UMi Z charging super slowly.

nickster558

I went to bed last night at about 1am, i woke up this morning and my UMi Z had only charged from 12% to 81% in about 10 hours of charging! So i just went to put it on charge again and it only went from 14% to 21% in about 1 hour 20 mins so i looked on here, did what someone said and turned it off for 5 mins and took sim card out, i also used compressed air in the charging port incase there's contaminents and i used it on the charger cable and the plug. When i checked AIDA64 app it said it was charging at 250mA and then was dropping to 51mA which seems really low for the original plug, right now i turned it back on and its charging faster now but i am not sure if it is correct still, now according to AIDA64 it is charging anywhere between 1790mA and 1760mA is that normal? It's varying slightly, every now and then it goes up or down but is this the correct speed it should charge at? I really like this phone i don't wanna send it back :/

Nachttier

Yes, actually the top internal values for fast charging are 12 V and ~ 1.775 mA. Starting at 66 % the current is lowered down to ~ 200 mA. Meanwhile mostly around 75 s (Up to 100 s) are needed for 1 % charge. With different metered informations (battery, cable, charger; temperature) the values could differ (being lower/slower).

Using the top values my mobile charged 0,84 minutes per %. So 100 % would need 1 h 24 m, as announced by UMIDIGI. But it's throttled and needs more time. Maybe this is because hardware protection (swelling batterys?), a MTK topic or just bad
communication during preproduction. Sadly MTK and UMI don't see the advantage of open communication.

Baki

How many users can achieve a quick charge of 30m in for 1 day of normal use and 100 min for full charge, as it is advertised?

I can not achieve this with two original chargers and two cables of which one is the stock one.

Medard22

You should take the marketing advertisement with a grain of salt, especially when it comes to from Chinese manufacturers. Anyway for me the Quick charge works pretty good. Up to 50-60% it charges 1% per minute, full charge was done after 2h15m.

Medard22

@nickster558 Please refer to this thread  http://community.umidigi.com/thread-7209-1-2.html
We were discussing fast charging issues there.

nctran

Baki replied at 2017-4-19 17:37
How many users can achieve a quick charge of 30m in for 1 day of normal use and 100 min for full cha ...

I have not tried to fully charge in 100 min but my phone can charge from 30% to full in less than an hour and a half using either the standard charger or an older one which can output 2A. I also use different USB-C cables bought from AliExpress and didn't notice any problem.