Product(WX856L) 20V POWER SHARE CORDLESS 10" POLISHER/BUFFERContinuous flashing light on the battery charger indicator
(WX856L) 20V POWER SHARE CORDLESS 10" POLISHER/BUFFER

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.