Quick answer
- The meaning of a red light depends on the charger. On a Husqvarna QC80, a flashing red light means the battery is too hot or too cold. A steady red light means a permanent charger error, so contact your dealer.
- On a BLi-X charger, flashing red means a charging or communication error. Unplug the charger, wait 2 to 5 minutes, and reconnect it.
- Husqvarna's QC80 manual says to charge at an ambient temperature between 41°F and 104°F (5°C to 40°C).
- Inspect the charger and battery for visible damage or corrosion, which can prevent charging.
- If the battery still won't charge after these checks, it may need replacement or servicing.
Symptoms
When a Husqvarna battery is not charging, you may notice:
- The charger's charging LED flashing red or glowing steady red.
- The battery not powering the tool at all, or powering it intermittently.
- No light at all on the charger, which points to the outlet or the charger.
Quick checks
- Temperature: make sure the battery and the air around the charger are between 41°F and 104°F (5°C to 40°C). If the pack is cold or hot, let it come to room temperature.
- Charger: look for frayed cords or burnt connectors. Find your charger's model on its label, since the LED meanings differ between the QC80 and BLi-X families.
- Battery condition: look for swelling, corrosion, or punctures. If you find any, do not use the battery.
- Connection: make sure the battery is seated in the charger and the contacts are clean.
- Power source: test the outlet with another device.
Step-by-step fix
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Remove the battery from the tool and charger.
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Read the LED against your charger's manual. On a QC80, flashing red is a temperature problem and steady red is a permanent charger error. On a BLi-X, flashing red is a charging or communication error.
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If it is a temperature problem, let the battery and charger rest at room temperature, then reinsert the pack.
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If it is a BLi-X charging error, unplug the charger for 2 to 5 minutes, reconnect it, and try again.
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Test the battery in another charger, or try another battery in this charger, to see whether the charger or the pack is the problem.
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Clean the contacts on the battery and the charger with a soft, dry cloth.
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Replace the battery if it still will not charge.
If it still isn't working
- Warranty: check your warranty documentation, and contact Husqvarna or the dealer you bought from.
- Service: a Husqvarna dealer can test the battery and charger.
- Replacement: if repair is not practical, replacing the battery may be the most effective solution.
Source
The LED meanings and the 41°F to 104°F charging range come from Husqvarna's QC80/QC250 operator's manual. The BLi-X steps come from Husqvarna's BLi-X charger support page. Other Husqvarna chargers can differ, so check the manual for yours.
FAQ
What does a flashing red light on my Husqvarna charger mean?
On a QC80, flashing red means the battery is too hot or too cold. On a BLi-X, it means a charging or communication error. Find your charger's model on its label to know which applies.
Can I charge my Husqvarna battery in cold weather?
Husqvarna specifies charging between 41°F and 104°F (5°C to 40°C). Warm a cold pack to room temperature first.
How can I tell if my Husqvarna battery is dead?
If it will not charge after the steps above, and it shows visible damage or fails in a second charger, it is likely dead and should be replaced.
Is there a way to reset my Husqvarna battery?
Husqvarna's BLi-X support page suggests unplugging the charger for 2 to 5 minutes before retrying. Otherwise, a Husqvarna dealer can test the battery.
What should I do with a swollen battery?
Do not use or charge a swollen battery. Swollen or damaged lithium-ion packs are not accepted in most retail drop-off bins. Take it to a household hazardous waste facility.