危險，一(yi)般不(bu)(bu)建議這(zhe)(zhe)樣用，雖(sui)然(ran)沒有脈沖功(gong)能的(de)(de)充電(dian)(dian)(dian)(dian)器(qi)，理論是可以給(gei)鋰電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)充電(dian)(dian)(dian)(dian)的(de)(de)，但是依(yi)然(ran)可能會傷害(hai)鋰電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)，雖(sui)然(ran)鋰電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)有保(bao)護板(ban)，理論過(guo)充或者過(guo)放時(shi)(shi)候(hou)能起到(dao)保(bao)護作用，如果(guo)充電(dian)(dian)(dian)(dian)時(shi)(shi)經常觸發過(guo)充保(bao)護電(dian)(dian)(dian)(dian)壓，那(nei)(nei)這(zhe)(zhe)個(ge)充電(dian)(dian)(dian)(dian)器(qi)的(de)(de)輸出電(dian)(dian)(dian)(dian)壓設置就(jiu)不(bu)(bu)正確。發生這(zhe)(zhe)樣的(de)(de)現象后(hou)，那(nei)(nei)落后(hou)的(de)(de)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)永遠落后(hou)。有保(bao)護板(ban)也(ye)盡量不(bu)(bu)要高(gao)。因為(wei)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)在電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)盒里使用，平時(shi)(shi)是看(kan)不(bu)(bu)到(dao)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)一(yi)致(zhi)性狀(zhuang)態的(de)(de)，不(bu)(bu)知什么時(shi)(shi)候(hou)，萬一(yi)它的(de)(de)一(yi)致(zhi)性出問題了(le)(le)，這(zhe)(zhe)時(shi)(shi)電(dian)(dian)(dian)(dian)壓又高(gao)了(le)(le)幾V。那(nei)(nei)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)就(jiu)要倒(dao)大霉了(le)(le)。

實際上，鉛酸蓄電池充電器為(wei)了(le)克服(fu)鉛(qian)(qian)酸(suan)的大內阻(zu)(zu),在恒(heng)流充(chong)電(dian)(dian)(dian)時(shi)把(ba)充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)提高了(le)5%左右,也就是(shi)說(shuo)就是(shi)你選用了(le)一樣(yang)電(dian)(dian)(dian)壓(ya)充(chong)電(dian)(dian)(dian)器，給鋰電(dian)(dian)(dian)池供電(dian)(dian)(dian)時(shi)候，電(dian)(dian)(dian)壓(ya)會高出來一點(dian)的，因為(wei)鉛(qian)(qian)酸(suan)的內阻(zu)(zu)大，恒(heng)流充(chong)電(dian)(dian)(dian)為(wei)了(le)達(da)到效率(lv)都(dou)是(shi)在恒(heng)流時(shi)把(ba)恒(heng)壓(ya)電(dian)(dian)(dian)壓(ya)升高，這樣(yang)對鋰電(dian)(dian)(dian)池是(shi)很不利的。

主要是鉛酸(suan)電(dian)(dian)池充電(dian)(dian)過程中有二個電(dian)(dian)壓(ya)(ya)點會析(xi)氫(qing)(qing)和析(xi)氧，析(xi)氧電(dian)(dian)壓(ya)(ya)點為13.8V，析(xi)氫(qing)(qing)電(dian)(dian)壓(ya)(ya)點為14.7V，所以鉛酸(suan)充電(dian)(dian)器的高(gao)恒壓(ya)(ya)定在(zai)14.7V*塊數；低恒壓(ya)(ya)（浮充電(dian)(dian)壓(ya)(ya)）定在(zai)13.8V*塊數。

鋰電(dian)池保護(hu)板(ban)(ban)的(de)(de)保護(hu)電(dian)壓(ya)(ya)(ya)點如果是4.2V,那放心使用(yong),無非就不要恒壓(ya)(ya)(ya)而已(yi)充電(dian),但普通的(de)(de)保護(hu)板(ban)(ban)啟動電(dian)壓(ya)(ya)(ya)時(shi)4.25V,加(jia)上+/-0.035V的(de)(de)誤差(cha),不是很安全吧? 18650可能(neng)(neng)沒多大事,鋁殼大單體難說了，很多鋰電(dian)池使用(yong)的(de)(de)是正常普通的(de)(de)保護(hu)板(ban)(ban),保護(hu)板(ban)(ban)截止保護(hu)電(dian)壓(ya)(ya)(ya)4.25V ，所以這個(ge)保護(hu)在(zai)關鍵時(shi)候(hou)可能(neng)(neng)會起不到作用(yong)。

鋰電(dian)(dian)池內(nei)阻小，比如13串鋰電(dian)(dian)池也就是(shi)(shi)48伏，截止(zhi)電(dian)(dian)壓(ya)要控制在54.6伏因為(wei)，而鉛酸電(dian)(dian)池恒流截止(zhi)電(dian)(dian)壓(ya)是(shi)(shi)57.9伏，高出幾伏了。

當然，鉛酸(suan)電(dian)(dian)池如(ru)(ru)(ru)果改進一下是可(ke)(ke)以給(gei)鋰(li)電(dian)(dian)池充(chong)(chong)電(dian)(dian)的(de)(de)(de)，比如(ru)(ru)(ru)去(qu)掉低恒壓階段電(dian)(dian)路和脈沖電(dian)(dian)路，是可(ke)(ke)以用的(de)(de)(de)。如(ru)(ru)(ru)果你如(ru)(ru)(ru)果觀察鋰(li)電(dian)(dian)的(de)(de)(de)充(chong)(chong)電(dian)(dian)曲(qu)線，可(ke)(ke)以發現在恒流階段充(chong)(chong)入(ru)約為96%的(de)(de)(de)總容量(liang)(liang)；恒壓減流階段只(zhi)充(chong)(chong)入(ru)4%的(de)(de)(de)容量(liang)(liang)，如(ru)(ru)(ru)果轉燈就(jiu)拔時，那鋰(li)電(dian)(dian)已經充(chong)(chong)入(ru)了(le)99.5%的(de)(de)(de)容量(liang)(liang)了(le)。所以鉛酸(suan)充(chong)(chong)電(dian)(dian)器充(chong)(chong)鋰(li)電(dian)(dian)，也(ye)就(jiu)是少(shao)了(le)最(zui)后的(de)(de)(de)均衡和浮充(chong)(chong)那0.5%的(de)(de)(de)電(dian)(dian)量(liang)(liang)而已。將鉛充(chong)(chong)的(de)(de)(de)高低恒壓都(dou)低調(diao)點，就(jiu)都(dou)可(ke)(ke)以給(gei)鋰(li)電(dian)(dian)充(chong)(chong)電(dian)(dian)了(le)，只(zhi)不(bu)(bu)過(guo)(guo)充(chong)(chong)不(bu)(bu)滿(man)而已。不(bu)(bu)過(guo)(guo)鋰(li)電(dian)(dian)又不(bu)(bu)會硫化，充(chong)(chong)不(bu)(bu)滿(man)就(jiu)充(chong)(chong)不(bu)(bu)滿(man)吧，又不(bu)(bu)影(ying)響使用，壽命(ming)還(huan)會延長(chang)呀。

還有(you)一(yi)個(ge)方(fang)法(fa)，打開(kai)外(wai)殼，把(ba)三極(ji)管C極(ji)串聯那個(ge)電(dian)阻(zu)阻(zu)值提升10倍,恒流只提升0.5%電(dian)壓,再(zai)調節下(xia)恒壓點(dian),盡(jin)量做(zuo)到每(mei)一(yi)個(ge)電(dian)池電(dian)壓均衡(heng)到4.18V左右為好。