Battery on fire


#1

After a 5 minute drive, my 2000 Lexus(recently purchased) car stopped/ battery was flaming/cables were fried. I put the fire out(extinguisher from near-by store). Some say the “battery shorted out” is this true/possible?


#2

It could have shorted out internally, or it could have been overcharged by a bad alternator, which would cause hydrogen gas to be generated and any old spark could have triggered it.


#3

The short is much more likely than hydrogen igniting. Any accumulation of hydrogen would simply go poof! and leave no further damage. But a short circuit, entirely possible, would turn cables red hot and then they can ignite nearby plastic. A careful inspection might determine the cause of the short.


#4

Loose battery terminals can cause a fire too. Most times they won’t but it has happened. I’ve only caught a few that were smoking.