![Old alkaline household batteries leak a white crusty substance made of potassium carbonate (K2CO3 Stock Photo - Alamy Old alkaline household batteries leak a white crusty substance made of potassium carbonate (K2CO3 Stock Photo - Alamy](https://c8.alamy.com/comp/FJTPC8/old-alkaline-household-batteries-leak-a-white-crusty-substance-made-FJTPC8.jpg)
Old alkaline household batteries leak a white crusty substance made of potassium carbonate (K2CO3 Stock Photo - Alamy
![Amazon.com: Duracell Optimum AAA Batteries | 12 Count Pack | Lasting Power Triple A Battery | Alkaline AAA Battery Ideal For Household And Office Devices | Resealable Package For Storage : Clothing, Shoes & Jewelry Amazon.com: Duracell Optimum AAA Batteries | 12 Count Pack | Lasting Power Triple A Battery | Alkaline AAA Battery Ideal For Household And Office Devices | Resealable Package For Storage : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/71wVApdPIWL._AC_SS450_.jpg)
Amazon.com: Duracell Optimum AAA Batteries | 12 Count Pack | Lasting Power Triple A Battery | Alkaline AAA Battery Ideal For Household And Office Devices | Resealable Package For Storage : Clothing, Shoes & Jewelry
What is the white crusty stuff that forms, for instance, in a flashlight, when the Alkaline batteries leak? How do you get rid of it? - Quora
![I found an old light I haven't used in years. Didn't work when I turned it on, and checking the batteries I saw this white stuff on a few of them. When I found an old light I haven't used in years. Didn't work when I turned it on, and checking the batteries I saw this white stuff on a few of them. When](https://preview.redd.it/fvb304n6gdp31.jpg?width=640&crop=smart&auto=webp&s=7a0d6113485cc65d7f71e572a7a7f85b1bdc3222)