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Energy
Old batteries can work again: a clever trick with an eraser
2 sourcesPublished · Updated
Experts recommend rubbing AA and AAA batteries with an eraser to extend their lifespan. The eraser acts as an effective mild abrasive that can restore contact in batteries that have unexpectedly stopped working.
Key facts
- Trick with eraser for AA and AAA batteries
- Eraser acts as a mild abrasive
- Possible restoration of battery function
batteries · eraser
Sources2
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