While looking for uses for old disposable AA batteries, I ran across the Batteriser from 2015. Clearly, it was a flop of some sort, as I am posting in 2024. What happened? Are there any iterations that do work?
https://money.cnn.com/2015/06/02/technology/make-battery-last-longer-batteriser/index.html
https://en.m.wikipedia.org/wiki/Batteroo_Boost
Also, are there any uses for old batteries?
Not leaking would be huge. I forgot about that. Lithium are great for not leaking, but crazy expensive.