Motorized drug delivery device with charging safety feature

Drug delivery device, comprising:

• a drug-filled cartridge, or a compartment adapted to receive the drug-filled cartridge, the drug-filled cartridge comprising a body portion, an axially displaceable piston, and a distal outlet portion adapted to be arranged in fluid communication with a flow conduit,
• an expelling assembly comprising:
• a rechargeable electric power source,
• an electrical connector allowing an external connector of an external power source to be connected for recharging the power source,
• an axially displaceable piston drive member adapted to engage the piston of the drug-filled cartridge,
• a motor for driving the piston drive member in a distal direction to thereby expel drug from the drug-filled cartridge, and
• electronic controller for controlling the motor,
• wherein the electronic controller is adapted to detect an indicative condition of the external power source being connected to the electrical connector and subsequently disable the expelling assembly to thereby prevent that drug can be expelled from the drug-filled cartridge when the external power source has been connected to the electrical connector.