Michaux velocipede and electrical grid: what they have in common

1. Step 1. Michaux velocipede — evolved from — Drais’s running machine. Michaux added pedals to the front wheel.
2. Step 2. Drais’s running machine — works like — Kick scooter. A kick scooter and a running machine both move by pushing off the ground with a foot and have no drive.
3. Step 3. Kick scooter — evolved into — Electric scooter. A kick scooter with a motor.
4. Step 4. Electric scooter — has part — Lithium-ion battery. A lithium-ion battery.
5. Step 5. Lithium-ion battery — is part of — Grid battery storage. Lithium-ion modules.
6. Step 6. Grid battery storage — is part of — Electrical grid. Storage balances the grid.

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