Surgical switch mode power supply and surgical DC power tool

Surgical DC power tool comprising:

• a housing,
• a DC power consumer accommodated in the housing,
• an interface for a mains-independent energy source,
• a surgical switch mode power supply for converting the surgical DC power tool to run on AC power, said power supply comprising:
• a switch mode power supply circuit arrangement adapted to be connected to an AC power source,
• a switch mode power supply housing,
• a circuit receptacle formed in the housing of the switch mode power supply for accommodating the circuit arrangement of the switch mode power supply, and
• a switch mode power supply interface disposed on the switch mode power supply housing adapted to directly abut and engage with the interface of the DC power tool provided for the mains-independent energy source,
• wherein the surgical switch mode power supply is adapted to be removably inserted into an energy supply receptacle of the DC power tool, the surgical switch mode power supply interface engaging with the interface of the DC power tool within the receptacle.