pianotuna wrote:
Hi philh,
Batteries don't "boil" unless the temperature inside them is 337 C (~638 f). They do gas.
The device you suggest may cause both positive and negative plate shedding. Basically it "knocks" the hard sulfate off the plates. That buys some time--but the total capacity (amp hours) drops and once the space beneath the plates fills up the battery has had the biscuit.
Here is an example of one such device. I really DO NOT recommend it.
https://www.instructables.com/id/Simplest-Chargerdesulfator-Ever/
That's what I built. It definitely bought time, battery appears to be as good as new. Wonder how many uses before the battery is unusable :)
Gave it to a friend that has a very expensive custom battery... something like $250 for his classic cougar. He wants to keep using the replica battery as long as possible. It worked for him too.
