Malo opangira ma 2-in-1 opanda zingwewa amagwiritsa ntchito ukadaulo wapamwamba kwambiri wowongolera.Okonzeka ndi ntchito zosiyanasiyana, monga overcurrent, overcharge, overvoltage, overheat, etc. ndi kutentha kulamulira ntchito, kuzimitsa basi, nkhani yachilendo ndi chitsulo chizindikiritso cha chinthu, etc.so mukhoza kukumana opanda zingwe kulipiritsa ndi okwana mtendere wa m'maganizo.