Directly charging over-discharged li-ion cells with my bench supply. Definitely nothing unsafe going on here.
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It's a myth that water is a terrible idea for lithium-ion fires. Yes, it reacts, but a large amounts of water wins vs. a small battery.
The goal isn't to somehow stop the stored energy from being released, it's to dissipate it and stop everything else from catching fire.
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Also the water-lithium reaction is mostly a problem with lithium *primary cells* (contain metallic lithium), not li-ion (do not).
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