Product(WX542L) NITRO 20V BRUSHLESS CORDLESS JIGSAWContinuous flashing light on the battery charger indicator
(WX542L) NITRO 20V BRUSHLESS CORDLESS JIGSAW

Continuous flashing light on the battery charger indicator

Try this solution

Reinsert the battery

Try reinserting the battery into the charger.

Possible Cause:
The battery may not be properly seated.