蓄电池槽体在一定的直流电压作用下，若有缺陷或材质本身电阻低，则会被击穿，用蓄电池槽或盖经受一定的交流电压作用是否被击穿表示其耐压性。
Accumulator tank in a certain under DC voltage, if any defects or material itself resistance is low, will be breakdown, battery slot or cover to withstand certain AC voltage is breakdown said its pressure resistance.