92c57dad_smål__FAQ_s____3M_ESPE_Danmark__Solution
[Problem] The power level display of the handpiece flashes red while the handpiece is in the charger. [Possible Cause] Charging problem. The battery is defective or at the end of its useful life. [Solution] 
Replace the battery.
Ofte stillede spørgsmål (FAQ’s) - 3M ESPE Danmark
Solution