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Check a battery's charge level by dropping it, without a meter

Check without a meter whether a battery is still full by dropping it upright onto a hard surface.

Time
⏱ 1 min
Difficulty
◆ easy

What you need

  • hard, flat surface
  • battery

How to do it

  1. Hold the battery upright and drop it from a height of about 15 cm.
  2. Let it land on the tabletop and watch whether it bounces or falls over.
  3. Compare several batteries with each other.

Variations

  • This test has not been tried on rechargeable batteries.

Sources

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