Isahluli sebhetri ye-Fiberglass kukwahlula phakathi kwebhetri yomzimba kunye ne-electrolyte, eyona nto idlala indima yokuba wedwa, ukuqhuba kunye nokwandisa amandla ebhetri. Isahluli sebhetri asikwazi nje ukuphucula ukusebenza kwebhetri, kodwa nokuphucula ukusebenza kokhuseleko lwebhetri, ukuqinisekisa ukusebenza okuzinzile kwebhetri. Izinto zokwahlula ubukhulu becala yi-fiberglass, ubukhulu bayo ngokuqhelekileyo yi-0.18mm ukuya kwi-0.25mm. Isahluli sebhetri yeFiberglass njengenxalenye ebalulekileyo yebhetri, idlala indima ebalulekileyo kwibhetri. Iindidi ezahlukeneyo zokwahlula iibhetri zineenzuzo zazo kunye nokungonakali kwaye zifanelekile kwiimeko ezahlukeneyo zesicelo. Ukukhetha i-fiberglass efanelekileyo yokwahlula imathiriyeli yebhetri ayiphuculi nje ukusebenza kwebhetri, kodwa ikwanciphisa amathuba okonakala kwebhetri, oko konyusa ubomi benkonzo kunye nokhuseleko lwebhetri.