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聚合物锂电(dian)(dian)池(chi)(chi)的形(xing)状(zhuang)可(ke)任(ren)意定制，超薄(bo)电(dian)(dian)池(chi)(chi)可(ke)微造，如0.25mm。因此，具有聚合物锂电(dian)(dian)池(chi)(chi)的移动(dong)电(dian)(dian)源在外(wai)观(guan)上也(ye)可(ke)以设(she)(she)计得(de)更(geng)加灵活。现在很多智能可(ke)穿戴设(she)(she)备的电(dian)(dian)池(chi)(chi)都使用锂聚合物电(dian)(dian)池(chi)(chi)。这样可(ke)以使产(chan)品(pin)在外(wai)观(guan)设(she)(she)计上更(geng)加时尚。

18650电(dian)池(chi)(chi)的(de)外(wai)形是(shi)(shi)固定的(de)，在电(dian)池(chi)(chi)领域是(shi)(shi)低的(de)。与5号电(dian)池(chi)(chi)类似。一(yi)般(ban)来说，它(ta)的(de)外(wai)壳是(shi)(shi)圆(yuan)柱(zhu)(zhu)形的(de)钢，内部是(shi)(shi)液态(tai)的(de)锂离子电(dian)解质。18850型电(dian)池(chi)(chi)只能看成一(yi)根柱(zhu)(zhu)子。如果你购(gou)买的(de)移动电(dian)源要粗而(er)大的(de)形状(zhuang)，基(ji)本(ben)上可以确(que)定使用的(de)是(shi)(shi)18650电(dian)池(chi)(chi)。

相同体积的聚合(he)物锂电(dian)(dian)(dian)(dian)池(chi)和(he)18650电(dian)(dian)(dian)(dian)池(chi)，聚合(he)物具有更大容(rong)(rong)量，约高出30%。如果购(gou)买大容(rong)(rong)量的便携式电(dian)(dian)(dian)(dian)源，好(hao)选择聚合(he)物电(dian)(dian)(dian)(dian)池(chi)，更轻便便携。18650电(dian)(dian)(dian)(dian)池(chi)的容(rong)(rong)量比较小，18650电(dian)(dian)(dian)(dian)池(chi)的容(rong)(rong)量一般需要(yao)看2200mAh、2400mAh和(he)2600mAh三种(zhong)规格(ge)，使(shi)用18650电(dian)(dian)(dian)(dian)池(chi)的移动(dong)电(dian)(dian)(dian)(dian)源，基本是以(yi)上几(ji)种(zhong)规格(ge)。可(ke)以(yi)想象，8000毫(hao)安(an)时+ 18650便携式电(dian)(dian)(dian)(dian)源，它(ta)的形(xing)状必须比较大。

聚合物锂电池(chi)(chi)比18650电池(chi)(chi)的(de)循环(huan)充(chong)放(fang)(fang)电高1000次以上(shang)，容(rong)量(liang)无明显(xian)降低。18650蓄电池(chi)(chi)循环(huan)充(chong)放(fang)(fang)电500次以上(shang)，容(rong)量(liang)减少30%左右。

聚合物锂(li)电(dian)池(chi)外(wai)涂(tu)(tu)一(yi)层铝膜，再涂(tu)(tu)上高(gao)强度胶布，不会爆炸(zha)，多只会鼓气，坏的(de)(de)(de)情况(kuang)是产(chan)生燃(ran)烧和火亩。因此，与18650相比，聚合物电(dian)池(chi)还是很灵活的(de)(de)(de)。由(you)于18550电(dian)池(chi)包装(钢(gang)壳)的(de)(de)(de)特殊(shu)性，很容易(yi)发生短路，如果生产(chan)的(de)(de)(de)产(chan)品质量不达(da)标，大(da)的(de)(de)(de)风险(xian)是爆炸(zha)。