Well, basically I bought a good battery it was working fine, and lasting for a long time on a single charge. After like 40-50 cycles or so, I left it without charging and it drained to zero. Now, I can't charge the phone (I use wall charger). It shows only the battery red line sign and a cable, and when I plug it in, it only shows the red lining battery.

  1. I tried keeping it overnight on charging (I use wall charger, because I know it is stronger).

  2. I also tried going into DFU mode, but to no avail. No use. It can actually go to iTunes and iTunes detects the phone, and I can actually restore the phone, but after it finishes it resets and the same happens - red lining battery sign.

  3. I tried keeping the battery on red hot sun and after it almost melts from the heat I wait one minute to cool off and then I put it in phone, same result.

What else can I do?

  • 1
    Send the battery back.
    – Tetsujin
    Jun 16, 2017 at 13:01
  • You think it's bad for sure? I once had the same problem (actually I posted a question about it here on SO), and after 3 hours or so, it turned on. Thought it might be similar with this one though, seems like not. Jun 16, 2017 at 13:04
  • Well, either the battery's bad, the phone's bad, or the replacement job was bad. It's hard to do more than speculate.
    – Tetsujin
    Jun 16, 2017 at 13:09
  • Have you tried a known good cable? I've had cables which looked physically OK, but which didn't work because of invisible flaws.
    – IconDaemon
    Jun 16, 2017 at 13:21
  • Yeah, I tried a very good cable, and also an original one. I will give up any moment now and throw the battery away, and just buy a new one. I think the problem is battery, because I have another one which works fine, but is probably a Chinese copy, so drains much more quickly than that last one. Works anyway. Jun 16, 2017 at 13:37

1 Answer 1


As mentioned in comments, first check the cable is good.

After that, analysis isn't easy without the right tools.

Your potential fail-points are

  1. The battery's bad
  2. The phone's bad, or
  3. The installation wasn't done properly.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .