If your charger is making a clicking noise during use, it’s likely due to an internal relay switching, faulty components, or power fluctuations. This sound can be harmless in some cases, but it could also signal a developing electrical issue that shouldn’t be ignored.
It might surprise you to learn that chargers, especially those for laptops or power tools, often contain internal components like relays, transformers, and capacitors—each capable of generating subtle sounds.
However, a repetitive clicking noise isn’t normal under most conditions. It often suggests the charger is either trying to protect itself from overloading, failing to maintain a stable connection, or struggling with internal wear.
Ignoring these sounds could lead to overheating, charging inefficiencies, or even damage to your device
Best Diagnostic Tools and Replacement Chargers for a Clicking Charger
If your charger is making a clicking noise and you’re unsure whether it’s a harmless quirk or a sign of danger, using the right diagnostic tools—or replacing the charger altogether—can save your device and your safety. Below are three highly recommended products to help you test or replace a faulty charger.
AstroAI Digital Multimeter
A reliable tool for testing voltage, resistance, and continuity.
Why we picked it: The AstroAI Multimeter is affordable, precise, and beginner-friendly—ideal for checking if your charger is delivering stable power or suffering internal faults.
Anker 737 GaNPrime 120W USB-C Charger
A high-performance replacement charger for modern USB-C devices.
Why we picked it: Known for its safety features, silent operation, and wide compatibility, this charger avoids overheating and clicking thanks to advanced GaN technology.
Klein Tools ET920 USB Power Tester
Measures voltage, current, capacity, and charging speed.
Why we picked it: Perfect for USB chargers, this power tester helps you identify erratic power delivery—which often causes clicking—without opening your charger.
What Causes a Charger to Make a Clicking Noise During Operation?
A clicking noise from your charger during use can be unsettling—and it’s almost always a sign that something is off. This noise usually indicates that the charger is cycling power, facing electrical stress, or dealing with faulty internal components.
Here are the most common reasons your charger might be clicking:
Internal Relay Switching
Some advanced chargers, especially those used for laptops or power tools, include internal relays. These act like automatic switches.
- When a charger detects abnormal voltage or current, the relay may open and close rapidly to protect your device.
- This relay action can produce a “clicking” sound as it toggles on and off.
Capacitor Failure
Capacitors store and release energy in a regulated way, but when they begin to fail:
- They may leak, bulge, or short circuit.
- This causes irregular electrical discharges, which can create clicking sounds or sparks.
Overheating and Auto-Shutdown
Chargers with thermal protection may click when they overheat.
- The clicking is the result of the unit powering off and on rapidly to prevent damage.
- This often happens with generic or poor-quality chargers.
Intermittent Electrical Contact
Loose wiring, a damaged power cord, or a wobbly plug connection can also be culprits.
- The unstable connection causes power surges and interruptions, triggering protective relays or components to cycle.
Incompatibility with Connected Devices
Sometimes the device you’re charging draws more current than the charger can safely deliver.
- This overload can cause the charger to shut down and restart in cycles—producing a rhythmic clicking sound.
If your charger clicks occasionally and still charges reliably, it may not be an emergency. But if it clicks constantly or stops charging, it’s time to diagnose further or replace the unit.
Is It Safe to Use a Charger That Makes a Clicking Noise?
When your charger starts making a clicking sound, the first question on your mind is probably: “Is this safe?” The honest answer is—it depends. Some clicking noises are harmless, but many signal underlying problems that could risk your safety or damage your device.
Here’s what you need to consider:
Occasional vs. Constant Clicking
A one-time or rare clicking noise may simply be your charger’s relay activating to protect against a power surge. This is generally safe. However, constant or frequent clicking often means internal components are struggling.
Quality and Brand
Chargers from reputable brands typically have built-in safety features that prevent dangerous failures. If your charger is generic or very old, the risk of overheating, electrical shorts, or even fire increases when it clicks repeatedly.
Device Charging Behavior
If your device is still charging normally despite the clicking, the issue might be minor. But if charging is inconsistent, slow, or stops altogether, it’s a clear warning sign.
Physical Condition
Inspect the charger and cables for damage, discoloration, or a burning smell. Any visible defects combined with clicking noises warrant immediate discontinuation of use.
Power Source Stability
Sometimes, the issue isn’t the charger but an unstable power outlet or extension cord causing power surges, which make the charger click.
Safety Tips:
- Unplug the charger immediately if you smell burning or see smoke.
- Avoid using damaged chargers or cables, even if the clicking stops.
- Use chargers that match your device’s specifications to prevent overload.
- Consider investing in surge protectors to shield against voltage spikes.
If in doubt, replace the charger with a certified, high-quality model rather than risking your safety or device health.
How Can I Diagnose the Cause of the Clicking Noise in My Charger?
Diagnosing the cause of a clicking charger can seem technical, but with a few straightforward steps and basic tools, you can identify whether the problem is minor or requires replacement.
Here’s how to approach it:
Visual Inspection
Start by carefully examining your charger and cables:
- Look for any visible signs of damage like cracks, bulges, discoloration, or exposed wires.
- Check the plug and cable connectors for looseness or corrosion.
- Smell for any burnt or unusual odors.
Test the Power Outlet
Sometimes the outlet itself causes power fluctuations:
- Plug your charger into a different, known-good outlet.
- Avoid using power strips or extension cords temporarily to eliminate extra variables.
Use a Multimeter or USB Power Tester
If you have a digital multimeter or USB power tester, you can check:
- The charger’s voltage output — it should match the charger’s label specifications.
- Whether the output is steady or fluctuating, which can cause clicking.
- The continuity of cables to confirm no internal breaks.
Observe Charging Behavior
- Note if the device charges intermittently or if the charger shuts off and restarts repeatedly.
- See if the clicking corresponds to moments when the charger powers on or off.
Try Another Charger
- If possible, use a different charger with your device.
- If the clicking stops and charging stabilizes, your original charger is likely faulty.
When to Seek Professional Help
If you notice burning smells, visible damage, or the device fails to charge despite these tests, stop using the charger and consult a professional or replace it immediately.
How Can I Fix a Charger That Makes Clicking Noises?
Once you’ve diagnosed why your charger clicks, you might wonder if there’s a way to fix it or if replacement is your only option. Here are some practical steps and tips to address the issue:
Tighten Connections and Replace Damaged Cables
- Sometimes, the clicking results from intermittent power flow caused by loose plugs or frayed cables.
- Ensure the charger’s plug fits snugly into the outlet and device port.
- Replace any damaged or worn-out cables immediately.
Clean Charger and Ports
- Dust and debris can cause poor contact and electrical noise.
- Use compressed air or a soft brush to clean the charger’s connectors and your device’s charging port gently.
Avoid Overheating
- Keep the charger in a well-ventilated area away from direct sunlight or heat sources.
- Overheating can cause thermal protection circuits to trigger clicking noises.
Use a Surge Protector
- Power surges or fluctuations can cause a charger to cycle on and off rapidly.
- Protect your devices with a quality surge protector to prevent damage and clicking noises.
Firmware or Software Updates
- Sometimes, the issue lies with the device’s charging management system.
- Check for updates to your device’s firmware or software that might resolve power regulation issues.
When to Replace Your Charger
If clicking persists after these steps, or if you notice physical damage, odors, or your device is charging inconsistently, it’s safer to replace the charger. Using a faulty charger can risk your device and personal safety.
When Should I Replace a Charger That Is Making Clicking Noises?
Knowing when to replace a clicking charger is crucial to protect both your device and your safety. While some issues can be fixed, others are signs that your charger has reached the end of its safe and effective life.
Here are clear signs it’s time to replace your charger:
Persistent Clicking Noise
If the clicking continues despite troubleshooting and attempts to fix, the internal components may be failing.
Visible Damage
Cracks, bulging parts, burnt marks, or melted cables indicate serious internal damage that can’t be repaired safely.
Device Charging Issues
Your device charges slowly, intermittently, or not at all when using the charger.
Overheating or Burning Smell
Excess heat or unusual odors are red flags that the charger is unsafe.
Age and Quality
Chargers older than a few years, or cheap no-brand chargers, are more prone to failure and should be replaced proactively.
Safety Certifications Missing
Always use chargers that have proper safety certifications (UL, CE, FCC). If yours lacks them, replacement is recommended.
Tips for Choosing a New Charger:
- Match voltage and amperage to your device’s specifications.
- Opt for chargers from reputable brands with safety features.
- Consider chargers with GaN technology for efficiency and quieter operation.
Replacing a faulty charger not only protects your device but also prevents potential electrical hazards.
Conclusion
A clicking noise from your charger is more than just an annoying sound—it’s your charger’s way of signaling that something isn’t right. Whether it’s internal relay switching, overheating, or damaged components, paying attention to these sounds can save you from device damage or safety hazards.
Regular inspections, using quality chargers, and troubleshooting minor issues can help you keep your devices powered safely and efficiently. But when clicking persists, it’s best to replace the charger promptly. Your safety and the longevity of your electronics are worth the investment.
Remember, always use chargers designed for your device, and never ignore unusual noises or signs of wear.
Frequently Asked Questions About Why Does My Charger Make a Clicking Noise During Use?
Is a clicking charger dangerous?
A clicking charger isn’t always dangerous, but it can indicate electrical stress or failing components. Persistent clicking, overheating, or burning smells are signs you should stop using the charger immediately and replace it to avoid fire hazards or damage to your device.
Can a charger make clicking noises and still charge properly?
Yes, sometimes a charger may click but still charge your device. This often happens due to relay switching or power cycling to protect the device. However, frequent clicking usually means something is wrong, so it’s best to monitor the charger’s performance closely.
What causes a charger to click intermittently?
Intermittent clicking can result from unstable power supply, loose connections, damaged cables, or internal faults like failing capacitors or relays. It can also happen if the charger is overloaded or overheating, causing it to shut off and turn on repeatedly.
How can I stop my charger from clicking?
Ensure all connections are secure, clean any dirt or debris from the charger and device ports, use a stable power outlet, and avoid overheating. If these steps don’t help, it’s usually safer to replace the charger.
Can a power surge cause clicking noises in a charger?
Yes, power surges can cause a charger’s protective components to activate repeatedly, resulting in clicking noises. Using a surge protector can help prevent this issue and protect your devices.
Is it worth repairing a clicking charger?
Repairing chargers is often not recommended due to safety risks and cost. Chargers are relatively inexpensive, and replacing a faulty charger with a certified new one is usually the safest option.