Retrofalg GPI Case - LiPo battery adapter (no mod version)
thingiverse
1st Thing, 1st 3d design, i hope you ll enjoy it. There is holes on both sides of the frame, you can use metal plates or just a piece of desolder wick to make contact on + and - in the GPI. Then just solder with a piece of wire the one who touch the bottom spring to "OUT -" on the printed circuit board and the other to "OUT +" on the pcb. On it, B+ goes to the battery positive wire (red) and B- to the battery negative wire (black) Don't forget to use electrical tape to protect your solders from short circuits (see pictures) It was designed for Type-c USB 5 V 1A 18650 TP4056 printed circuit board.
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