This adapter was not widely available and is designed to avoid battery interference.
Ego Power+ ADB1000 Pro x Battery Adapter for Backpacks
Hasselblad Carl Zeiss Sonnar 250mm F/5.6 "CF" Lens For Hasselblad 500CM etc
Hasselblad Carl Zeiss Sonnar 150mm F/4 T* Lens For Hasselblad 500CM etc
18V Lithium Battery Converter, Lithium Battery Adapter Safety Protection High Efficiency Portable for Electrical Tool
Secure Battery Adapter ，Compact Portable Dock Power Connector with Wires ，for 18V Lithium Battery
18V Lithium Battery Converter High Efficiency Lightweight Lithium Battery Adapter Black Portable for Power Tools
