Round male and female magnetic power connector manufacturers
Amazon.com: HytePro Magnetic Connector 5 Pin Pogo Contacts Male Female Pair M413 Spring Loaded 1A Carry Power Charging PCB Vertical Mount Connection for Electronic Device (10Pairs Packing) : Electronics
DIY Magnetic Connector - Right Angle Four Contact Pins : ID 5358 : $6.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Waterproof Magnetic Panel Mount Connector | 5A - 877.522.3779 - USBFireWire.com
Power Magnetic Connector | 10a Magnetic Connector | Pin Connector | Pogo Pins - 2pin 10a - Aliexpress
Connector Supplier
DIY Magnetic Connector - Straight Angle Five Contact Pins : ID 5413 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Magnetic Connectors - Rosenberger Group
Magnetic USB C Adapter 20Pins Type C Connector, Support USB PD 100W Quick Charge, 10Gb/s Data Transfer and 4K@60 Hz Video Output Compatible with MacBook Pro/Air and More Type C Devices (Grey)
15 Amp Power Connector Magcode Magnetic set Only Live When Connected 12 volt DC | eBay