Black And Decker Battery Charger Flashing Red: Troubleshooting Tips

BLACK+DECKER 20Volt LithiumIon Battery ChargerBDCAC202B The Home Depot
BLACK+DECKER 20Volt LithiumIon Battery ChargerBDCAC202B The Home Depot from


If you own a Black and Decker battery charger, you may have encountered a situation where the charger’s indicator light starts flashing red. This can be frustrating as it indicates a problem with the charging process. However, there are several troubleshooting steps you can take to resolve this issue and get your battery charger working again.

Check the Battery Connections

The first thing you should do when you see the red flashing light is to check the battery connections. Make sure that the battery is securely connected to the charger and that there are no loose or damaged wires. If you find any issues, try reinserting the battery or fixing the connections to see if it resolves the problem.

Inspect the Battery

Next, examine the battery itself for any signs of damage or wear. Look for any visible cracks, leaks, or corrosion on the battery terminals. If you notice any of these issues, it is likely that the battery needs to be replaced. Damaged batteries can cause the charger to flash red as a safety precaution.

Check the Charger’s Compatibility

Ensure that the battery you are trying to charge is compatible with your Black and Decker charger. Some chargers have specific voltage or ampere requirements, and using an incompatible battery can trigger the red flashing light. Refer to the charger’s manual or contact the manufacturer to confirm compatibility.

Reset the Charger

If none of the above steps resolve the issue, try resetting the charger. Unplug it from the power source and disconnect the battery. Leave it unplugged for a few minutes to allow any residual charge to dissipate. Then, reconnect the battery and plug the charger back in. This simple reset may clear any temporary faults and resolve the red flashing light.

Inspect the Charger’s Components

Take a close look at the charger’s components, such as the power cord and the charging cables. Look for any signs of damage, frayed wires, or loose connections. If you find any issues, replace the damaged parts with genuine Black and Decker replacements to ensure proper functionality.

Verify the Charging Mode

Some Black and Decker battery chargers offer multiple charging modes, such as a fast charge or a trickle charge. Make sure that you have selected the correct charging mode for your battery. If the charger is set to a mode that is not suitable for your battery, it can cause the red flashing light to appear.

Monitor the Charging Process

When you reconnect the battery to the charger, closely monitor the charging process. If the red flashing light persists, it could indicate a problem with the battery or the charger’s internal circuitry. In such cases, it is recommended to contact Black and Decker’s customer support for further assistance.

Consider a Professional Repair

If you have tried all the troubleshooting steps mentioned above and the red flashing light still persists, it may be time to consider a professional repair. Black and Decker has authorized service centers where trained technicians can diagnose and fix any issues with your battery charger.


Experiencing a red flashing light on your Black and Decker battery charger can be frustrating, but with the right troubleshooting steps, you can resolve the issue and get your charger back in working condition. By checking the battery connections, inspecting the battery, and verifying compatibility, you can often identify and fix the problem. If all else fails, reach out to Black and Decker’s customer support or consider a professional repair to ensure the longevity of your battery charger.