This method may not work on all batteries, particularly rechargeable or lithium types.
Avoid over-soaking or submerging batteries to prevent leakage or corrosion.
Always dispose of batteries properly when they can no longer hold a charge.
Variations
Vinegar Substitute: Some people use a few drops of vinegar instead of salt for a similar effect.
Multiple Batteries: This method can be tried on multiple batteries at once, but always dry each battery completely before reuse.
FAQ
Q: Can this fully recharge a dead battery?
A: No, this may only restore partial power and extend the battery’s life temporarily.
Q: Is it safe to use in all devices?
A: Use caution. Test restored batteries in low-power devices first.
Q: Can this method be used on rechargeable batteries?
A: No, rechargeable batteries require proper charging equipment. This is only for single-use alkaline or carbon-zinc batteries.
