DIY Battery Replacement

Discussion in 'Smartphone & Tablets Discussion / Support' started by IvanV, Jun 22, 2020.

  1. IvanV

    IvanV HH Assassin Guild Member

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    I've had my Xiaomi Mi 5s for 2 years and 9 months and, of course, the battery is not what it is. Since I thought I'd pass it on to my mom when I get something new, I got a replacement battery from eBay and, having watched 4 YouTube videos on disassembling this particular phone, I gave it a go.

    What went wrong:
    After removing the two T3 torx screws, when I tried to use a suction cup to pull the bottom section from the back cover, I pulled off just the screen instead.

    How I fixed that:
    I reattached the screen with some thin double sided tape and then used a plastic pry tool and a "guitar pick" to remove the cover, unscrewed some protective metal sheet and unplugged the battery. Then I tried to remove the battery, which was held in by some really strong tape.

    What went wrong:
    I applied too much local pressure on the battery while trying to pry it out and it caught fire, still firmly attached to the phone!

    How I fixed that:
    I threw it on the kitchen counter and covered it with a small glass bowl. I tried to seal the edges with some tea towel and waited a bit. Then, as the bowl kept filling with smoke, I remembered that Li-Ion batteries can burn without oxygen, so I slid it into a pot and took it out to the balcony. There I left it for a few minutes, and then it occurred to me to check if the heat loosened the adhesive holding battery. It did. I carefully (so as not to burn myself) removed the battery from the phone and left it outside. The phone itself seemed fine, other than that it was scorching hot, so I left it to cool down and then installed the new battery and powered it on. It works! :D

    More luck than smarts, I guess. It is a rather simple procedure, but if you've never done anything like it, you have good chances of making a mess. And out of the 4 videos I watched, even though they are generally speaking similar, after my own experience, I can say that only one is actually really good.
     
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  2. Tyrsonswood

    Tyrsonswood HH's curmudgeon

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    Yeah... Somewhere in here, somebody missed the "Do not attempt this at home" warning...
     
  3. IvanV

    IvanV HH Assassin Guild Member

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    In the words of Chernobyl engineers, I don't see what can go wrong.

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