Ngenxa yokuthi umthamo webhethri, ukumelana kwangaphakathi, i-voltage namanye amanani epharamitha akuhambisani ngokuphelele, lo mehluko udala ukuthi ibhethri elinamandla amancane kakhulu lishajwe kalula futhi lishajwe ngesikhathi sokushajwa, futhi umthamo webhethri omncane kakhulu uba mncane ngemva kokulimala, ungene emjikelezweni ononya. Ukusebenza kwebhethri elilodwa kuthinta ngokuqondile izici zokushajwa nokukhipha ibhethri lonke kanye nokuncipha komthamo webhethri.Umsebenzi we-BMS ngaphandle kwebhalansi imane iyiqoqo ledatha, okungelona uhlelo lokuphatha.Umsebenzi wakamuva wokulinganisa osebenzayo we-BMS ungathola ubuningi obuqhubekayo bokulinganisa obungu-5A. Dlulisela ibhethri elilodwa elinamandla aphezulu ebhethrini eliphansi lamandla, noma usebenzise iqembu eliphansi kakhulu lokusabalalisa amandla ngenqubo eyodwa yokusabalalisa kabusha. isixhumanisi sokulondoloza amandla, ukuze kuqinisekiswe ukuhambisana kwebhethri ngezinga elikhulu kakhulu, kuthuthukiswe imayela lempilo yebhethri futhi kubambezele ukuguga kwebhethri.