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Time Estimate

Select a difficulty level for this entire task (including any prerequisite instructions). The difficulty ranking reflects the experience, physical dexterity, and risk involved.

Very easy

Does not require opening device.


Requires minimal disassembly and requires only basic tools like a Phillips or flat-head screwdriver.


Requires a fair amount of disassembly. This is a task that most people would not perform without instruction.


Requires significant disassembly and may require specialized tasks like soldering.

Very difficult

This task is considered quite challenging, may require specialized tasks like micro-soldering, and may risk damage to the device. If you can do this, people may call you MacGyver on occasion.

If your guide picks up where an existing guide leaves off, add the existing guide as a prerequisite to avoid having to write additional steps. Prerequisite guides will be displayed before this guide. Make sure that the prerequisite guides are in the correct order. You can change the prerequisite order by dragging the icons to the left of the guide's name.

  • 1 × Soldering Workstation
  • 1 × Lead-Free Solder
  • 1 × Utility Scissors
  • 1 × Phillips #0 Screwdriver
  • 1 × Slip Joint Pliers
  • 1 × Flush Cutter
  • 1 × File Set
  • 1 × Sand Paper
  • 1 × Multimeter
  • 3 × 14500 LiFePO4 Battery, Soshine N4 700mAh LiFePO4high constant power output (I had success with batteries having a continuous discharge:10C and pulse: 20C)
  • 1 × 8A 9.6V PCB BMS Protection Board for 3 Packs 18650 LiFePO4 LiFe Battery Cell 3S, T-5016A15I picked the one with highest current I could find, since the Rollei has a high draw if switched on.
  • 1 × Nickel-plated Hilumin metal strips
  • 1 × Electrical Tape in 6 Assorted Colors
  • 1 × Thin Electrical Wire
  • 1 × Foam
  • 1 × Glue Gun
  • 1 × For Tray: 3D Printer, Socket, Pins/Small nails
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