greenworks battery charger flashing red light

GreenWorks Battery Charger Flashing Red Light: Troubleshooting Guide

Some possible reasons for your GreenWorks battery charger flashing red light include:

Reason Solution
Extreme Battery TemperatureAdjust the Temperature 
Improper Battery PlacementSecure the Placement
Loose or Damaged ConnectionsCheck the connections
Battery Memory EffectAvoid partial Charging
Damaged BatteryInspect the Damage
Charger MalfunctionCheck the Charger

Fixing these issues can solve the headache of flashing red lights.

Key Takeaways

  • Check temperature, connections, and battery condition. Fix issues to ensure proper charging.
  • Avoid partial charging to prevent memory effects. Charge lithium-ion batteries fully for better performance and longevity.
  • Replace old or damaged batteries showing a red light during charging. Ensure safety when handling batteries and chargers.
  • Consult your GreenWorks manual or contact customer support for professional help if troubleshooting fails or you need further assistance.

GreenWorks Battery Charger Flashing Red Light: Detailed Troubleshoot

why is my battery charger blinking red and green
Source: smarty fence

I give below the common problems and solutions for GreenWorks charger flashing red lights. I have come across these problems many times so I have tried to give you the best solutions from my expert side.

Extreme Battery Temperature:

If the battery is excessively hot or freezing, the charger won’t charge it, causing the red light to flash.

SolutionAdjust the Temperature:

Unplug the charger immediately. Place the battery in a room-temperated, dry area and far from sunlight. Let the battery cool down or warm up to room temperature. Once it is normal, then charge it as usual. 

If the problem persists, I recommend replacing the battery as it may be damaged.

Improper Battery Placement:

It is quite rare, but if the battery isn’t correctly placed in the charger, the red light may flash. 

SolutionSecure the Placement:

Ensure the battery is securely inserted, making sure it clicks into place.

Loose or Damaged Connections:

If the connection is faulty or not secured enough, it may cause flashing red lights in the charger. 

SolutionCheck the connections:

If you spot any visible damage, you have to replace the damaged hardware.

If the connections are secure and undamaged but the red light continues to flash, try using a different charger or battery.

Battery Memory Effect:

Lithium-ion batteries can develop a memory effect if they are consistently partially charged. 

SolutionAvoid partial Charging:

Try to charge your battery fully and avoid interrupting the charging process.

If a memory effect is suspected, discharge the battery completely and then recharge it fully a few times to recalibrate it.

Avoid partial Charging
Source: Greenworks tools

Damaged Battery:

A damaged battery, with cracks or leaks, may not charge properly, leading to a red flashing light.

SolutionInspect the Damage:

Inspect the battery for damage and replace it if necessary. Do not use a damaged battery.

Refer to the GreenWorks user manual for specific error codes related to the red flashing light. Check the troubleshooting guide in the given manual for the specific error code you facing.

Lithium-ion batteries typically have a limited lifespan of 2-3 years. If your battery is older and the red light keeps flashing, it is time to replace it with the latest battery. They lose their capabilities over time and can not hold charge effectively for longer.

Charger Malfunction:

If the charger itself is damaged, it may be unable to charge the battery, causing the red light to flash.

Pro tip: If you want to know about using 18v battery on 40v Makita, try reading this article.

SolutionCheck the Charger:

Check for charger damage and replace it if needed. Avoid using a damaged charger as it can be unsafe.

Product Feature
Greenworks 40V Battery ChargerCompatible, wall-mountable

If possible, try charging your battery with a different charger that you know is working. If the battery charges successfully with the alternate charger, your original charger may be faulty. Replace it with a new one.

Safety is important when troubleshooting. Always remember the manufacturer’s instructions and safety caution when handling batteries and chargers. 

If none of the above solutions work, it’s best to seek professional assistance or contact GreenWorks customer support for further help.


Why is the Red Light Blinking On the Strion Charger?

It’s okay if the battery charger LED keeps blinking with a fully charged battery. This is completely normal. It might take around 15 to 30 minutes, but there’s no need to worry. 

Why is My LED Lenser Blinking Red and Green When Charging?

When the battery is fully charged, you’ll see a steady green light. A flashing green light means it’s half-charged. A flashing red light means it has a low charge, and a solid red light means the battery is nearly empty.

Why is My Battery Blinking Red and White?

Battery blinking red and white indicates an internal fault. Try charging, updating firmware, and checking for product updates. If issues persist, consider resetting or seeking service.

Closing Words

I hope you found out all the fixes of the GreenWorks charger flashing a red light

By following these steps and maintaining your equipment properly, you can ensure the longevity and effectiveness of your GreenWorks tools.

If these solutions don’t resolve the issue, don’t hesitate to seek professional assistance or contact GreenWorks customer support for further assistance.

Please, don’t forget to write in the comments about your experience.

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