Segway i2, X2 Remote 1200mAh Lipo battery upgrade with USB-C and QI Wireless Charging

Tired of having to swap 3V coin cell batteries on your Segway X2/i2 remote?

This design converts the Segway InfoKey to a 1200mAh lipo battery with 500mA USB-C and QI wiress charging.

• Takes 1h15m to print on the MK4 with InputShaping
• The internals are simple components from Adafruit. It does require some soldering.
• Everything is fitting tightly and fixed in place with superglue or epoxy
• Full charge is around 2 Hrs.
• Cover the PCBs with epoxy or glue for better weather resistance
• Lanyard Hole

There is a LED indicating status

• RED            Charging
• GREEN      Fully Charged
• RED+GREEN         Battery Error

Printing:

There are two passes:

• Body and lid - Solid filament
• Lens - Transparent filament for the LED Lens/lightpipe

I used Prusament PETG with my MK4 with Input shaping, 0.2mm layer height. 

For body and lid: Organic automatic paint on Supports (under the ring bridge and the usb-c connector opening)
I used 40% infill, 3 perimiters, except bottom layer 1 perimeter for better QI logo.

For lens I used Transparent PETG, 100% infill, concentric, no support, lens top facing plate.

Components:

3.3V Regulator for regulating voltage to emulate 3Vbutton cell battery
https://www.adafruit.com/product/4711

USB-C LiPo 500mA charger
https://www.adafruit.com/product/4410

1200 mAh LiPo battery
https://www.adafruit.com/product/258

Universal Qi Wireless Receiver Module
https://www.adafruit.com/product/1901

Small gauge wire: 4 x approx 10cm - 1 x approx 3 cm

Superglue or epoxy