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Do sealed PbA batteries vent?

2459 Views 5 Replies 5 Participants Last post by  helluvaengineer96
I was sitting in the hot tub and this crossed my mind: Do seal lead-acid batteries vent hydrogen when they charge/discharge?
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Sealed PbA can vent when you overcharge them. When sealed PbA vent it is bad news, as there is no way to replace the vented hydrogen gas; it is important that this gas is preserved for the battery's recombination process. Floodeds vent, and because of it, you must periodically water them. There is no way to water sealed batteries.
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