--- title: "Garmin Dash Cam 67W Battery Problems" canonical: "https://gadgetguides.org/garmin-dash-cam-67w-battery-problems/" author: "Arian" published: "2026-09-05T13:33:58+00:00" modified: "2026-09-05T13:33:58+00:00" language: "en-US" site: "Gadget Guides" description: "![Garmin Dash Cam 67W internal battery swelling](images/garmindashcam67winternalbatteryswelling.webp) Image source: Web (Bing) / garmin.com.tw (Web image…" categories: "Cameras & Drones" attribution: "Gadget Guides (https://gadgetguides.org/)" --- # Garmin Dash Cam 67W Battery Problems ![Garmin Dash Cam 67W internal battery swelling](https://gadgetguides.org/wp-content/uploads/2026/09/garmin-dash-cam-67w-internal-battery-swelling-mtofbu82.webp) Image source: Web (Bing) / garmin.com.tw (Web image (fair-use with source credit)) If you own a Garmin Dash Cam 67W, you might have noticed it acting strangely. Maybe it shuts off after a few minutes of parking mode. Maybe the case looks slightly bulged. These are classic signs of Garmin Dash Cam 67W battery problems, and they are more common than most owners realize. The internal lithium-ion polymer battery in this model has a known tendency to degrade, swell, and eventually fail, especially in hot climates. Manufacturer specifications indicate the unit operates between -20°C and 60°C. But aggregate reviews report that real-world heat exposure around 50°C accelerates battery wear significantly. As of 2026, this remains a leading cause of premature failure for the 67W. Understanding what is happening inside your dash cam is the first step to deciding whether you can fix it or need to replace it. ## Quick Answer Garmin Dash Cam 67W battery problems are caused by a lithium-ion polymer cell that degrades under heat. The symptoms are swelling, short runtime, or total failure to power on. If the battery is swollen, stop using the camera immediately. Do not attempt to charge it. Contact Garmin support for warranty options. If the warranty is expired, consider a hardwire kit or a replacement unit. ## Why This Battery Problem Is Worth Taking Seriously A swollen lithium-ion polymer battery is not just a minor inconvenience. It is a genuine safety hazard. When the internal battery in a Garmin Dash Cam 67W begins to puff up, it is releasing gas from a chemical breakdown inside the cell. That gas pressure can cause the plastic casing of the camera to crack. In extreme cases, the battery can rupture or catch fire, especially if you continue to plug it in and charge it. The Consumer Product Safety Commission has issued warnings about lithium-ion batteries in small electronics overheating and causing fires. Dash cams sit in cars that can reach interior temperatures well above 60°C in summer. That environment is brutal for any lithium-based cell. The Garmin 67W was designed with a battery instead of a supercapacitor, which means it is inherently less tolerant of extreme heat than some alternatives. Beyond the safety aspect, there is a practical reason to take this seriously. A failing battery means your camera stops recording when you need it most. Parking mode is useless if the battery drains in 15 minutes. The whole point of a dash cam is reliability. If you have been dealing with random shutdowns, you are not alone. Thousands of owners have reported similar issues across support channels. The good news is that you have options. But you need to act carefully. Doing the wrong thing can void your warranty, damage the camera further, or create a fire risk. This guide walks you through what is actually happening, how to diagnose it, and what your safest next steps are. ## What's Actually Happening Inside Your Garmin 67W ![lithium-ion polymer battery swelling diagram](https://gadgetguides.org/wp-content/uploads/2026/09/lithium-ion-polymer-battery-swelling-diagram-mtofbvq0.webp) Image source: Bing (Web (fair-use with source credit)) The Garmin Dash Cam 67W uses a lithium-ion polymer (LiPo) pouch cell. These batteries are common in small electronics because they are thin and lightweight. But they have a weakness: they are sensitive to heat and physical stress. Every time you charge and discharge the battery, the electrolyte inside breaks down a tiny bit. Heat speeds up that process dramatically. Inside the sealed pouch, chemical reactions produce gas as a byproduct. In a healthy battery, the gas is minimal and reabsorbed. But as the battery ages, the gas builds up faster than it can be managed. The pouch starts to swell. This is called puffing. You can see it as a bulge in the back or side of the camera case. If you press on it, the case might feel soft or spongy instead of firm. The battery is rated for roughly 500 charge cycles before noticeable degradation. In a dash cam, that translates to maybe 12 to 18 months of daily use. But if you live in a hot climate, that timeline can shrink to six months. The 67W battery is also used for parking mode, which means it is constantly cycling in and out of charge. That heavy use accelerates wear. Teardowns suggest the battery capacity is around 500 to 800 mAh. That is a small cell. It is designed to keep the camera running for a few minutes during power interruptions, not for extended parking mode use. Many owners mistakenly think the battery can handle hours of parking recording. That is not the case. The 67W was never intended for long-term battery-only operation. When the battery swells, it can push against the camera motherboard, the GPS module, or the speaker. That physical pressure can cause intermittent failures. You might see glitchy video, random resets, or the camera refusing to turn on. In some cases, the swelling pushes the back of the camera off the mount. The key takeaway is this: the battery is a consumable part. It will fail eventually. The question is whether you catch it before it becomes dangerous. ## How to Diagnose Whether It's the Battery or Something Else Not every Garmin Dash Cam 67W problem is a battery issue. The camera can fail for other reasons: a faulty charging cable, a loose USB port, a corrupted firmware update, or a dead supercapacitor in the hardwire kit. Before you assume the battery is the culprit, run through a quick diagnostic checklist. ### Step 1: Inspect the physical case Look at the camera from all angles. Hold it up to a light. Is the back cover bulging outward? Is the seam between the front and back halves uneven? If you see any deformation, the battery is swelling. Stop using the camera immediately. Do not plug it into power. This is a fire hazard, and you need to handle it with care. ### Step 2: Test the charging behavior Plug the camera into a known good USB power source. Use a wall adapter, not your car. If the camera turns on and records normally while plugged in, the battery itself might be dead but the rest of the unit works. If the camera does not turn on at all, even when plugged in, the problem could be the charging circuit or the power connector, not the battery. ### Step 3: Check for heat during charging If the camera gets uncomfortably hot while charging, that is a red flag. A healthy battery should warm up slightly, but not scorching hot. Excessive heat during charging indicates internal resistance has increased, which is a sign of battery degradation. You can also check if the camera feels hot to the touch after just a few minutes of charging. ### Step 4: Update the firmware Garmin releases firmware updates that can fix power management bugs. Connect the camera to your computer via Garmin Express. Check for updates. Many battery-related issues have been resolved with firmware patches. This is a free step that might save you a lot of trouble. If your camera is behaving erratically, try a firmware update before tearing it apart. ### Step 5: Test with a different cable and adapter The USB-C port on the 67W is a known weak point. If the cable is loose or the port is damaged, the camera might not charge properly. Try a different cable. Try a different power adapter. If the camera works with one cable but not another, the problem is the cable, not the battery. This is a common cause of frustration that gets mistaken for battery failure. If you have ruled out all of these and the camera still has a short runtime or fails to hold a charge, the battery is almost certainly the issue. The next step is deciding what to do about it. ## Your Options When the Battery Fails — and What's Actually Safe ![Garmin Dash Cam 67W hardwire kit installation](https://gadgetguides.org/wp-content/uploads/2026/09/garmin-dash-cam-67w-hardwire-kit-installation-mtofbwks.webp) Image source: Bing (Web (fair-use with source credit)) Once you confirm the battery is failing, you have four real options. Each has different risks, costs, and outcomes. ### Option 1: File a warranty claim If your 67W is less than one year old, contact Garmin support. The warranty covers manufacturing defects, including premature battery failure. You will need your proof of purchase and the serial number. Garmin may replace the unit or offer a refurbished model. This is the safest and easiest option if you are within the warranty period. ### Option 2: Use a hardwire kit Garmin sells a Constant Power Cable that hardwires the camera to your car's fuse box. This bypasses the internal battery entirely for parking mode. The battery is still there, but it only handles brief power interruptions. This extends the life of the battery and reduces the risk of swelling. Installation requires tapping into a fuse, which is a moderate DIY task. If you are not comfortable with electrical work, hire a professional. A hardwire kit costs around $20 to $40 and is a smart investment. ### Option 3: Replace the battery yourself This is technically possible, but it is not recommended for most people. The battery is soldered to the motherboard. You need to disassemble the camera, desolder the old cell, and solder in a new one. You also need to find a compatible replacement battery. The risk of damaging the camera, shorting the circuit, or causing a fire is real. If you attempt this, work on a non-flammable surface, wear safety glasses, and dispose of the old battery properly. The new battery will cost around $10 to $20, but you are on your own for support. ### Option 4: Buy a new dash cam Sometimes the simplest solution is to replace the unit. A new 67W costs around $150 to $200. If your current camera is out of warranty and the battery is swollen, the safest course is to dispose of it and buy a new one. You can also consider a model with a supercapacitor, which is more heat tolerant and does not have a battery that swells. This is the most expensive option upfront, but it eliminates the root cause. ### What not to do Do not ignore a swollen battery. Do not keep charging it. Do not puncture it. Do not throw it in the trash. A lithium battery fire in your car or home is not worth the risk. If you are not sure what to do with the old battery, take it to a local electronics recycling center that accepts lithium-ion cells. ## Common Mistakes That Can Make Things Worse (or Dangerous) When the battery in your Garmin Dash Cam 67W starts acting up, it is tempting to try quick fixes. Some of these can turn a minor problem into a serious hazard. Here are the mistakes to avoid. ### Mistake 1: Continuing to charge a swollen battery If you notice the case bulging, unplug the camera immediately. Do not plug it in again. Charging a swollen battery increases internal pressure and can cause a thermal runaway. That is the technical term for a fire. The battery is already compromised. Pushing more energy into it is dangerous. ### Mistake 2: Trying to pop the swelling Some people think pressing on the bulge will flatten it back. Do not do this. If you puncture the battery pouch, the electrolyte will leak out. That liquid is corrosive and flammable. It can damage the camera electronics, cause skin irritation, and create a fire risk. The swelling is a sign of gas buildup. Let it be. ### Mistake 3: Using the wrong replacement battery If you decide to replace the battery yourself, you must use a cell with the correct voltage, capacity, and connector. The 67W uses a 3.7V LiPo battery. A 3.6V or 4.2V cell will not work properly. The wrong battery can overcharge, overheat, or fail to power the camera. Stick to cells specifically designed for the 67W if you can find them. ### Mistake 4: Ignoring the firmware Before you assume the battery is dead, check for firmware updates. Garmin has released patches that address power management issues. A simple update can sometimes fix erratic behavior. Skipping this step means you might replace a perfectly good battery for nothing. ### Mistake 5: Disposing of the battery in household trash Lithium-ion batteries are hazardous waste. They cannot go in the regular garbage. In many places, it is illegal. If the battery is punctured in the trash truck, it can start a fire. Take it to an electronics recycling center or a retailer that accepts lithium batteries. This is a small step that prevents a big problem. ### Mistake 6: Assuming all dash cams have the same battery life The Garmin 67W uses a lithium polymer battery. Other dash cams, like the Mini 2, use a supercapacitor. Supercapacitors do not swell. They last much longer in hot cars. If you are tired of dealing with battery problems, consider switching to a capacitor-based model. But that is a decision for a new purchase, not a fix for your current camera. ## Frequently Asked Questions ### How long does the Garmin 67W battery last before it fails? Most users report 12 to 18 months of daily use before the battery degrades noticeably. In hot climates, that can drop to six months. The battery is rated for roughly 500 charge cycles. Heavy parking mode use shortens that lifespan significantly. ### Can I still use the camera with a dead battery? Yes, as long as the battery is not swollen. Plug the camera into a constant power source. It will run fine while connected. The internal battery only matters for parking mode and brief power interruptions. If the battery is swollen, stop using the camera entirely. ### Is it safe to replace the battery myself? It is technically possible but carries real risks. The battery is soldered to the motherboard. You need soldering skills and a compatible replacement cell. The wrong battery or a bad solder joint can cause a short circuit or fire. Proceed only if you are experienced with electronics repair. ### Does Garmin cover battery swelling under warranty? The one-year limited warranty covers manufacturing defects. Premature battery failure within that window is usually covered. But Garmin considers batteries a consumable part. If the camera is older than one year, you will likely need to pay for a replacement or buy a new unit. ### What is the best way to prevent battery problems? The most effective step is installing a hardwire kit. It bypasses the internal battery for parking mode, reducing charge cycles. Parking in the shade and using a windshield sunshade also helps. Keeping the firmware updated ensures you have the latest power management fixes. ### Should I buy another Garmin or switch to a different brand? That depends on your priorities. The 67W offers excellent video quality and GPS features. But the battery design is a known weakness. If you want a camera that handles heat better, look for a model with a supercapacitor instead of a lithium battery. Several brands offer this technology.