Hi, i've just purchased Xiaomi mi 5 and i have question regarding charging the phone. It supports Qualcomm Quick Charge 3.0 however the charger that was provided only supports QC 2.0.
I notice that whenever i plugged the phone to the charger that supports Qualcomm Quick Charge, my phone gets hot. I decided to do a little test, so I used an USB Charger Doctor that can read voltage and Amp that it delivered to the phone. I've also using Ampere to monitor my battery temperature. I'm gonna charge for about 36 minutes using Aukey charger. It has 3 ports with only 1 that supports QC 2.0, the rest of the two supports up to 5 volts at 2.4 amps.
Here's the result:
9 volts, 1.35 amps = 56% battery charged from 8%. Battery temps reach 43,2 C. Juice added, 48%.
5 volts, 1.71 amps = 43% battery charged from 7%. Battery temps reach just about 35 C. Juice added 36%.
It's clear that qualcomm quick charge is faster than the standard port, however it resulting in higher temps. And i know the fact that Lithium batteries hate high temperature. So which is the best for battery life? Higher Voltage lesser Amps, or Lower Voltage Higher Amps? Thanks in advance.
Hey guys, just to let you all know on my findings. I have Nexus 5X charger (rated 5v 3A) and decided to try on my A1.
It goes from 63% (I think, I forgot to write down the actual %) to 100% in 45 minutes. Considering usually after 80% it will charge slowly, I think this is pretty quick time.
I'll test it again some more when the battery level is much lower and report back.
I'm on latest Oreo stable
OPR1.170623.026.7.12.29
are you measuring the charging amperage after 80%?
37% in 45 minutes isn't all that fast, imo.
I'll measure charge time tomorrow, stating start percentage and I'll look for what happens after 80%, to see how much it drops in charging amperage.
goofball2k said:
are you measuring the charging amperage after 80%?
37% in 45 minutes isn't all that fast, imo.
I'll measure charge time tomorrow, stating start percentage and I'll look for what happens after 80%, to see how much it drops in charging amperage.
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I didn't measure it's amperage, just check the time till it fully charged.
If do the math from this charge means from 0% can be fully charge in 82 minutes. That should be faster than stock charger. One caveat though, if it's really 63% and not 73% when I start charging it.
Now my phone already 2 hours SOT and almost an hour hotspot, but still left 74%. Not easy to deplete it's battery.
One more thing I forgot to mention in first post, I'm on latest Oreo stable.
xb360 said:
Hey guys, just to let you all know on my findings. I have Nexus 5X charger (rated 5v 3A) and decided to try on my A1.
It goes from 63% (I think, I forgot to write down the actual %) to 100% in 45 minutes. Considering usually after 80% it will charge slowly, I think this is pretty quick time.
I'll test it again some more when the battery level is much lower and report back.
I'm on latest Oreo stable
OPR1.170623.026.7.12.29
Click to expand...
Click to collapse
From what I read, Quick Charge would use dynamic voltage (5v-20v) instead of utilizing higher amps to attain higher wattage charging.
Use ampere app to measure current.
For better results try charging it while its off from 0 to 100.
And try while its on.
cr0ssx21 said:
From what I read, Quick Charge would use dynamic voltage (5v-20v) instead of utilizing higher amps to attain higher wattage charging.
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Click to collapse
I'm not sure if Nexus 5X charger is QC, it doesn't stated anywhere. But the amperage is higher than A1 stock charger.
alkesh95 said:
Use ampere app to measure current.
For better results try charging it while its off from 0 to 100.
And try while its on.
Click to expand...
Click to collapse
Ok I'll try it when I charge later. Now the battery still left 50%. I'll drain it another 10% at least before charging.
its still same as before.
only below 2A
Sent from my Mi A1 using Tapatalk
Alright so my battery was at 42% when I plug in the charger. Using ampere it stated Max USB Curr is 2000mA. And the reading max is 1930mA while average is about 1800mA.
After 20 minutes it have gone up to 65%. Reached 90% after 43 minutes. At exactly one hour it reached 97%, which I checked ampere reading is 440mA. 100% reached at 64 minutes.
During charging I received a call which lasted about 3 minutes, which I use loud speaker for the call, so here might have added few minutes to it's charging time.
So I guess the speed is around the same when Oreo beta is?
Start time: 0805h
Battery: 38%
Check in time: 0905h
Battery: 87%
Did see that the amperage has lowered to around 1A after the battery reached past 80%. It definitely decreases after 90%, I'll check this the next time I charge.
I can run the test again with a different usb measuring tool. This first one seems to indicate a lower voltage than my other tool by about 0.2v (and amperage by about 0.2-0.3A. Although it should just be a passthrough for the power, it may be inhibiting the power sent to the phone.
The measured amount of power sent was ~1600mAh to get the phone to 90%. That seems about right for 52%, give or take.
i try with Honor 8 Pro QC charger (9v 2a) and it goes from 0 to 78% in 60 minutes, phone was off. I don't know the total time to 100%, sry
Stayed around 1400 mA for me above 80%
goofball2k said:
Start time: 0805h
Battery: 38%
Check in time: 0905h
Battery: 87%
Did see that the amperage has lowered to around 1A after the battery reached past 80%. It definitely decreases after 90%, I'll check this the next time I charge.
I can run the test again with a different usb measuring tool. This first one seems to indicate a lower voltage than my other tool by about 0.2v (and amperage by about 0.2-0.3A. Although it should just be a passthrough for the power, it may be inhibiting the power sent to the phone.
The measured amount of power sent was ~1600mAh to get the phone to 90%. That seems about right for 52%, give or take.
Click to expand...
Click to collapse
Using Nexus 5X charger?
I got around 1800 average
Trusconi said:
i try with Honor 8 Pro QC charger (9v 2a) and it goes from 0 to 78% in 60 minutes, phone was off. I don't know the total time to 100%, sry
Click to expand...
Click to collapse
That seems faster. I got a Huawei 9v 2a charger too, I'll test it after my battery dropped below 50%.
alkesh95 said:
Stayed around 1400 mA for me above 80%
Click to expand...
Click to collapse
Stayed 1400 until full?
Using Nexus 5X charger?
xb360 said:
Using Nexus 5X charger?
I got around 1800 average
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Click to collapse
1600mAh is the amount of power that was sent to the phone, as measured by my USB measuring tool. If you're talking about amperage during charging, I get around 1.9A on average. It fluctuates between 1.85 and 1.95A, and the voltage fluctuates between 4.95 and 5.20.
This is using a Tutuo charger which is capable of QC 3.0, and also 5v/2.4A.
I've tested using the regular 2.4A port and the QC port.
Basically, this phone does not request more than 2A at most, so even a 3A charger isn't going to make a difference.
I am using stock charger only. Don't have fast charger won't buy it unless phone supports it
goofball2k said:
1600mAh is the amount of power that was sent to the phone, as measured by my USB measuring tool. If you're talking about amperage during charging, I get around 1.9A on average. It fluctuates between 1.85 and 1.95A, and the voltage fluctuates between 4.95 and 5.20.
This is using a Tutuo charger which is capable of QC 3.0, and also 5v/2.4A.
I've tested using the regular 2.4A port and the QC port.
Basically, this phone does not request more than 2A at most, so even a 3A charger isn't going to make a difference.
Click to expand...
Click to collapse
Looks like it, it won't accept above 2A. I want to try with 9v 2A charger, but after 24 hours and 2.5 hours SOT, the phone still have 75% battery.
alkesh95 said:
I am using stock charger only. Don't have fast charger won't buy it unless phone supports it
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Click to collapse
Looks like surely no point to buy fast charger for now.
How much mA you get from ampere when using the stock charger and batter is less than 80%?
xb360 said:
Looks like it, it won't accept above 2A. I want to try with 9v 2A charger, but after 24 hours and 2.5 hours SOT, the phone still have 75% battery.
Looks like surely no point to buy fast charger for now.
How much mA you get from ampere when using the stock charger and batter is less than 80%?
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Click to collapse
1700 mA -1900 mA +-50mA
Edit: since you are trying so hard.
From what i have read few years back when i had xperia zl
Incase of zl max current was capped at 1.5 A
QC 1 is 5V 2A our charger 10W
I bought Samsung 5v 2a charger for my zl. I still have it. Works fine. (Just adding history to context :laugh
QC 2 was designed to give 18W(average)
5v 2a QC1 compatibility
9v 2a QC2 18W output
12v 1.67a (from Wikipedia)
QC3 went with higher amps and dynamic voltage
Don't know anything about QC4
So give 9v 2a a try while measuring current take screenshots multiple times to track voltage since i don't know any other way to measure voltage except what ampere already shows.
PS: i know commands to read from proc and all but since i haven't rooted my device i won't ask you to go through that way.
I used lenovo charger which support 5v-2A, 7v-2A, 9v-2A and 12v-2A
Started charging 12:54 AM, battery at 4%, airplane mode activated
and these are the results
alkesh95 said:
1700 mA -1900 mA +-50mA
Edit: since you are trying so hard.
From what i have read few years back when i had xperia zl
Incase of zl max current was capped at 1.5 A
QC 1 is 5V 2A our charger 10W
I bought Samsung 5v 2a charger for my zl. I still have it. Works fine. (Just adding history to context :laugh
QC 2 was designed to give 18W(average)
5v 2a QC1 compatibility
9v 2a QC2 18W output
12v 1.67a (from Wikipedia)
QC3 went with higher amps and dynamic voltage
Don't know anything about QC4
So give 9v 2a a try while measuring current take screenshots multiple times to track voltage since i don't know any other way to measure voltage except what ampere already shows.
PS: i know commands to read from proc and all but since i haven't rooted my device i won't ask you to go through that way.
Click to expand...
Click to collapse
I tried with 9v 2A charger, still capped at 5v and almost 2000mA.
One interesting finding is using the 9v and Dash charger plus their cable give consistently almost 2000mA, whereas if using Mi charger and cable; or Dash charger and Mi cable; or Mi charger and Dash cable; all give around 1700 to 1800mA averagely. I think Mi charger and cable is of lower quality and unable to max out 2A.
The conclusion that I found is if want a slightly faster charging then use other better quality charger and cable.
FSLRMH said:
I used lenovo charger which support 5v-2A, 7v-2A, 9v-2A and 12v-2A
Started charging 12:54 AM, battery at 4%, airplane mode activated
and these are the results
Click to expand...
Click to collapse
That's as fast as when Oreo beta is. Like I suspected Mi original charger and cable unable to max out the ampere.
Thanks for all the hardwork???
This thread should be locked now and made into sticky.
Cause this is nothing short of a research on fast charging in Mi A1.
Hi There,
I just read that Mi has not opted for Quick Charge by paying royalty to Qualcomm. So they have disabled QC functions from software side, though chip is definitely capable.
By Mistake, they let Beta have QC functionality. But now that has been fixed.
We now have to find way to enable it ... If possible.
I've had my 7 Pro 8/256 for a week now and was really hoping to see USB-PD 5V3A charging. In fact, I ordered a USB-PD USB-C power bank specifically for this.
I've also tried my Aukey PA-Y10 46W Wall Charger as well. USB-PD (PDO) 5V 3A | 9V 3A | 12V 3A | 15V 3A | 20V 2.3A.
USB-C to C Cables, U Green 3ft and Aukey 3ft.
When I connect the power, it doesn't indicate "charging rapidly" as it does on Pixel 2/3. Tested using Ampere. 1.7-1.9A even when the battery is only at 20-40% Far cry from 3A max.
When connected to the Dash Charger from my OP5 with OP5 cable, I get the standard 5V4A (3.3A in Ampere) of Dash with a Charging Rapidly logo and a blue lightning bolt.
Were we lied to? The article says it is supported but there is nothing indicated during my real world testing to show it actually is any faster than using a 5V2A charger. I livechatted with OP Support yesterday and they did confirm that OP7 Pro supports 5V3A USB-PD spec but the rep didn't understand what I was asking when there was no notification for rapid charging.
https://www.xda-developers.com/oneplus-7-pro-usb-pd-hdmi-variable-refresh-rate/
yeah on my PD charger it takes 1 hour 50 to charge from 20 to 100
If you want to see the actual rate of charging, I recommend using an app called 3C Battery Monitor. I use it to keep track of my phone's rate of battery drain when using certain apps or how fast something is actually charging. In order to save battery, I only have it logging the battery usage every 10 minutes but you can set the rate to be faster.
I'm my first picture below, I was purposely draining the battery down to 1% to test out the speed of the warp charger, but it was only sampling every 10 minutes.
My second picture is set to every minute.
Give it a try to test out the PD charging as you will have actual mA/hour figures to compare.
Thanks. Confirmed today that it does do 5V3A but doesn't show as "charging rapidly" using 3C Battery Monitor.
It is about 2.9-3.0A from about 25% until 70%. From 0-25% is about 1.5-1.9A and from 70% onwards it slowly decreased until it reaches 100%.
In total from 17% to 100% took 1h 47 mins. Not exactly fast but acceptable.
With the Warp Charger, it's 0 to 100% in about 1 hour flat. With a Dash Charger, it would be about 1 hour 30.
iPhone XS Max charges 0-100% in 2 hours 20 minutes with a 2.4A adapter
Hai hello...bought mi 11 ultra ...1 week ago ....it comes with 55w charger ...and i purchased 67w charger separately ...
i dont know whats the issue ...its facing ...its charging very slowly ..with 55w charger ...it charges from 1 to 100 in 45 mins.
with 67w charger it takes nearly 45 mins to 50 mins to complete from 2 to 100 percent ...i dont know whats the issue..bought the charger on mi offical site only and they dont have return or replacement option. How these youtubers able to charger there device from 0 to 100 in 36 to 38 mins. i think they just bought money from the mi company and faking us.
Did anyone facing this slow charging issue thought check the ouput voltage and current ..but most of the detector available in market can calculate upto ...30v and 5.1A but ...mi 67w producing power is 11v and 6.1A ..so the value produce by the detector will not be accurate ...anyone have idea whether its software issue ..or company faking us and ...i charged my device from 1 to 100 without clearing ram and then always on display on ...
As one can read here the charging power isn’t as aggressive as the 120w of last year’s Mi 10 Ultra. But 67w of wired charging plus 67w of wireless charging is top-notch, especially wireless charging. In testing, wired charging charges the phone to 22% in 5 minutes, 90% in 30 minutes, and it takes only 36 minutes to fully charge to 100%. Wireless charging charged up the phone to 14% in 5 minutes, 78% in half an hour, and it took 43 minutes to fill up to 100%. For supporting such a powerful wireless charging phone, Xiaomi has also launched an 80w wireless charging dock.
https://www.gizmochina.com/wp-content/uploads/2021/04/Xiaomi-Mi-11-Ultra-Review-17.jpg
jwoegerbauer said:
As one can read here the charging power isn’t as aggressive as the 120w of last year’s Mi 10 Ultra. But 67w of wired charging plus 67w of wireless charging is top-notch, especially wireless charging. In testing, wired charging charges the phone to 22% in 5 minutes, 90% in 30 minutes, and it takes only 36 minutes to fully charge to 100%. Wireless charging charged up the phone to 14% in 5 minutes, 78% in half an hour, and it took 43 minutes to fill up to 100%. For supporting such a powerful wireless charging phone, Xiaomi has also launched an 80w wireless charging dock.
https://www.gizmochina.com/wp-content/uploads/2021/04/Xiaomi-Mi-11-Ultra-Review-17.jpg
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I'm from India ..Having Indian Variant mi 11 ultra and Indian Variant mi 67w Charger
for reaching 50 percent it takes 20 mins ... and full charge it take ...45 mins to 50 mins with always on screen ...wifi ,bluetooth,location ,mobile data enabled
i set my battery limit at 85%
current s22 ultra at 12% , using 25w it shows 41 minutes until full (85%), shows Super Fast Charging
at 12% using 45w charging, it shows 34 minutes until full (85%), showing Super Fast Charging 2.0
so 45w is like 7 minutes faster. spending every less minute count, 7 minutes less.
Do you happen to have the model number for your Samsung 45W Charger that you're using? Also, did it come with a 5A USB C to USB C cable?
netnerd said:
i set my battery limit at 85%
current s22 ultra at 12% , using 25w it shows 41 minutes until full (85%), shows Super Fast Charging
at 12% using 45w charging, it shows 34 minutes until full (85%), showing Super Fast Charging 2.0
so 45w is like 7 minutes faster. spending every less minute count, 7 minutes less.
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Click to collapse
This sounds about right. The way the tech inside the s22 ultra works is it lets you 45 watt charge the battery from 0 to 60%. After 60% it slows the charging down and it's not as fast to fill up. That's why you only get 7 to 10 minutes of faster charging with the 45 watt versus the 25 watt.
If you wanted to see much bigger charging speed numbers then Samsung would have to go to something much bigger like say a 60 watts. 25 watts to 45 watts is just not that much of a big difference. But 25 watts to 60 watts or 25 watts to 100 Watts definitely is.
someone should sue Samsung for false advertisement !
my phone is at 34%, i using those USB-C cable with LED watt display, it only showing 31W on my home aftermarket 65w charger, it showing the same 31W on my aftermarket car charger too. unless samsung OEM charger able to charge at full 45w, then it's false advertisement !
someone really need to sue them !
Sue for false advertisement? Haha right. Because it doesn't work with aftermarket chargers, which no company is ever going to say work with their phones anyhow. Until we get a proper test with power meters, a new Samsung charger, and 20V/3A cables we just don't know. We don't know what the YouTubers or anyone else is actually using at this point. The charge voltage to reach 45 Watts seems to have gone up to 20 volts, which might put some cables out of that sort of territory.