推荐回答（5个）
小米手机可以更换电池。
小米手机可以去小米公司授权的售后服务点更换电池，根据手机机型的不同更换电池的价格也有所不同，可以在小米官网查询需要更换电池机型的价格。
小米手机查询更换电池价格步骤如下：
1、打开电脑，百度搜索关键字“小米官方网站”，打开搜索中的小米官网，如下图所示。
2、进入小米官网之后下拉找到“售后政策”，点击进入，如下图所示。
3、找到“小米保外维修物料价格查询”，点击旁边的“了解详情”，如下图所示。
4、选择需要更换电池手机的型号，输入网页上的图片验证码数字即可查询到更换电池的价格，如下图所示。
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首先安装小米4手机关机键，把手机关机。
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接着使用吸盘附在手机后盖上，然后用力拉吸盘将后盖打开。
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手机后盖取下后，将中壳上的螺丝使用十字螺丝刀取下。
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中壳螺丝取下后，移除中壳就可看到里面的主板。
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接着使用塑料棒，将电池排线，显示排线、尾插排线扣取下。
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排线扣取下后，将贴在电池上的保护贴撕开，然后拆显示排线、尾插排线。
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使用热吹风机对电池进行吹热，然后使用撬片在电池的两端慢慢的将电池取下。
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电池取下后，将新电池贴上胶带，安装新电池。
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然后按照拆机的过程对手机进行安装，最后就是开机检测阶段。
一般保修期内可以找小米之家或者小米官方授权的维修点更换电池，如果过了保修期可以找外面的维修店维修更换。自己换难度比较大，还要拆机，需要专业工具。
嗨！
小米手机3采用的是一体成型的机器，电池是不可以更换的。
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