Bosch eBike Charging Station with Sonoff Switch

Built on @felix's model to simplify usage and enable me to create some automations.

I used a Sonoff S31 which enables me to monitor energy consumption and remotely turn the power on/off.  I use ESPHome (on the S31) and HomeAssistant to track power consumption, and automatically shut off the power to the charger when it completes charging.  I also use that to trigger a notification to my phone to unplug the bike.

I also simplified the wiring - uses everything “off the shelf” no creating your own outlet/cable.

Materials

3D printed parts:

• Remixed:
  • Main compartment
  • Lid
• Original model:
  • Plug holder
  • Plug holder lock

Components:

• Bosch eBike charger (assume you have that already :) )
• SONOFF S31 WiFi Smart Plug with Energy Monitoring (amazon) 
• Short right angle IEC320 C7 power cable (I used a 3ft model I had lying around) (amazon)
• 3 Prong Extension Cord - just about any should do (amazon)
• Wall screws with anchors as needed

Assembly / Installation

1. Print the main body
   1. Remove any supports
2. Insert the plug holder from the side, lock in place with “lock”
3. Slide the Sonoff S31 from the inside of the case
   1. Toggle button should be facing outward
   2. Metal prongs face down to bottom of case
4. Thread the extension cable in from the “back” of the case
5. Connect S31 to extension cable
6. Slide in Bosch charger from the top - should hold everything together nicely
7. Connect charger to S31 via the C7 power cable
8. Add top cover and snap in place

Modified to accommodate a Sonoff S31 Relay / Energy monitoring plug within the enclosure.  Also made other minor tweaks (e.g., remove requirement for splicing your own power cable, can accept basic extension cord).

• Expanded width to accommodate
• Removed outlet at top of the box
• Added support structure for Sonoff S31
• Added opening for extension cord passthrough (back of case)