[windowsrookie]

Lead-acid is the better battery for something that is going to sit fully charged for long periods of time.

[jotm]

Laptops have proven Li-Ion works well enough, too

[orev]

Laptops typically get replaced every 3-4 years, and a major requirement for them is to be lightweight. Lead acid batteries are far more economical for applications where weight is not a concern.

[nwah1]

Asbestos is still unbeatable for fire protection.

[dylan604]

Nah, PFLOS is more deadly, so thereby making it better