There's a new, obscure means to bring nearly ANY dead battery back life once more.
I have actually currently tried it with automobile, laptop computer, and phone batteries that were completely dead. You can just replace your old batteries and save a lot of cash. https://smiletraveling.com/2024/11/13/the-forbidden-truth-about-recondition-battery-charger-unmasked-by-a-vintage-pro/