DFUN yi khukhuriwile hi xitshunxo xa ku langutisisa tibetiri ta lead-acid xi seketela vulawuri bya tibetiri ta 2V na 12V FLA, leswi endlaka leswaku yi faneleka ngopfu eka tisisiteme ta gezi, vutleketli, na indasitiri ya tisemikondukta. Sisiteme yi nyika vulawuri bya xiyimo xa mati, ku lemukisa loko mpimo wa mati wu wela ehansi ka mpimo wa ntolovelo. Ku engetela kwalaho, loko ku humelela ku khuluka ka betri, hi ku hatlisa yi rhumela marungula ni ku kombisa ndhawu leyi ku khulukaka eka yona.