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Old 05-23-2020, 10:48 PM   #3
DuckieTigger
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Posts: 4,763
Karma: 246906703
Join Date: Dec 2011
Location: USA
Device: Oasis 3, Oasis 2, PW3, PW1, KT
Quote:
Originally Posted by Ico View Post
Hi,
Just wanted to check with You guys if these specifications are safe for long term charging the Kindle.
I have a different adapter that is 5VDC--1000mA compared to this 5VDC--550mA.
The 1000mA is a Xiaomi one(so not quite sure about output quality).
So far I kept it on my computer an let it charge on the usb port but I would rather have it in my room, because waiting for it to reach at least 50% near the computer amounts getting no reading done at all, since I lose track of time by being near the computer.
I did survey the other threads but that output mA confuses me since everybody mentions that it should be 5V but I can't find anything more than that.
Thank You for reading.

Here is the pic
http://imgur.com/a/0yHRxn4
Your picture shows the standard maximum 5V@500mA output for USB 2.0. In theory, if adhering 100% to USB, a port should limit the output to 100mA (or 150 mA for USB3.0) unless the device requests up to 500mA (or 900mA for USB3.0). Anything higher requires non complient (proprietary) communication, and a fast charger certified for your specific brand and model is strongly adviseable. Unless you use USB-C, which standardizes fast charging up to 100W (20V@5A) if and only if device, cable, and charger are rated for 100W.

Kindles only do USB2.0, so you are safe long term with the 5V@500mA charger.
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