My Ninebot ES2 had a poor battery life recently, it was found that two cells of the battery could not be charged, so I decided to replace it.
English sub include
我的九号滑板最近续航很差，经过排查发现其中两组电芯无法充电，于是决定更换内置电池。

00:10 Tools will be used 需要用到的工具
00:14 Disassemble Tips 拆解
01:22 Tips to unlock the waterproof lid 拆卸防水盖窍门
01:44 Now you can get the battery 取出电池
02:01 Tips to detach battery and DRV 分离电池和控制器的要点
02:21 The Bad battery 损坏的电池
02:48 Tips to assembly 组装要点

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