Do not open batteries or tamper with the chemicals inside.
Avoid prolonged soaking; water inside can damage the battery permanently.
Use gloves if desired, as saltwater can be mildly corrosive.
This method works best for alkaline batteries; rechargeable batteries may not respond the same way.
Why This Trick Works
Saltwater can help break down corrosion and improve the flow of electricity. While it doesn’t fully recharge a depleted battery, it can unlock leftover energy that was blocked by buildup on the terminals.
This simple household trick can save you money and reduce waste by giving old batteries a second life.
