手(shou)機(ji)電(dian)池(chi)(chi)(chi)最(zui)常見的類型有(Li-ion)鋰(li)離子(zi)(zi)(zi)電(dian)池(chi)(chi)(chi)、鋰(li)聚合物超薄電(dian)池(chi)(chi)(chi)、NI-MH鎳(nie)氫離子(zi)(zi)(zi)電(dian)池(chi)(chi)(chi)。不同(tong)類型電(dian)池(chi)(chi)(chi)的電(dian)池(chi)(chi)(chi)門限（標志充(chong)滿/放(fang)盡(jin)的電(dian)壓）不同(tong)，其中鋰(li)離子(zi)(zi)(zi)電(dian)池(chi)(chi)(chi)有3.7V/4.3V和3.6V/4.2V之分。而市(shi)面上的“萬(wan)能手(shou)機(ji)充(chong)電(dian)器”據稱(cheng)能較好地兼(jian)容(Li-on)鋰(li)離子(zi)(zi)(zi)電(dian)池(chi)(chi)(chi)。記(ji)者采訪了一些(xie)業(ye)內(nei)人員(yuan)。他們普遍對(dui)“萬(wan)能手(shou)機(ji)充(chong)電(dian)器”表示質(zhi)疑：“采用標準的恒流(liu)(liu)轉恒壓充(chong)電(dian)方式，不同(tong)容量的電(dian)池(chi)(chi)(chi)的額定充(chong)電(dian)電(dian)流(liu)(liu)不同(tong)，最(zui)大不超過1C （C是(shi)電(dian)池(chi)(chi)(chi)容量），難道500mAh和1300mAh的電(dian)池(chi)(chi)(chi)能用同(tong)樣的電(dian)流(liu)(liu)充(chong)電(dian)？”

    當然，目前已經有更先進的快速充電方式（比如-DV/DT），具有良好的兼容性。但是要想生產出合格的產品必須采用專門的運算芯片和檢測電路，這樣的產品綜合成本沒100元別想拿下。那些賣幾十元（實際成本恐怕不到10元）的“萬能手機充電器”采用了什么新技術能自動根據不同的電池提供適合的電流和適合的門限電壓，從而達到萬能的功效呢？實在是讓人可疑！!
三大質(zhi)疑： 

質疑一： 仔細研(yan)究“萬能(neng)手機(ji)充(chong)電(dian)(dian)(dian)器(qi)”，我(wo)們發現它只有兩根(gen)輸(shu)出線(xian)(xian)，而我(wo)們知道設計(ji)完善的電(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)器(qi)至(zhi)少有三線(xian)(xian)輸(shu)出。電(dian)(dian)(dian)池(chi)中間(jian)的兩根(gen)一般是(shi)數據反饋線(xian)(xian)和溫度及告(gao)警(jing)線(xian)(xian)，大部(bu)分鋰(li)離子電(dian)(dian)(dian)池(chi)內部(bu)都(dou)有保護電(dian)(dian)(dian)路甚(shen)至(zhi)是(shi)智(zhi)能(neng)管理芯片。“只有兩根(gen)輸(shu)出線(xian)(xian)”意(yi)味著該充(chong)電(dian)(dian)(dian)器(qi)放棄了(le)電(dian)(dian)(dian)池(chi)本(ben)身具備的保護電(dian)(dian)(dian)路。也(ye)只有這樣做才能(neng)實現“廉價的萬能(neng)”。

質疑二：“許多制作精度不高的充電器都采用調低截止電壓的方式（正常截止電壓是4.2V） 。它們把門限正態分布值設置為4V左右。這樣做使充電本身安全了，但電池卻永遠充不滿。等于電池容量減少了，導致充電次數的增加，也導致了電池壽命的縮短。 
鋰離子電池非常嬌氣和敏感。鋰離子電池充電吸收效率幾乎是100%，無論是大電流過充電或者小電流夠充都能導致電池失效。所以電池門限控制可以說是充電控制的關鍵！;最佳的充電方法是直充充電器對手機進行關機充電――直充提供恒定直流電壓，再經手機內帶有精密參考電壓源、同時受軟件控制的帶溫度補償功能和數據交換功能的可編程超大規模手機電源芯片對電池進行充電，可以達到幾乎理想的效果。許多手機在軟件工程模式下還能精密調節電壓參數，精度達到0.01V。這些都是座充等其他充電方式不容易做到的，完善的蛋型充電器應包含直充的隔離、AC/DC轉換及穩壓，和座充的充電監控等所有功能。所以，這樣的蛋型充電器的成本幾(ji)乎(hu)是(shi)兩者之(zhi)和。而市面的蛋(dan)型充電器(qi)幾(ji)乎(hu)都是(shi)廉(lian)價的垃圾！”

質疑三：現在越來越多的消費者已經認識到了手機12～16小時初充電的說法不正確，這種說法是沿用以前老鎳類電池的模式。對于鋰離子電池根本不需要，甚至有害！這是因為鋰離子優點很多，但也有一個最致命缺點――非常脆弱！所以，幾乎所有的鋰離子里有安裝防止過充過放的保護電路（粗保護，更精確的保護由用電設備的電池管理電路實現）。另外，鋰離子電芯生產完成后就已經有電，不存在激活問題。為了減少電芯存放時間長而引起的容量下降，一般建議首次使用或長期存放后首次使用，采用深度放電再充滿的方式。充滿是指燈變色后多充電20～50%的時間。對于鋰離子電池，寧欠也勿飽。欠，可能導致單次輸入容量下降，過飽卻可能導致不可恢復的硬傷。
    顯然，由于鋰(li)離(li)子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池對充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)敏感，過大(da)(da)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)很容(rong)易導致(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池發熱發脹(zhang)、活性(xing)物質脫落等問題，“萬(wan)能手(shou)(shou)機充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)”不(bu)能對不(bu)同容(rong)量電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池提供(gong)不(bu)同的(de)(de)(de)和適(shi)合的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。那么安(an)全性(xing)如何保障？鋰(li)離(li)子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池對充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)、尤其是(shi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)幾個(ge)門檻電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)要求(qiu)很高(gao)，而目(mu)前幾乎所有(you)(you)蛋充(chong)(chong)(chong)都(dou)未使(shi)用精密電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)源(yuan)（比如TL431或(huo)類似的(de)(de)(de)功能單元）而只是(shi)使(shi)用精度(du)和溫度(du)穩(wen)定(ding)(ding)性(xing)都(dou)非常差的(de)(de)(de)廉價Zener管做參考電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)源(yuan)，導致(zhi)(zhi)門限電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)離(li)散性(xing)很大(da)(da)，飄移(yi)嚴重。為(wei)了避(bi)免意外，不(bu)少廠家有(you)(you)意把門限電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)調小以保障即便出(chu)現比較大(da)(da)的(de)(de)(de)正誤差也不(bu)至出(chu)現問題，導致(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池長期充(chong)(chong)(chong)不(bu)飽。缺(que)(que)乏對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池容(rong)量的(de)(de)(de)智(zhi)能檢測是(shi)所謂“萬(wan)能手(shou)(shou)機充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)”天生的(de)(de)(de)最致(zhi)(zhi)命(ming)缺(que)(que)陷(xian)。 在采訪中，記者了解到(dao)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)如果(guo)要實現“萬(wan)能”，必(bi)須(xu)具備(bei)以下特點(dian)： 1. 由于手(shou)(shou)機充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)是(shi)直接使(shi)用220V的(de)(de)(de)，它必(bi)須(xu)包含(han)手(shou)(shou)機直充(chong)(chong)(chong)（具備(bei)AC/DC轉換(huan)、并輸出(chu)穩(wen)定(ding)(ding)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)和足夠的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)）或(huo)手(shou)(shou)機座充(chong)(chong)(chong)的(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)管理電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路（充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)控制與管理及(ji)保護）的(de)(de)(de)功能。

2. 鋰離子電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)必須根(gen)據(ju)電(dian)(dian)(dian)池容量大(da)(da)小(xiao)而定。電(dian)(dian)(dian)流(liu)過小(xiao)導致(zhi)充(chong)電(dian)(dian)(dian)時間大(da)(da)幅度(du)延長，電(dian)(dian)(dian)流(liu)過大(da)(da)會導致(zhi)電(dian)(dian)(dian)池內壓增(zeng)加、發熱、結構受損，直至危害電(dian)(dian)(dian)池壽命。

3. 鋰離子電池是非常非常嬌氣的，準確和穩定的門檻電壓控制對電池壽命有很大影響。該款電池充電器并未采用足夠精度的電壓參考源電路，而且由于設計功率余量不足，充電器本身容易發熱，導致門檻電壓產生溫飄，影響充電控制精度。
4. 萬(wan)能充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)在達(da)到(dao)3.9V-4.34V（標(biao)準應該(gai)是(shi)4.2V）轉恒壓充(chong)電(dian)(dian)(dian)(dian)(dian)數小時后，充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流并未(wei)完(wan)全關(guan)死而(er)存(cun)在較(jiao)大(da)漏電(dian)(dian)(dian)(dian)(dian)流。而(er)鋰離子電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)對充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)吸收是(shi)100%的(de)(de)(de)，即便是(shi)很小的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流依(yi)然也存(cun)在過充(chong)電(dian)(dian)(dian)(dian)(dian)問題。 5. 所(suo)有原裝充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)，除(chu)了充(chong)電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)正負兩極(ji)，還有與電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)內部保(bao)護電(dian)(dian)(dian)(dian)(dian)路進行(xing)連接的(de)(de)(de)線路，以獲取電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)容(rong)量、溫度補償參數、告(gao)警保(bao)護等(deng)信(xin)息。而(er)由于廠家品牌不同，電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)/手機保(bao)護電(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)路方式有很大(da)差別(bie)。所(suo)以，現階段真正達(da)到(dao)兼容(rong)幾乎是(shi)不可能的(de)(de)(de)。 可想而(er)知，此(ci)類成本低于10元的(de)(de)(de)“萬(wan)能手機充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)”安(an)全性能有多好？ 希(xi)望(wang)各位讀者在選購(gou)的(de)(de)(de)過程中(zhong)，注意劣質產(chan)品帶來(lai)的(de)(de)(de)危害，為愛(ai)機配上一個安(an)全、實用的(de)(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)。