Yes discharging bare tabbed cells to less than 1v at around 1 amp ie automotive bulb is safe but the cell may get hot. This procedure is best done outside and after checking with meter 12 hours later if negligible voltage found when open circuit 1 hour later then proceed with careful slash / salt water method. Cell will bubble for a bit but then is moderately safe and unlikely for water saturated layers to then combust. Leave 24 hours minimum to ensure maximum safety and avoid contact with contaminated salt water or battery components.
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