That's scary, I thought most lead acid batteries were vented. | Hacker News

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		cptskippy on April 2, 2018 \| parent \| context \| favorite \| on: Laptop explodes while charging at Letchworth busin... That's scary, I thought most lead acid batteries were vented.

jacquesm on April 2, 2018 | [–]

It's because of plate deformation not because of gas. They are all vented.

c3833174 on April 3, 2018 | [–]

AGM batteries are packed with fiberglass, so when oxide starts building up on the plates because of improper charging or electrolyte drying up they start pushing on the case.

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