[evgen]

If you are going to count hydrogen emission as a problem for a lead-acid battery then you should be honest and point out that lithium batteries of all varieties have a habit of failing in spectacularly combustible ways.

[chiph]

Sorry - my last sentence wasn't dramatic enough. "Failure mode more like a fireworks factory burning, than the Hindenburg exploding"

[Dylan16807]

Wait, are you using the Hindenburg as the worse outcome? Most of the people on it survived, and a 90 second fire is by no means an explosion.