Njengengxenye eyinhloko yokugcina amandla esimanje kanye nokunikezwayo, amaphakethe ebhethri asebenza ngokuhlanganisa imikhakha eminingi, okuhlanganisa i-electrochemistry, isilawuli se-elekthronikhi, nokuphathwa kwe-thermal. Umsebenzi wabo oyisisekelo ukuguqula amandla amakhemikhali abe amandla kagesi futhi bathole ukuphuma okuzinzile ngokuphathwa okuhlelekile. Asetshenziswa kakhulu ezimotweni zikagesi, iziteshi zamandla okugcina amandla, kanye nezinto zikagesi eziphathwayo.
Ngokwesakhiwo, iphakethe lebhethri liqukethe amaseli amaningi axhunywe ochungechungeni noma ngokuhambisana ukuze ahlangabezane nezidingo zamandla kagesi ahlukahlukene kanye namandla. Phakathi nenqubo yokushaja nokukhipha, iseli ngalinye libhekana nokusabela kwe-redox yangaphakathi: ngesikhathi sokukhishwa, i-electrode engalungile ikhipha ama-electron futhi i-electrode enhle iyawadonsa, ikhiqize amandla kagesi. Ngesikhathi sokushaja, inqubo yokuhlehla iyenzeka, ngomthombo wamandla wangaphandle oshayela ama-electron emuva ukuze kubuyiselwe izinto ezisebenzayo zebhethri. Le nqubo incike ku-electrolyte ukuze iqhube ama-ion, kuyilapho isihlukanisi sivimbela ama-circuits amafushane phakathi kwama-electrode amahle namabi.
Umongo wephakethe lebhethri likusistimu yalo yokulawula ibhethri (i-BMS), esebenzisa izinzwa ukuqapha amapharamitha afana ne-voltage, i-current, kanye nezinga lokushisa ngesikhathi sangempela ukuze kuqinisekiswe ukuthi iseli ngalinye lisebenza ngaphakathi kwebanga eliphephile. I-BMS ibhalansa ngendlela eguquguqukayo inkokhiso yeseli ngalinye ukuze ivimbele ukushajwa ngokweqile, ukukhipha ngokweqile, noma ukushisisa okweqile kwasendaweni, ngaleyo ndlela inwebe impilo yonke. Ngaphezu kwalokho, isistimu yokuphatha okushisayo ilawula izinga lokushisa ngomoya noma ngokupholisa uketshezi ukuze kuvinjwe ukuwohloka kokusebenza noma izingozi zokuphepha ezibangelwa amazinga okushisa aphezulu.
Phakathi nenqubo yokuguqulwa kwamandla, iphekhi yebhethri ikhipha amandla e-DC ukushayela ngokuqondile umthwalo noma iguqulelwa kumandla we-AC wegridi nge-inverter. Kuzinhlelo zamandla avuselelekayo, iphakethe lebhethri lingaphinda ligcine amandla engeziwe futhi liwakhulule ngesikhathi sokufunwa okuphezulu, ukuthuthukisa ukonga kwamandla.
Ngokuthuthuka kwezobuchwepheshe, amasistimu amasha afana-namabhethri e-state aqinile-namabhethri e-lithium{1}}esibabule athuthukisa kancane kancane ukuminyana kwamandla nokuphepha, aqhubekisela phambili okokusebenza kwebhethri ekusebenzeni okuphakeme kanye nokuhlakanipha okukhulu, okuwenza ingqalasizinda ebalulekile yamanethiwekhi wamandla azayo.