A Guide to Avoiding Common Pitfalls When Using Alkaline Batteries: Prevent Leaks from Damaging Your Electronics

Many people have encountered white powder in the battery compartments of appliances and rust on the contacts, which is mostly caused by battery leakage. Understanding the proper way to use alkaline batteries can effectively prevent these issues and protect your appliances.

First, never mix new and old batteries, nor use batteries of different brands or types together. Since the internal resistance of new and old batteries differs, old batteries may be reverse-charged, causing internal pressure to rise and leading to leakage. Disposable alkaline batteries must never be recharged; recharging can cause gas buildup and swelling, posing a safety hazard.

If an appliance will not be used for an extended period, be sure to remove the batteries. Even after a battery is fully discharged, internal chemical reactions continue, making it easier for the electrolyte to breach the seal and leak. Leaked alkaline electrolyte is corrosive; if it comes into contact with your skin, rinse immediately with clean water. Do not wipe away the white powder in the appliance’s battery compartment with your bare hands.

For storage, alkaline batteries should be kept in a dry environment at room temperature; there is no need to refrigerate them. Keep them away from high temperatures and direct sunlight; do not store batteries in hot locations such as inside a car or on a windowsill, as high temperatures accelerate aging and shorten the shelf life. When purchasing, check the production date and prioritize products with a longer remaining shelf life.

Dispose of used mercury-free alkaline batteries as “other waste” according to household waste sorting guidelines. Following these steps will ensure stable power supply and minimize property damage caused by battery leakage.