危險(xian)，一般不(bu)(bu)建議(yi)這(zhe)樣用(yong)，雖(sui)然(ran)沒有(you)脈(mo)沖(chong)功能(neng)的(de)(de)充電(dian)(dian)器(qi)，理論(lun)是(shi)可以給鋰(li)電(dian)(dian)池(chi)(chi)充電(dian)(dian)的(de)(de)，但是(shi)依然(ran)可能(neng)會傷害鋰(li)電(dian)(dian)池(chi)(chi)，雖(sui)然(ran)鋰(li)電(dian)(dian)池(chi)(chi)有(you)保護板(ban)，理論(lun)過充或者過放時(shi)(shi)候能(neng)起到保護作用(yong)，如果充電(dian)(dian)時(shi)(shi)經(jing)常(chang)觸發過充保護電(dian)(dian)壓(ya)(ya)(ya)，那(nei)這(zhe)個充電(dian)(dian)器(qi)的(de)(de)輸出電(dian)(dian)壓(ya)(ya)(ya)設(she)置(zhi)就(jiu)不(bu)(bu)正確(que)。發生(sheng)這(zhe)樣的(de)(de)現象后(hou)(hou)，那(nei)落(luo)后(hou)(hou)的(de)(de)電(dian)(dian)池(chi)(chi)永遠落(luo)后(hou)(hou)。有(you)保護板(ban)也盡量不(bu)(bu)要高。因為電(dian)(dian)池(chi)(chi)在電(dian)(dian)池(chi)(chi)盒里使(shi)用(yong)，平時(shi)(shi)是(shi)看不(bu)(bu)到電(dian)(dian)池(chi)(chi)的(de)(de)一致性狀(zhuang)態(tai)的(de)(de)，不(bu)(bu)知什么時(shi)(shi)候，萬一它(ta)的(de)(de)一致性出問題(ti)了(le)，這(zhe)時(shi)(shi)電(dian)(dian)壓(ya)(ya)(ya)又高了(le)幾V。那(nei)電(dian)(dian)池(chi)(chi)就(jiu)要倒大(da)霉了(le)。

實際上，鉛酸蓄電池充電器為了克(ke)服鉛(qian)酸的(de)大(da)內(nei)阻,在(zai)(zai)恒流充電(dian)時(shi)把(ba)充電(dian)電(dian)壓(ya)(ya)提(ti)高了5%左右(you),也(ye)就(jiu)是(shi)(shi)說就(jiu)是(shi)(shi)你選(xuan)用了一樣(yang)(yang)電(dian)壓(ya)(ya)充電(dian)器，給鋰電(dian)池供電(dian)時(shi)候，電(dian)壓(ya)(ya)會高出來一點(dian)的(de)，因為鉛(qian)酸的(de)內(nei)阻大(da)，恒流充電(dian)為了達到效率都是(shi)(shi)在(zai)(zai)恒流時(shi)把(ba)恒壓(ya)(ya)電(dian)壓(ya)(ya)升高，這樣(yang)(yang)對鋰電(dian)池是(shi)(shi)很(hen)不利的(de)。

主要是鉛酸電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)過程中有二個電(dian)(dian)(dian)壓(ya)(ya)(ya)點會析(xi)氫和析(xi)氧，析(xi)氧電(dian)(dian)(dian)壓(ya)(ya)(ya)點為13.8V，析(xi)氫電(dian)(dian)(dian)壓(ya)(ya)(ya)點為14.7V，所以鉛酸充(chong)電(dian)(dian)(dian)器的高恒壓(ya)(ya)(ya)定(ding)在14.7V*塊(kuai)數(shu)；低恒壓(ya)(ya)(ya)（浮(fu)充(chong)電(dian)(dian)(dian)壓(ya)(ya)(ya)）定(ding)在13.8V*塊(kuai)數(shu)。

鋰電(dian)(dian)池保(bao)護板(ban)(ban)的(de)保(bao)護電(dian)(dian)壓(ya)點如果是(shi)4.2V,那放心使用(yong)(yong),無非就不(bu)要恒壓(ya)而已充電(dian)(dian),但普通的(de)保(bao)護板(ban)(ban)啟(qi)動電(dian)(dian)壓(ya)時(shi)4.25V,加上+/-0.035V的(de)誤差,不(bu)是(shi)很(hen)安全吧? 18650可能沒多(duo)(duo)大(da)事,鋁(lv)殼大(da)單體難說了(le)，很(hen)多(duo)(duo)鋰電(dian)(dian)池使用(yong)(yong)的(de)是(shi)正常(chang)普通的(de)保(bao)護板(ban)(ban),保(bao)護板(ban)(ban)截止保(bao)護電(dian)(dian)壓(ya)4.25V ，所以這(zhe)個保(bao)護在關鍵時(shi)候可能會起不(bu)到作用(yong)(yong)。

鋰電(dian)池內阻小，比如13串鋰電(dian)池也就是48伏(fu)(fu)，截止電(dian)壓要控制(zhi)在54.6伏(fu)(fu)因為，而鉛酸(suan)電(dian)池恒流截止電(dian)壓是57.9伏(fu)(fu)，高出幾伏(fu)(fu)了(le)。

當然，鉛(qian)酸(suan)電(dian)(dian)池如(ru)果(guo)改(gai)進一(yi)下是(shi)可以(yi)(yi)給鋰電(dian)(dian)池充電(dian)(dian)的(de)(de)，比(bi)如(ru)去(qu)掉低(di)(di)恒(heng)壓階(jie)段電(dian)(dian)路和脈沖電(dian)(dian)路，是(shi)可以(yi)(yi)用的(de)(de)。如(ru)果(guo)你如(ru)果(guo)觀察(cha)鋰電(dian)(dian)的(de)(de)充電(dian)(dian)曲(qu)線，可以(yi)(yi)發現在恒(heng)流(liu)階(jie)段充入約(yue)為96%的(de)(de)總容(rong)量；恒(heng)壓減流(liu)階(jie)段只充入4%的(de)(de)容(rong)量，如(ru)果(guo)轉燈就拔時，那鋰電(dian)(dian)已經充入了(le)99.5%的(de)(de)容(rong)量了(le)。所以(yi)(yi)鉛(qian)酸(suan)充電(dian)(dian)器充鋰電(dian)(dian)，也就是(shi)少了(le)最后的(de)(de)均衡和浮充那0.5%的(de)(de)電(dian)(dian)量而已。將鉛(qian)充的(de)(de)高低(di)(di)恒(heng)壓都低(di)(di)調點(dian)，就都可以(yi)(yi)給鋰電(dian)(dian)充電(dian)(dian)了(le)，只不過(guo)充不滿(man)而已。不過(guo)鋰電(dian)(dian)又(you)不會硫化，充不滿(man)就充不滿(man)吧，又(you)不影(ying)響(xiang)使用，壽命還會延(yan)長呀(ya)。

還有一個方法，打開外殼，把(ba)三極管(guan)C極串聯(lian)那個電阻阻值提升(sheng)10倍,恒流(liu)只提升(sheng)0.5%電壓(ya)(ya),再調節下恒壓(ya)(ya)點,盡量(liang)做到每(mei)一個電池電壓(ya)(ya)均衡到4.18V左右為好。