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汽车电瓶的正负极怎么区分?急!
更新时间: 2021-05-20 23:57:35  

1、正极的极柱粗一点;正极的极柱是棕色的,负极的极柱的青色的;有+-标示的,+是正极。

2、有些电瓶用旧了以后内阻变得很大,一充就满,一放就完,这种电瓶用三用表测其空载电压也是正常的。所以,不能光测空载电压,还要测它的放电电流,可用放电仪进行测量。放电时电压不低于10V是正常的,低于10V则证明电瓶可能断格,必须进行更换。加负载时电压低得越多说明电瓶内阻越大,放电特性越差。

关键词: 汽车 电瓶 负极 怎么 区分

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