Wannan jeri na šaukuwa AC caja tara tester yafi yana da cajin ƙarfin lantarki auna, jagora ikon sarrafawa (sarrafawa ta hanyar caji) da sauran ayyuka, guda uku-girma gama.Ta hanyar auna ƙarfin caji, zaku iya tantance ko tarin caji yana fitowa kamar yadda ake buƙata.Ta hanyar canza canjin caji, zaku iya tantance ko tarin caji yana kunnawa da rufe fitarwa kamar yadda ake buƙata.Ƙimar takamaiman samfurin da aka nuna a cikin Hoto 1, galibi yana da daidaitaccen ƙirar AC na cajin motar mota, toshe ikon sarrafa bindiga, na'urar sarrafa caji, Mitar AC volt, abun da ke ciki na fadada tashar jiragen ruwa.