Inombolo yemijikelezo yebhethri ifika ezikhathini ezingu-3000, impilo yesevisi ingafinyelela iminyaka engu-7-8, futhi impilo yebhethri ye-thelithium yinde.Ngaphezu kwalokho, awukho umphumela wenkumbulo ngaphakathi kwebhethri ye-lithium, futhi ukushaja nokukhipha ukusebenza kahle kwebhethri ye-lithium ngeke kuthinte ukusebenza kahle isikhathi eside.