[robocat]

Lead Acid batteries must get replaced every few years.

An equivalent LiIon battery would not need to be replaced so quickly.

So at some crossover point the environmental cost of X * recyclable Lead acid batteries is higher than LiIon batteries.

[catlikesshrimp]

Absolutely. Lead acid will be replaced with another chemistry. My concern is only about the environment. I developed the post some more

https://news.ycombinator.com/item?id=40878252