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Cloudd

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Efest bio V2 charger has a over-discharged battery recovery function (or so they say) but I think that would have changed the structure of the battery itself, I won't sub-ohm with it if I were you.

Chemistry time: Salt and vinegar makes a solution in chemical equilibrium containing hydrochloric acid, sodium acetate, sodium cholride, acetic acid and water.

If you need small amount of strong (not pure ofc) sodium hydroxide for the cleaning, use a butane torch, torch up some baking soda or scrubbing soda in a stainless steel spoon until the water it gives off dries up, forming a bright white powder. That is sodium oxide, now add the powder to water to form hydroxide. (of course you could just buy lye) <-- this is ill advised for clumsy people
 
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