There are several ways to clean battery corrosion, depending on the severity of the corrosion and the type of battery. Here are some methods:

1. Rubbing alcohol: Isopropyl alcohol is a safe and effective way to clean electronics without leaving behind moisture and other residue. Wear protective gloves and use a pencil eraser, microfiber cloth, and/or compressed gas to clean up any fibers shed by the cotton swabs.

2. Baking soda and water: This is a good neutralizing solution to clean battery corrosion. Mix the solution, dip a rag, and wipe corrosion away rather than dumping the solution over the battery top to prevent solution from leaking into the device.

3. White vinegar: Soak a cotton swab in white vinegar and use it to remove battery leaking. Rinse with sterile water after that, and use 90%+ isopropyl alcohol to displace any leftover water.

4. Battery terminal cleaner: This is a commercially available product designed to clean and neutralize corrosion from your battery. It’s a spray-on solution that changes color as it reacts with corrosion.

When cleaning battery corrosion, it is important to wear protective gloves and eye protection to avoid skin and eye damage. Additionally, make sure the device is powered off and remove the battery from the vehicle or device before cleaning it.