Wehmeyer says aspirin is acetylsalicylic acid, which eventually breaks down into acetic acid. Acetic acid attacks the positive lead dioxide plates in the battery and permanently damages them, leading to short battery life. This may show a small, temporary increase in capacity but will quickly kill the battery.
In this way, we can reduce the impact of old batteries on the environment by 50%. As the end result, the planet will be healthier and you will not have to pay a lot of money for a brand new battery simply because it is very expensive. Note that desulfation using a battery regenerator (battery reconditioner) can be done at any time. It can help improve batteries that are even as young as 1-2 years old.
If your battery has been in storage for a long time, reconditioning-battery.weebly.com two or three manual recontion cycles may be required to rejuvinate the battery.