› #9 of 30 · Power
Lithium-ion battery
Storing energy for every device
Comes after #8 Nuclear reactor
Build the real thing
3D print
3D-printed or paper cell cutaway
3D-print or fold a paper cutaway of one cell: two electrodes, the separator between them, and the electrolyte that lets lithium ions move from side to side as the cell charges and discharges.
- Cost
- $ · Under $25
- Time
- One session
- Screens
- No screen needed
For the grown-up
Models only. Never cut open, puncture or crush a real lithium cell: it can catch fire or explode.
Build it in bricks
Brick build comingPalm-size
Step-by-step brick booklets land one model at a time, starting with the Starter Five.
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