危險，一(yi)般不(bu)(bu)建議(yi)這樣用(yong)，雖然(ran)沒有(you)脈沖功能的(de)充(chong)(chong)電(dian)(dian)(dian)(dian)器，理(li)論(lun)是(shi)可以給鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)的(de)，但(dan)是(shi)依然(ran)可能會傷害鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)，雖然(ran)鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)有(you)保護(hu)(hu)板，理(li)論(lun)過充(chong)(chong)或者(zhe)過放時(shi)候(hou)(hou)能起到保護(hu)(hu)作用(yong)，如果充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)經常觸發過充(chong)(chong)保護(hu)(hu)電(dian)(dian)(dian)(dian)壓，那這個充(chong)(chong)電(dian)(dian)(dian)(dian)器的(de)輸出(chu)電(dian)(dian)(dian)(dian)壓設置就不(bu)(bu)正確。發生(sheng)這樣的(de)現象后(hou)(hou)，那落后(hou)(hou)的(de)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)永遠落后(hou)(hou)。有(you)保護(hu)(hu)板也盡(jin)量不(bu)(bu)要(yao)高。因為電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)在電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)盒里使用(yong)，平時(shi)是(shi)看不(bu)(bu)到電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)一(yi)致性(xing)狀(zhuang)態的(de)，不(bu)(bu)知什么時(shi)候(hou)(hou)，萬(wan)一(yi)它的(de)一(yi)致性(xing)出(chu)問題了(le)，這時(shi)電(dian)(dian)(dian)(dian)壓又高了(le)幾(ji)V。那電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)就要(yao)倒(dao)大霉了(le)。

實際上，鉛酸蓄電池充電器為(wei)了(le)克(ke)服鉛(qian)酸的(de)大內阻,在(zai)恒流(liu)充(chong)電(dian)時把(ba)充(chong)電(dian)電(dian)壓提高(gao)了(le)5%左右(you),也就是(shi)(shi)說(shuo)就是(shi)(shi)你選用了(le)一樣電(dian)壓充(chong)電(dian)器，給鋰電(dian)池供電(dian)時候(hou)，電(dian)壓會(hui)高(gao)出來一點的(de)，因為(wei)鉛(qian)酸的(de)內阻大，恒流(liu)充(chong)電(dian)為(wei)了(le)達到效率(lv)都是(shi)(shi)在(zai)恒流(liu)時把(ba)恒壓電(dian)壓升高(gao)，這(zhe)樣對鋰電(dian)池是(shi)(shi)很不利的(de)。

 主(zhu)要是鉛酸(suan)電池充(chong)電過程中(zhong)有二(er)個電壓(ya)(ya)點(dian)會析(xi)氫(qing)和析(xi)氧，析(xi)氧電壓(ya)(ya)點(dian)為13.8V，析(xi)氫(qing)電壓(ya)(ya)點(dian)為14.7V，所以鉛酸(suan)充(chong)電器的高恒(heng)壓(ya)(ya)定(ding)在(zai)14.7V*塊數(shu)；低恒(heng)壓(ya)(ya)（浮充(chong)電壓(ya)(ya)）定(ding)在(zai)13.8V*塊數(shu)。

鋰電(dian)池保(bao)護(hu)(hu)板(ban)的(de)保(bao)護(hu)(hu)電(dian)壓(ya)點如果是(shi)4.2V,那放心使用(yong),無非(fei)就(jiu)不(bu)要恒壓(ya)而已充電(dian),但普(pu)(pu)通(tong)(tong)的(de)保(bao)護(hu)(hu)板(ban)啟動電(dian)壓(ya)時4.25V,加上(shang)+/-0.035V的(de)誤差(cha),不(bu)是(shi)很(hen)安全(quan)吧? 18650可能沒多(duo)大事,鋁殼大單體難(nan)說了，很(hen)多(duo)鋰電(dian)池使用(yong)的(de)是(shi)正常(chang)普(pu)(pu)通(tong)(tong)的(de)保(bao)護(hu)(hu)板(ban),保(bao)護(hu)(hu)板(ban)截止保(bao)護(hu)(hu)電(dian)壓(ya)4.25V ，所(suo)以(yi)這個保(bao)護(hu)(hu)在關鍵時候可能會起不(bu)到作用(yong)。

鋰(li)電(dian)池內阻小，比(bi)如13串鋰(li)電(dian)池也就是(shi)48伏(fu)，截止電(dian)壓要控制在54.6伏(fu)因為，而鉛酸電(dian)池恒流(liu)截止電(dian)壓是(shi)57.9伏(fu)，高出幾伏(fu)了。

當然，鉛(qian)(qian)(qian)酸電(dian)(dian)(dian)(dian)池(chi)如果(guo)改(gai)進一下是可以(yi)給(gei)鋰(li)電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)的(de)，比如去掉低(di)恒壓(ya)階(jie)(jie)段電(dian)(dian)(dian)(dian)路和(he)脈沖電(dian)(dian)(dian)(dian)路，是可以(yi)用的(de)。如果(guo)你如果(guo)觀察鋰(li)電(dian)(dian)(dian)(dian)的(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)曲線，可以(yi)發現在(zai)恒流(liu)階(jie)(jie)段充(chong)(chong)(chong)入約為96%的(de)總容量(liang)(liang)(liang)；恒壓(ya)減(jian)流(liu)階(jie)(jie)段只充(chong)(chong)(chong)入4%的(de)容量(liang)(liang)(liang)，如果(guo)轉燈就(jiu)拔時，那鋰(li)電(dian)(dian)(dian)(dian)已經充(chong)(chong)(chong)入了99.5%的(de)容量(liang)(liang)(liang)了。所(suo)以(yi)鉛(qian)(qian)(qian)酸充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器充(chong)(chong)(chong)鋰(li)電(dian)(dian)(dian)(dian)，也就(jiu)是少了最后的(de)均衡和(he)浮充(chong)(chong)(chong)那0.5%的(de)電(dian)(dian)(dian)(dian)量(liang)(liang)(liang)而已。將鉛(qian)(qian)(qian)充(chong)(chong)(chong)的(de)高(gao)低(di)恒壓(ya)都低(di)調點，就(jiu)都可以(yi)給(gei)鋰(li)電(dian)(dian)(dian)(dian)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)了，只不(bu)過(guo)充(chong)(chong)(chong)不(bu)滿(man)而已。不(bu)過(guo)鋰(li)電(dian)(dian)(dian)(dian)又不(bu)會(hui)硫(liu)化，充(chong)(chong)(chong)不(bu)滿(man)就(jiu)充(chong)(chong)(chong)不(bu)滿(man)吧，又不(bu)影響使(shi)用，壽命還會(hui)延長呀(ya)。

還有一個(ge)方法(fa)，打開(kai)外殼(ke)，把三極管C極串聯那(nei)個(ge)電(dian)阻阻值提升10倍,恒流只提升0.5%電(dian)壓(ya),再調(diao)節(jie)下恒壓(ya)點,盡量做到(dao)(dao)每一個(ge)電(dian)池電(dian)壓(ya)均衡(heng)到(dao)(dao)4.18V左(zuo)右為好。