Hey Scotty! Love your videos. I’ve learned a lot. I’ve seen people put videos up climbing to make a battery last longer by connecting a DC welder to the battery and making it boil. Is there any truth to this?
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Not really.
There are claims that strong currents can help de-sulphate crystalized electrodes, or mix up a stratified electrolyte solution. Basically, it is an attempt at squeezing a bit more life out of already degraded batteries. But data is sparse, and shows inconsistent results.
The most important aspect of what you are talking about is the EXPLOSION DANGER. When charging batteries to the point of making the electrolyte boil, they are evolving significant amounts of explosive hydrogen gas. Batteries are well known for exploding rather violently, louder than a shotgun, and spraying boiling hot corrosive acid everywhere, which is why they are plastered in warnings about keeping sparks away. Welders are designed to make sparks.
In my opinion, this risk isn't worth the small (if any) benefit. If your battery isn't performing any more just replace it.
Hey Scotty! Love your videos. I’ve learned a lot. I’ve seen people put videos up climbing to make a battery last longer by connecting a DC welder to the battery and making it boil. Is there any truth to this?