggesting to induce vomiting if you’re dog is in this situation but it worked for me.