Ikintu kigaragara cyane muri batiri ya Lead-acide ni uko hari igifuniko cya plastiki gishobora gufungurwa hejuru, kandi hejuru yacyo hari imyenge.Iyi capa yo gutera inshinge ikoreshwa mukuzuza amazi meza, kugenzura electrolyte, no gusohora imyuka.Mubyukuri, Bateri ya Acide-acide ikeneye kugenzura ubwinshi n’amazi ya electrolyte muri buri kubungabunga, hanyuma ukongeramo amazi yatoboye niba hari ikibazo kibuze.