How to Reuse Old Batteries with Salt: A Simple DIY Hack

If youโ€™re tired of constantly buying new batteries, this salt-based hack can potentially revive your old ones, extending their life for a while. While this trick wonโ€™t make them as good as new, it can provide temporary use for batteries that have lost their charge.


Why It Works

This method works because saltwater acts as a conductive electrolyte, which helps revive the chemical reaction inside the battery, restoring some of its lost power.


What You Need

  • Old Batteries: AA, AAA, or similar non-rechargeable batteries (alkaline batteries work best).
  • Salt: 1-2 tablespoons of table salt.
  • Warm Water: 1 cup.
  • A Small Bowl or Container: For the saltwater solution.
  • Towel or Cloth: To dry the batteries.

Instructions

  1. Prepare the Saltwater Solution:
    • Fill a small bowl with 1 cup of warm water.
    • Add 1-2 tablespoons of salt and stir until fully dissolved.
  2. Soak the Batteries:
    • Remove any corrosion from the battery terminals using a cloth.
    • Place the batteries in the saltwater solution for about 30-60 seconds.
    • Ensure only the base of the battery touches the solution, avoiding full submersion.
  3. Remove and Dry the Batteries:
    • Take the batteries out of the solution and dry them thoroughly with a towel or cloth.
    • Ensure thereโ€™s no remaining moisture to prevent short circuits.
  4. Test the Batteries:
    • Insert the batteries into a low-energy device (like a remote control or clock) to check if theyโ€™ve regained some charge.

Important Notes

  • Safety First: Never attempt this with rechargeable or lithium-ion batteries, as they can become hazardous when exposed to water or salt.
  • Temporary Solution: This method is a temporary fix and works best for batteries that are not completely dead.
  • Dispose Properly: Once the batteries stop working, dispose of them responsibly at a battery recycling facility.

Conclusion

This saltwater trick is a clever way to breathe temporary life into old alkaline batteries. Itโ€™s not a permanent solution, but it can save you in a pinch and reduce waste. Try it out the next time your batteries lose their charge, and you might be surprised at how much life they have left! ?โœจ