Sailfish X (F5121) USB charging very slow [answered]
asked 2017-10-14 14:21:50 +0300
Anyone else having very slow charging when the phone (F5121) is connected to a computer?
If I charge the phone from the original Sony mains adapter, I get a current reading of about -1400 mA in the CSD Tool's Device Status. The battery gets charged in a normal speed.
When I connect the phone to my MacBook's USB3 port, I only got about -210 mA charging current. Which takes a very long time to charge. Also it seems to change by itself, now that I checked again it went down to only -16 mA (and then back to -200)!
The USB settings is set to charging only.
I test with Jolla1/Xperia and the same port/usb cable. - Jolla1 starts to charge and after 2-3min is getting -270mA - -380mA - Xperia starts to charge, then after 2-3 is getting -200mA - -220mA. After 15 minutes charging current reaches -340mA values.
molly ( 2017-10-14 15:15:57 +0300 )edityou know that USB provides only upto 500mA - do you? You can try hook the phone to other device - perhaps the problem is not in the phone?
deloptes ( 2017-10-14 23:12:33 +0300 )editYeah, but I was kinda expecting that modern phones would charge faster over USB... or at least closer to that 500mA.
In my case I think the problem was that it was charing at only about -20 mA and not higher. Hasn't done it again so it may have been just a glitch.
MystIsland ( 2017-10-14 23:21:35 +0300 )editYou must deduct the current that the phone uses to function from the 500 mA. Therefore if the display is lit the battery could not be charging at all.
Giacomo Di Giacomo ( 2017-10-14 23:40:01 +0300 )editSame scenario here, when XPeria is low on battery and you plug it into a computer USB2 port, sometimes even my USB3 port isnt enough to keep the phone alive (let alone charge it); so its a wall plug, 15-25W Apple wallplug that does the magic 1-5Amps i think.
XFish ( 2017-10-15 08:54:58 +0300 )edit