Battery Bank - 22.5w 18650 cells

Boost MePlease boost me if you like my designs and would like to see more.

Parts required

• 3D Printed parts
• 6x M2-4mm Brass heated inserts
• 6x M2x4mm screws
• 1x 22.5w charging module from Aliexpress LINK

 

 

 

 

 

 

 

 

 

 

 

•  

Assembly Instructions

• Print the Base, Lid, Menu Button and LCD washer

• Insert the 6 brass inserts using a soldering iron

  Insert Menu button

• Insert USB LCD charging module so that the button touches the 3D printed button, then CAREFULLY lay it on the 2 screw posts. The board will be aligned with the guide pin. (Screen is very delicate….ask me how I know!)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Use the two M2-4mm screws with the 3D printed triangular LCD Washer

   

   

   

   

 

 

 

 

 

 

 

• Insert 5x 18650 cells into 18650 guide all in parallel (preferably with positive to the left, I did it backwards)

• Spot-weld nickel strips to cells to create a large 3.7v battery
• Insert battery into case and solder on positive and negative wires from the USB board
• Tape the temperature sensor onto one of the cells
• Depending on the fit, you may need a bit of foam tape to hold the battery secure. In my case, the back panel creates a tight fit and there's no wobbling inside.
• Use four M2-4mm screws to screw on the back panel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Caution - Delicate LCD Screen!

The LCD screen is delicate. I accidentally broke this while designing the case, I had accidentally dropped a battery cell on the screen.

But don't worry, Once installed into this case, the screen will be safe.