Charging issue - Redmi Note 9 Pro Max Questions & Answers

It takes 2hour to full charge my note 9 pro max with 33w charger,how can i charge it in around 70min?

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UCH10 Fast charging not working

I have just bought the UCH10 from Sony to try out on the fast charging, its seems charging at the same rate as a regular 2.1A Charger.. Anyone facing this issue?
finoqq84 said:
I have just bought the UCH10 from Sony to try out on the fast charging, its seems charging at the same rate as a regular 2.1A Charger.. Anyone facing this issue?
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I don't know about the UCH10, but I know with my Powergen charger I see it going into HV (fast charge) mode. (The charger I have has an indicator for when it's in 9v mode).
However, I have noticed this device's thermal throttling is pretty aggressive. You need to let the thing idle if you expect it to charge at any reasonable rate thanks to the Snapdragon 810 being a power hog.
Confimed the UCh10 charger fast charge working
Only got 13% from 1% for 15mins
What happened!!
Mine came with the UCH10 charger and am using my short Sony usb cable that came with my headset (EC300). I went from 4% to 100% in 1 hour and 35 mins. At the end of the day with my bluetooth headset and smart watch conneted all day (12 hours) moderate use emails,mms,calls. I have about 42% remaining. It only seams to be getting better with each charge. Today it went from 5% to 100% in 1 hour and 22 mins.
Perheps Sony's fast charging is to speed up overall charging at a faster rate. As i was from Note 5, its charging takes only 10 mins to jump from 5% to 38%!!
Perheps they are both using different fast charging tech?
finoqq84 said:
Perheps Sony's fast charging is to speed up overall charging at a faster rate. As i was from Note 5, its charging takes only 10 mins to jump from 5% to 38%!!
Perheps they are both using different fast charging tech?
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Both are using the same under different names. Samsung named it "Adaptive fast charging" and the rest use qualcomm's name "Quick charge".
For example mine is in the box with standard 1.5 normal charger, but I am using the charger from my dead note 4 (yes it is a quick charger one) which is charging z5p at the same speed like my note 4. Also I am monittoring the charge rate, and I can confirm that samis Adaptive charger charging at max using qualcomm's quick charge standard our z5p devices.
Edit:
If note 5 charging so fast it must be another tech from Samsung (or wrong battery stats - believe me I experienced these few times on my note 4 during flashing AOSP roms).
Cheers
Edit 2:
I can remember that note 4 when stock (tw) is charging much more aggressively during initial charge (upto around 50%, and then it just slow down), while AOSP is fast charging constantly (lower rate compared to samis stock tw rom) but use quck charge upto 90-95%.. It is a setting at the end. Yoi can force set this with custom kernel.

slow charging

Ok so tmobile lg g8 wont charge up above 980ma current regardless of the charger or cables used and regardless of the battery level. So basically charging at less than 4 watts total. My one plus 6t will do at least 12 to 15 watts low battery charging.
What gives???
You might have a defective unit. I don't have any measurements, but my T-Mobile unit charges quickly with both OEM and third party chargers.
Ok did a test in stock charger took 1 hour 42 minutes to fully charge. Whats anyone else getting?
madcowintucson said:
Ok so tmobile lg g8 wont charge up above 980ma current regardless of the charger or cables used and regardless of the battery level. So basically charging at less than 4 watts total. My one plus 6t will do at least 12 to 15 watts low battery charging.
What gives???
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Could be the Optimized charging option in Setting/Battery. Uncheck and try again. This will slowly charge the phone to prevent unnecessary overheat and prolong the battery lifespan.
That option was turned off
madcowintucson said:
Ok did a test in stock charger took 1 hour 42 minutes to fully charge. Whats anyone else getting?
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Hi
I've not got the phone but as the charger isn't a proprietary one like Huawei and OnePlus the average charging time is about right. I had the HTC U11+ which had the same charger Quick Charge 3.0 and took over 1 hour 30 to charge.
Currently have an OnePlus 6T and the charger we get will charge the phone in over an hour.
madcowintucson said:
Ok so tmobile lg g8 wont charge up above 980ma current regardless of the charger or cables used and regardless of the battery level. So basically charging at less than 4 watts total. My one plus 6t will do at least 12 to 15 watts low battery charging.
What gives???
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Click to collapse
Are you measuring the charge rate with the screen on? If so then that's your problem. Charging is limited to 5W when the screen is on to limit heat buildup. You'll need something like 3C battery monitor to record the rate when the screen is off. I've attached an example of my V40 charging on my Anker Powerwave 7.5 stand. With a wired fast charger it tops out at 2600ma.View attachment 4750253
Sent from my LM-V405 using Tapatalk

20 x Not charging properly.

I am getting a very slow charging rate. I have plugged in a device that shows USB volts and amps coming out of the USB port. I am getting a maximum of 5.22 volts and 1.9 amps when charging anywhere from 30% to 99%. It varies, but these are the maximums. I Plugged the charger in through a Watt Meter and it read a consistent 9 Watts. This is much different from the 22.5 Watts advertised. I registered the charging rate from 31% to !00% as follows.
Start 31%
30 min 38%
60 min 58%
90 min 87%
120 min 97%
125 min 100%
Is this normal or is my 20x charging very slowly?
I purchased a second authentic 20x charger and got the same results.
Possible issue wuth your device, without checking the wattage etc but my phone charges up very quickly as it has since day 1
Will someone PLEASE run a charge test from 30% to 100% and record 30 minute intervals and tell me if my charge rate recorded above are normal or not?
I also dont have issue in charging
Are you using a 5A cable?
yes
terryneely said:
yes
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If it says "speed charging " or something like that it works fine. I noticed it can also be the theme that will show just "charging" but the charge is still the same does not affect it
Sent from my EVR-L29 using Tapatalk

Question S22 Base Charging Confusion / Poor Charge Speed

I have had my S22 base for about a week, and while I am still concerned with the life I'm getting (same apps and usage pattern, about 4+ hours of SOT and 15 hours of mixed use) vs the S9, I had decided to keep it until ...
I can't get the thing to super/fast charge. I do not have a Samsung charger (waiting until I get my voucher) but do have a number of 15W and 25W PD-compliant chargers that work on everything from my S9 to my laptop. Unless I turn the phone off, all of those chargers charge S22 at a rate of 10-20% per hour, with Accubattery readings in the 200-1100 maH range, NEVER a value over that. The battery temp and voltage are well in spec. It is currently plugged into my laptop PD compliant charger at a rate of 900 mA with a "time to 100%" of 30h.
Likewise, I bought 2 car chargers that are S21 certified as well as QC3.0 and PD3.0. It has a 30W port. I used the cable that came with either charger (I've tried a ton of cables) and sometimes it gives a "0mA" reading while other times it goes 200mA-800mA at a good voltage. That means while I don't lose charge, I also don't gain. On my 30 min drive home I went from 23% to 24% with dark mode and no apps running.
Finally, to extend the mystery, depending on which aftermarket charger I use the phone itself thinks I'm Fast Charging or Super Fast Charging, reporting that on the lock screen and battery screen. On that screen it says something like 30m to 100% even though the observed charge rate is much lower.
Samsung won't talk to me unless I'm using a Samsung charger and I can't wait until I get the voucher/those are in stock ... I have 5 days to return it and unless you can help me (Obi Wan) I'll be back on that track.
icewiz1 said:
I can't get the thing to super/fast charge. I do not have a Samsung charger
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I use my old 25W (original from N10+) charger and it takes about 1 hour to charge from 15-20% to full. I have the DevCheckPro app showing me at the start 17-18W and about 6-7Amps of charge load initially, at the beginning.

Watch 3 pro charger specs?

hello everyone,
what kind of charging brick are you using to charge your watch 3 pro(max volts/amps...?) and how much time does it take to fully charge?
my new watch 3 pro takes 7 hours to charge using 5 volts/2 amps xiaomi brick or my pc usb port!! BUT charges pretty fast when using a huawei fast charge brick 5 volts/2 amps with a maximum of 40 watts(a switching power adaptor)!

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