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Samsung Galaxy Note Pro 12.2 (1, 2) bought used for diversity of Android tests during app development. Died suddenly a year later.

Would still like to keep it running. It now has no sign of life when plugged in, but because the battery was still holding a 3-hour charge when last used, I suspect that the sudden death is not caused by the battery. The battery would have dwindled more slowly.

  1. Net chatter suggests that the USB connector is prone to breaking. Have you been there? Is this repairable?
  2. I am content to use it with the power cord attached. Yet replacement battery sellers suggest that presence of a working battery is necessary. Have you been there? Can you confirm one way or the other?

I used the 10.1 tag because the 12.2 is identical in build quality (or lack thereof) to the 10.1. Your experience with the Samsung Galaxy Note pro 10.1 is likely very relevant.

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  • afaik you need a real DC current (not just a pulsed DC from AC-DC Power Supply) best stable solution is always battery – alecxs Aug 6 '19 at 14:47
  • @alecxs Interesting. So the device is sold with a modest adapter, and the battery acts as a super-large capacitor? Does this happen often? – Calaf Aug 6 '19 at 15:06
  • battery is not used as capacitor. but simplyfied, yes it's a common design to use power supply just for charging purposes, while the current is taken from battery only. buy this maybe it is sufficient for your needs aliexpress.com/item/32858352800.html – alecxs Aug 6 '19 at 15:16
  • maybe interesting too: some batteries can be boosted by heating a little. once you get it above ~2.2 volts the device should start charging again android.stackexchange.com/a/145155 – alecxs Aug 6 '19 at 15:40
  • @alecxs That's new. I'm assuming heating up to maybe 60C, not much more. What's a safe way to do it? More importantly, Could the battery have died suddenly? Doesn't sudden death mean that something else failed? – Calaf Aug 6 '19 at 15:53

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