在(zai)實(shi)際(ji)(ji)使用中(zhong)，經過多年的(de)(de)(de)(de)(de)實(shi)驗(yan)(yan)室和(he)(he)現(xian)場的(de)(de)(de)(de)(de)研究，人(ren)們發現(xian)電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)導(dao)值與實(shi)際(ji)(ji)放電(dian)(dian)(dian)(dian)所得到的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)池(chi)(chi)容量(liang)結(jie)果非常吻合，它(ta)們之間(jian)存在(zai)一(yi)個(ge)非常好的(de)(de)(de)(de)(de)線(xian)(xian)性關(guan)(guan)系，就是(shi)說，如果能(neng)(neng)測(ce)出電(dian)(dian)(dian)(dian)導(dao)值，就能(neng)(neng)相應地預測(ce)出電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)(de)放電(dian)(dian)(dian)(dian)容量(liang)。由于測(ce)試(shi)電(dian)(dian)(dian)(dian)壓(ya)值和(he)(he)電(dian)(dian)(dian)(dian)解(jie)液(ye)比重(zhong)對(dui)于了解(jie)電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)(de)情況(kuang)都(dou)不(bu)可(ke)靠，實(shi)際(ji)(ji)的(de)(de)(de)(de)(de)放電(dian)(dian)(dian)(dian)測(ce)試(shi)實(shi)驗(yan)(yan)既(ji)耗費精力、時(shi)間(jian)、又(you)昂貴，而目前內阻的(de)(de)(de)(de)(de)測(ce)試(shi)結(jie)果與放電(dian)(dian)(dian)(dian)實(shi)驗(yan)(yan)所得到的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)池(chi)(chi)容量(liang)結(jie)果不(bu)是(shi)直接的(de)(de)(de)(de)(de)線(xian)(xian)性關(guan)(guan)系，所以(yi)，電(dian)(dian)(dian)(dian)導(dao)測(ce)試(shi)成為解(jie)蓄電(dian)(dian)(dian)(dian)池(chi)(chi)健康情況(kuang)的(de)(de)(de)(de)(de)