This is something I think everyone has done, when your TV, AC any remote stops working and once you hit it few times against any hard surface that remote miraculously comes to life for atleast few chances. How does that happen?
Subjecting nearly dead alkaline batteries to mechanical shock can actually get a little bit more capacity out of them. You shouldn’t go hammering them though, the warning about damaging batteries on the sleeving is there for a reason.
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