Inside a Battery

Lithium-ion and friends

An interactive lesson with 4 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Li-ion: Li⁺ shuttles between graphite and a metal oxide.
• Energy (Wh) = capacity (Ah) × voltage (V).

Steps

1. The rocking chair
2. A phone battery
3. Why rechargeable?
4. An electric car