The most common reason: a broken charging port or frayed cable
Your charger stops working because the cable is damaged, the charging port on your device is bent or corroded, or the power adapter itself has failed. Of these three, a frayed or kinked cable is the most common culprit — the internal wires break from repeated bending, and the charger either won't deliver power or will only work at certain angles.
The second most common failure is the charging port itself. If you've plugged and unplugged the charger hundreds of times, the metal contacts inside the port wear down or the port loosens from its housing. Corrosion from moisture or lint buildup can also prevent good contact between the cable and the port.
The power adapter — the brick that plugs into the wall — fails less often but does happen. When it does, the whole charger is usually dead. You'll know this is the problem if a different cable works fine in your device's port, or if the adapter feels hot to the touch or smells burnt.
Key Takeaways
- A frayed, kinked, or bent cable is the most common reason a charger stops working, and you can often see the damage near the connector ends.
- Charging ports wear out from repeated use and can also corrode from moisture or lint, preventing the cable from making solid contact.
- The power adapter (the wall brick) fails less often, but when it does, the entire charger is usually beyond repair.
- Testing with a different cable or adapter tells you which part is broken and whether you need to replace just the cable or the whole charger.
- Keeping your charging port clean and avoiding tight cable bends will extend the life of both your charger and your device's port.
How to tell which part is actually broken
Start by looking at the cable itself. Bend it gently along its entire length from the connector to the wall plug. If you see cracks in the rubber coating, exposed wires, or a section that feels stiff or kinked, the cable is damaged and needs replacement.
If the cable looks fine, look at the charging port on your device. Use a flashlight and look straight into the port. The metal contacts inside should be shiny and evenly spaced. If they look dark, corroded, or if one is bent inward, the port is damaged. Also try plugging the charger in at different angles — if it only works when you hold the cable at a certain angle, the port is likely worn.
To test whether the power adapter is the problem, borrow a charger from someone with the same device type and try it. If the borrowed charger works, your adapter has failed. If it doesn't work either, the problem is your device's charging port.
Fixing a damaged cable
If the cable is the problem, the simplest fix is to buy a replacement cable that matches your device. Most phones and tablets use either USB-C, Lightning (Apple), or Micro-USB connectors. Check what your device uses before you buy.
Do not wrap electrical tape around a frayed cable or try to repair it yourself. A damaged cable can overheat, damage your device's battery, or cause a fire. Replacement cables cost between $10 and $30 depending on the type and brand, and a new cable will charge faster and more safely than a repaired one.
When you get a new cable, avoid the habits that broke the last one. Don't wrap it tightly around the charger brick, don't bend it sharply near the connectors, and don't yank it out of the port — pull by the connector itself, not the cable.
Cleaning a corroded or dirty charging port
If your port looks dark or corroded but the cable is fine, try cleaning it before you assume the port is permanently damaged. Power off your device completely. Use a wooden toothpick or a plastic dental pick — never metal — and gently scrape the metal contacts inside the port. Work slowly and be careful not to bend the contacts or break the pick off inside.
After scraping, use a dry cotton swab to wipe out any debris. If there's visible corrosion (a white, green, or blue crusty coating), dampen the swab very slightly with white vinegar and wipe the contacts again. Let the port air-dry for at least 30 minutes before plugging in the charger.
This cleaning often restores a port that stopped working due to lint or light corrosion. If the port still doesn't work after cleaning, or if the contacts are visibly bent, the port itself is damaged and will need professional repair or replacement.
When the power adapter has failed
If you've confirmed that the cable is fine and the port is clean, but the charger still doesn't work, the power adapter is dead. You'll need to replace the entire charger unit. Buy one that matches your device's specifications — the voltage and amperage (usually printed on the original adapter) matter. Using the wrong adapter can damage your device's battery.
Original chargers from the device manufacturer are more expensive but are may provide to work safely. Third-party chargers that are certified by organizations like UL or FCC are usually safe and cost less. Avoid very cheap chargers with no certification, as they can overheat or fail suddenly.
Preventing charger failure in the future
Most charger damage comes from how you store and use it. Coil the cable loosely rather than wrapping it tightly around the adapter. Store the charger in a cool, dry place — avoid leaving it in a hot car or near a heat source. Don't let the cable hang with the device's weight pulling on the connector; use a cable organizer or clip to support it.
Keep your charging port clean by not letting lint accumulate. If you carry your phone in a pocket or bag, lint can pack into the port over time. A quick monthly cleaning with a toothpick prevents corrosion and keeps the port working longer.
If you charge overnight regularly, consider unplugging the charger once the device is fully charged. Chargers that stay plugged in and powered draw a small amount of electricity continuously, which can shorten their lifespan.
Frequently Asked Questions
Can I use a different brand charger with my device?
Yes, as long as it has the same connector type and the correct voltage and amperage. A USB-C charger from a different brand will work with any USB-C device, for example. Check the specifications on your original charger and match them when you buy a replacement.
Why does my charger only work at certain angles?
The charging port is worn or the cable connector is bent. When you plug it in at a specific angle, the metal contacts make better contact. This is a sign the port or cable will fail completely soon, so plan to replace it before it stops working entirely.
Is it safe to use a charger that gets hot?
A charger that is warm to the touch is normal, but one that is too hot to hold for more than a few seconds is not safe. Unplug it when ready and stop using it. A dangerously hot charger indicates a problem inside the adapter and can damage your device or cause a fire.
What should I do with my old broken charger?
Don't throw it in the trash. Take it to an electronics recycling center, a Best Buy, or a phone carrier store — most accept old chargers for free recycling. They contain materials that can be recovered and reused, and some materials are toxic if left in a landfill.
Why do chargers fail so quickly compared to other electronics?
Chargers are bent, wrapped, yanked, and heated repeatedly throughout their life. The cable is the weakest point because it flexes constantly while carrying power. Treating the cable gently and storing it properly can double or triple how long a charger lasts.