Quick answer
- Per Greenworks' support FAQ, a solid red light usually means the battery is at the wrong temperature to charge, while a blinking red light is a fault. We could not find a published LED legend for the 40V charger used with the 29462/29472 packs (model 29482), so check your charger's manual; other Greenworks chargers may differ.
- If the light blinks red, remove the battery from the charger for 1 minute and reinsert it. If it still blinks red, remove the battery, unplug the charger for 1 minute, then plug it back in and reinsert the battery. Per Greenworks, if it still blinks red, the battery or charger is likely faulty.
- Ensure the battery is not too hot or too cold; lithium-ion batteries will not charge outside the charger's allowed temperature range.
- Inspect the battery terminals for dirt or corrosion, which can disrupt the connection.
- If the battery is still under warranty, consider contacting customer service for a replacement.
Symptoms
When your Greenworks 40V battery is not charging, you may observe the following symptoms:
- The charger displays a red light that flashes continuously. Per Greenworks' FAQ, a blinking red light indicates a fault with the battery or charger.
- If the battery is inserted into a tool, it may not power on or may display erratic behavior, such as intermittent operation or no response at all.
Quick checks
Before diving into troubleshooting, perform these quick checks:
- Temperature Check: Ensure the battery is within the acceptable temperature range. If it feels hot, let it cool to room temperature. If it's cold, warm it to room temperature before trying to charge.
- Connection Inspection: Remove the battery and inspect the terminals for dirt or corrosion. Clean them with a soft cloth if necessary.
- Charger Functionality: Test the charger with another Greenworks 40V battery, if available. This will help determine if the charger is functioning correctly.
- Power Source: Verify that the outlet you are using is working. Plug another device into the same outlet to check for power.
- Battery Age: Consider the age of the battery. If it’s several years old, it may have reached the end of its life cycle.
Step-by-step fix
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Remove the Battery: Always start by removing the battery from the charger or tool to ensure safety during troubleshooting.
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Inspect the Charger: Check the charger for any visible damage or loose connections. A damaged charger may not charge the battery properly.
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Clean the Terminals: Use a soft cloth to clean the battery terminals and the charger contacts. Dirt or corrosion can prevent proper electrical contact.
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Check for Fault Codes: Refer to your charger’s manual for LED fault patterns. Per Greenworks' FAQ, a blinking red light means remove the battery for 1 minute and reinsert it; if it still blinks red, unplug the charger for 1 minute, plug it back in and reinsert the battery.
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Temperature Adjustment: If the battery is too hot or cold, allow it to reach room temperature before attempting to charge it again.
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Try Charging Again: Reinsert the battery into the charger and observe the LED indicator. If it remains flashing red, the battery may be defective.
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Consider Replacement: If the battery continues to show a fault after these steps, it may be time to replace it.
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If it still isn't working
If your Greenworks 40V battery is still not charging after following the above steps, consider the following actions:
- Warranty Claim: Check if your battery is still under warranty. If so, contact Greenworks customer service for a replacement.
- Service Center: If the warranty has expired, visit an authorized service center for a professional evaluation.
- Replacement: If all else fails, purchasing a new battery may be the most practical solution.
FAQ
What does a flashing red light on my Greenworks charger mean?
Per Greenworks' support FAQ, a blinking red light is a fault with the battery or charger, while a solid red light usually means the battery is too hot or too cold to charge. Try the 1-minute reset sequence in the steps above, and check your charger's manual, since other models may differ.
Can I charge my Greenworks battery in cold weather?
Not when it is too cold; lithium-ion batteries will not charge outside the charger's allowed temperature range. Allow the battery to warm to room temperature before charging.
How do I know if my battery is defective?
If the battery fails to charge after cleaning the terminals and ensuring proper temperature, it may be defective.
Is there a way to extend the life of my Greenworks battery?
Yes, avoid deep discharges, store it in a cool, dry place, and charge it at room temperature to extend its lifespan.
What should I do if my charger is not working?
Test the charger with a different battery. If it still doesn’t work, the charger may need replacing.