I can answer your first question.
1) Yeah, you can use a replacement power supply that's up to 10% higher or lower than the requested power supply (4.5v-5.5v), but at the extremes, it's more likely to cause problems. 5.2v isn't a problem in my estimation. (I'm an electronics technician who regularly works with microprocessors and logic circuits).
edit: Overvoltage isn't a problem unless heat is a factor, or capacitors are running too close to their limits. I don't think that Fire tablets are in danger of overheating and the capacitors are probably higher than 6.3v, so it shouldn't be a concern.
2) I'm not an Android programmer, so I can't answer this one.
3) That's something you should take up with the developer, @Datastream33.
4) This is again something that Datastream33 should be consulted about.
(I told you I could only answer the first question!) Hope it helps somewhat.
edit2: I hope this auto-translated correctly. I don't know what you're native language is.
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Hi,
the fact is that I connected the charger from the old tablet to the new one and it seemed to me that the charging was faster than from the original (new). Just in case, I decided to consult whether it is dangerous.
Thanks for the answer!
I, here recently and do not yet know all the rules, thought that I am writing, and whoever knows / wants / can answer - write answers.
That is, the developer should be contacted separately / personally?
By the way, how to do this, otherwise I have more questions)).
edit2: I hope this auto-translated correctly. I don't know what you're native language is.
Yes, everything is clear.
Thanks again!
It appears you are responding to me, although you might use the "Reply" button at the end of my post next time so it's more clear.
As far as a replacement power supply goes, the one that comes with the tablet is only rated for 10W and the tablet will use up to 15W to charge, so you can definitely speed up charging with a replacement.
Anyone can answer questions here, but if you want to address the developer directly, that would be Datastream33. You can either write a post with @Datastream33 in it and he will see it, or you can try sending him a direct message. He would probably prefer the first choice.
If you need to send a direct message, go to a post by him (the first post in this thread works if there isn't one on the current page), and hover over his name and a box will appear. Select "Start Conversation" and your message will go to him alone.