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slow charge

I read a post here and I didn't quite understand which charger should I buy for a quick charge.
Appreciate the help.

The one that came with the phone.
The phone will only take in what it needs.
This phone charges the fastest I have ever witnessed on AC obviously.

guy6136206 said:
I read a post here and I didn't quite understand which charger should I buy for a quick charge.
Appreciate the help.
Click to expand...
Click to collapse
only use the charger given with the box cause they have settled some voltage parameters according to phone's battery ...so dont go for any other charger ...it might heat up your battery or any wrong can be happen to u ....
bro it is 2300 mah battery so it takes time to fill up some juice into battery ...
dont worry
Sent from my Nexus 5 using Tapatalk

Any 2 amp charger will work. 1 amp chargers will work too but won't charge as quickly.
Sent from my Moto X

http://www.androidbatterylife.com/2013/12/easy-pick-correct-charger.html

rahil3108 said:
only use the charger given with the box cause they have settled some voltage parameters according to phone's battery ...so dont go for any other charger ...it might heat up your battery or any wrong can be happen to u ....
bro it is 2300 mah battery so it takes time to fill up some juice into battery ...
dont worry
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
All (good) USB chargers are going to charge at the same 5V as the Nexus 5 charger. Any charger from another phone will work without issue, but if it's under 1.2A it will charge more slowly (many are 1A). Just don't buy a cheap, poorly made charger and you'll be fine.
aavvaallooss said:
http://www.androidbatterylife.com/2013/12/easy-pick-correct-charger.html
Click to expand...
Click to collapse
The major assumption here that a slower charge leads to a higher run time is not true.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
A slower charge leads to the saturation charge phase taking less time while the constant current phase takes longer. The battery in the Nexus 5 and the accompanying 1.2A charger is meant to give you the quick 70% charge that is discussed in the BU article and then trickle charge during the saturation charge. If you're charging overnight it doesn't matter which method you use, you'll still reach 100% around the same time and the runtime will be the same.

Tnx everyone, I have the original chargr but I lost is cable.
I tried many cables but that just are not fast enoug.
Any idea where I can buy one?

Mi4i charger

Mi4i features fast charging. Can you suggest a better charger than 5v-2a charger?

Apple iPhone charger shows up as a fast charger for me.

fast charging is supported but the charger in the box is a normal one. (5v2a)
can anyone try out with the proper fastcharge2.0? (9v1.2a)

Donnt have one...would definitely love to get the feedback from someone who tested it first hand!

how do you see it 'shows up' as a fast charger?
are there any indication?

Mi4i FAQ http://en.miui.com/thread-122548-1-1.html
50. Does my Mi4i have Quick Charge feature? If yes, then which version does it support?
A: The Mi4i has Quick Charge 1.0, which explains the slow charging rate some users have been complaining about. The Mi4i takes roughly 2 hours 30 minutes to fully charge for me
Click to expand...
Click to collapse
And FYI, http://www.gsmarena.com/charge_test-review-1239p2.php
Quick Charge 1.0 was introduced in 2012 and it made use of a 5V/2A charger, which could charge a phone up to 40% faster than conventional 5V, 1A chargers. That boost accounts for a 10W max charging power.
Click to expand...
Click to collapse
Thus the original 2A charger that comes with phone is the fastest charger supported.

lj0000 said:
how do you see it 'shows up' as a fast charger?
are there any indication?
Click to expand...
Click to collapse
check out my post on miui forum ( Xda prevent newbie like me to post URL
search google: [Tools, Tips & Tutorials] Tweaks For Mi 4i . Fast Charge, No Lagging, Fix issues. For Any ROM
in section Tweak charging .
when phone idle & charging and get 1100-1300mA current
Click to expand...
Click to collapse

Yeah
Any charger compatible with Qualcomm Fast Charge 2.0 is good for Mi4i . Go for it..........Do verify this before buying

Hi
I have a charger from a broken Umi Zero is a 5v 2,4A, can I use it for charging the mi4i ?
thanks

Hi,
I'm not sure, if Mi4i really support QC 2.0 but the chipset does.
Read this articles:
Mi4i FAQ
50. Does my Mi4i have Quick Charge feature? If yes, then which version does it support?
A: The Mi4i has Quick Charge 1.0, which explains the slow charging rate some users have been complaining about. The Mi4i takes roughly 2 hours 30 minutes to fully charge for me
Click to expand...
Click to collapse
[Tips & Tutorials] Quickcharge 2.0 Explained. Yes! the one featured on Mi4i!
It clearly states the Snapdragon 610 has QC 2.0 support. And the battery pack can charge at 5V 2A.
Click to expand...
Click to collapse
Xiaomi Mi 4c Charging Analysis Part-2
I just bought Tronsmart TS-WC1Q and I must confirm almost the same results as with original Xiaomi charger for Mi4i. Charging current with Tronsmart charger is about 1,44A and voltage is stable about 5,2V. I'm not sure, if I can determine from these results, if its support QC 1.0 or 2.0. Next time I will try to measure the time from 0->40% of battery and compare original and Tronsmart charger. Anyway I think it matters also on the ROM/kernel you are currently using. I'm on RESURRECTION REMIX with Sensei kernel v1.3.2-dev kernel.

I m on cm13, it looks like qc2.0 is supported. I used a China charger (9v1.2a). It charged fully charged up from 0 to 100% in 1hr and 40 min.

i have tried
i have tried qualcomm's fast charging 2 it works well.

How fast is Mi 4i supposed to be? I've bought orico quick charger 2.0 and it does about 1.5 hr to be fully charged. Do I need to install something to make it faster?

Fast Charging?!?

Hello.
Can someone explain me how on earth does fart charging works on this device?
I've tried the included cable and charger, third party chargers and i don't see any fast charging going on?!? or any indication on screen that it's happening.
I've read somewhere that you need a special cable to use with the included charger (?!?!) is this true? where do you get this cable?
Phone is amazing but the charging part is really is really weird if you ask me.
Thanks.
J.

Joao Oliveira said:
Hello.
Can someone explain me how on earth does fart charging works on this device?
I've tried the included cable and charger, third party chargers and i don't see any fast charging going on?!? or any indication on screen that it's happening.
I've read somewhere that you need a special cable to use with the included charger (?!?!) is this true? where do you get this cable?
Phone is amazing but the charging part is really is really weird if you ask me.
Thanks.
J.
Click to expand...
Click to collapse
it sharges in an hour and half with me
it is quite fast

rowihel2012 said:
it sharges in an hour and half with me
it is quite fast
Click to expand...
Click to collapse
do you get any message saying fast charging?

it doesnt show any fast charging message, so i wouldnt rely on such a message to make sure its working. just use the included cable and charger and ull be fine it takes about 2.5 hours to charge from 0-100% via fastcharge
Sent from my Huawei Mate 8 NXT-AL10 using Tapatalk

Joao Oliveira said:
do you get any message saying fast charging?
Click to expand...
Click to collapse
no

rowihel2012 said:
no
Click to expand...
Click to collapse
Yeah ...That's why I asked. I plugged a meter to the charger and never saw it go more than 5v 2a.
I think it needs a special cable for the 9v but I can't find any info.
2.5h is not fast charge. My old s6 edge plus used to take around 70-80 m from 5-100% if if you put the remaining 1000mah shouldn't take that long lol

Mean in 30 min 40% recharge . My phone 0 -100% charged in 2:00

trust me, it is fast charge
calculate for yourself: original huawei charger is rated at 9V 2A, thats 18W total. 2A is 2000 mA. mate 8 battery is 4000 mAh.
best case scenario: 4000 mAh / 2000 mA = 2h
now add to that the extra time it needs to charge from 85-100%, because at 85% it automatically slows down charging to prolong the health of the battery and youre at the 2.5h FAST CHARGING time
also, i dont believe for a SECOND that the S6 edge+ charged that fast in your case. check this review: http://www.trustedreviews.com/samsung-galaxy-s6-edge-plus-review-battery-life-and-verdict-page-6
"Fast charging comes as standard with the S6 Edge+ and it works. It charged from 0 to 100% in just 1 hour 45 minutes. Samsung claims wireless charging has also been improved – it’s 27% faster on the Edge+ compared to the normal S6 and S6 Edge."
so thats 105 minutes for 3000 mAh. add to that 33.3% to get to 4000 mAh and u get a total charging time of..... 140 minutes. which is 2 hours and 20 minutes

jbmc83 said:
trust me, it is fast charge
calculate for yourself: original huawei charger is rated at 9V 2A, thats 18W total. 2A is 2000 mA. mate 8 battery is 4000 mAh.
best case scenario: 4000 mAh / 2000 mA = 2h
now add to that the extra time it needs to charge from 85-100%, because at 85% it automatically slows down charging to prolong the health of the battery and youre at the 2.5h FAST CHARGING time
also, i dont believe for a SECOND that the S6 edge+ charged that fast in your case. check this review: http://www.trustedreviews.com/samsung-galaxy-s6-edge-plus-review-battery-life-and-verdict-page-6
"Fast charging comes as standard with the S6 Edge+ and it works. It charged from 0 to 100% in just 1 hour 45 minutes. Samsung claims wireless charging has also been improved – it’s 27% faster on the Edge+ compared to the normal S6 and S6 Edge."
so thats 105 minutes for 3000 mAh. add to that 33.3% to get to 4000 mAh and u get a total charging time of..... 140 minutes. which is 2 hours and 20 minutes
Click to expand...
Click to collapse
I will make a full test from 0 to 100. I only charged from 40 to 100 and it took way more than 2 hours... that's why i asked if any special cable was needed. And as i told i mesured the charging rate coming out of the charger and never passed the 5V.
As for non Believing. It's REALLY pisses me off when people write that crap. Why would I lie? what would i gain from it? I sold the phone because i wasn't happy with it.... On the contrary and in case you don't know most sites like the ones you post are PAID to give positive reviews.

I checked with including charger and cable and the app Ampére and it charged with 2800mah. So, in ideaal situation it means a charging time of a proximity 1h and 26min. That means "fast charging". At least in my opinion. ?

Joao Oliveira said:
I will make a full test from 0 to 100. I only charged from 40 to 100 and it took way more than 2 hours... that's why i asked if any special cable was needed. And as i told i mesured the charging rate coming out of the charger and never passed the 5V.
As for non Believing. It's REALLY pisses me off when people write that crap. Why would I lie? what would i gain from it? I sold the phone because i wasn't happy with it.... On the contrary and in case you don't know most sites like the ones you post are PAID to give positive reviews.
Click to expand...
Click to collapse
that doesnt make sense what ure saying because in this case the site actually stated a HIGHER amount of minutes that it would take the s6 edge plus to fully charge from 0-100% so what now, theyre getting paid to write negative reviews as well?
also, no, ure not "gaining" anything from that, but people tend to exaggerate a lot, do a quick "drive by" in a thread and post random statements based on non-correctly remembered experiences and this is exactly how false statements are converted into "truths / facts". read my post and tell me where exactly i listed anything wrong. check various reviews on the mate 8, they all stare the same thing: about 2.5h for a full charge, give or take 10-20 min. it also compares perfectly with the charging time of the s6 edge+ in terms of mAh/min, and in fact these two phones are indeed VERY close, mate 8 being at 49mAh/min and the s6 series at around 50-52, so just marginally faster... which, again, is also represented by the numbers i listed in my post before
and again: there is NO extra message or notification stating ure in fast charge mode on the mate 8, it just does its job, thats it!
if ure getting slower charging rates / voltages, make sure to use the original charger and original cable and both with a proper high voltage power outlet.
Sent from my Huawei Mate 8 NXT-AL10 using Tapatalk

I noticed the fast charging only really kicks in if you leave your phone alone. But if you keep using it while it's charging, it just charges at regular speed. But the moment I put the phone down and screen of for 5 minutes, it quick charges like crazy

nighthawk626 said:
I noticed the fast charging only really kicks in if you leave your phone alone. But if you keep using it while it's charging, it just charges at regular speed. But the moment I put the phone down and screen of for 5 minutes, it quick charges like crazy
Click to expand...
Click to collapse
Yes im checked It is true
Sent from my HUAWEI NXT-L29 using Tapatalk

lucky then that i always leave my phone alone when its charging
Sent from my Huawei Mate 8 NXT-AL10 using Tapatalk

nighthawk626 said:
I noticed the fast charging only really kicks in if you leave your phone alone. But if you keep using it while it's charging, it just charges at regular speed. But the moment I put the phone down and screen of for 5 minutes, it quick charges like crazy
Click to expand...
Click to collapse
I hadn't tested this. After i turn off my phone, a few minutes later it jumps to 9V 2A on my meter. If you turn it back on it goes down to 5V 1A. Must be a phone security thing, which is kinda cool in a way if you ask me.
Btw Apparently quick charge works with non original chargers too. I have a Cheotech 60W 6 port usb with 2 Quick charge ports (which supports 9V 2A/ 12V 1.5A) and it works Using the original cable though.

Don't use fast charging unless you really need it.
Always fast charging overnite (when you're not actually using the phone for many hours) can only shorten your battery longevity more quickly then with normal charging.

Joao Oliveira said:
I hadn't tested this. After i turn off my phone, a few minutes later it jumps to 9V 2A on my meter. If you turn it back on it goes down to 5V 1A. Must be a phone security thing, which is kinda cool in a way if you ask me.
Btw Apparently quick charge works with non original chargers too. I have a Cheotech 60W 6 port usb with 2 Quick charge ports (which supports 9V 2A/ 12V 1.5A) and it works Using the original cable though.
Click to expand...
Click to collapse
is there option somewhere to turn it off? plz
themissionimpossible said:
Don't use fast charging unless you really need it.
Always fast charging overnite (when you're not actually using the phone for many hours) can only shorten your battery longevity more quickly then with normal charging.
Click to expand...
Click to collapse
Sent from my HUAWEI NXT-AL10 using Tapatalk

stesteste said:
is there option somewhere to turn it off?
Click to expand...
Click to collapse
When I'm going to recharge for many hours overnite I use a 1A travel charger.

i guess thats the best way to restrict charging amperage although it shouldnt hurt the battery so much, considering that the amperage drops off sharply once level reaches 85% and above...
Sent from my Huawei Mate 8 NXT-AL10 using Tapatalk

Charging a phone with a lower rated current, will cause the charger to "try and match" the current requested.
Amps work in that manner, the device determines the draw. For example, using a 5v 5a (theoretical device) on a 5v 1a device will likely melt your adapter / screw up your phone from improper voltages.
In that case, an adapter may heat up, or if its smart enough (unlikely), it will turn off periodically. Most of the time, it will have an unstable voltage (undervolting) which is how some phones are able to detect an improper charger is used. This is bad for your battery.
I do not recommend charging with a charger that isn't rated for it. This is widely documented.

Huawei Mate 8 Quick Charge.

Hi.
I have a question about Mate quick charge:
I found that Mate 8 has quick charge future. This future is in the phone or in the charger?
How can I switch between quick charge and normal charge?(there is a label on the charger "Quick charge", So for normal charge I should buy a new charger?)
Will quick charge harm the battery(In long usage and compare to normal charge)?

aqazwsx123 said:
Hi.
I have a question about Mate quick charge:
I found that Mate 8 has quick charge future. This future is in the phone or in the charger?
How can I switch between quick charge and normal charge?(there is a label on the charger "Quick charge", So for normal charge I should buy a new charger?)
Will quick charge harm the battery(In long usage and compare to normal charge)?
Click to expand...
Click to collapse
you can use a certified quick charger or normal charger. Its just the normal charger will take longer..
They have made the quick charge work in a way that it charges fast until it reaches 80%, and then gradually decreases to 'normal' up to 100% full, so in the long run it should have no harm to the battery.

dj69holland said:
you can use a certified quick charger or normal charger. Its just the normal charger will take longer..
They have made the quick charge work in a way that it charges fast until it reaches 80%, and then gradually decreases to 'normal' up to 100% full, so in the long run it should have no harm to the battery.
Click to expand...
Click to collapse
Where can I chose between normal and quick?
I can't find any option in the phone.

aqazwsx123 said:
Where can I chose between normal and quick?
I can't find any option in the phone.
Click to expand...
Click to collapse
there is no option. you can either use a QuickCharger or a normal charger..
But as i said with a quickcharger it Automatically changes the amperage as it gets more full, so as to protect the battery.

dj69holland said:
there is no option. you can either use a QuickCharger or a normal charger..
But as i said with a quickcharger it Automatically changes the amperage as it gets more full, so as to protect the battery.
Click to expand...
Click to collapse
Aha.
Thanks alot.
So there is no problem if I user other phones charger?

aqazwsx123 said:
So there is no problem if I user other phones charger?
Click to expand...
Click to collapse
Not recommended.

ronnie72 said:
Not recommended.
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Click to collapse
That's nonsense.
Any charger will do. Not every charger will charge the phone as fast as the original one though.
Using an Anker 5-ports charger here, without any issues, obviously.

Really!? Two damaged battery of HTC devices after use Samsung chargers about a mont. Personal experience!!!

Pfeffernuss said:
That's nonsense.
Any charger will do. Not every charger will charge the phone as fast as the original one though.
Using an Anker 5-ports charger here, without any issues, obviously.
Click to expand...
Click to collapse
+1
Sent from my HUAWEI NXT-L29 using Tapatalk

Pfeffernuss said:
Any charger will do. Not every charger will charge the phone as fast as the original one though.
Using an Anker 5-ports charger here, without any issues, obviously.
Click to expand...
Click to collapse
OK, i don't want to argue with you. Just share opinion. And for some reason the manufacturer pay attention to use genuine chargers (attached pictures).
More useful info. http://thetechieguy.com/not-all-cell-phone-chargers-are-the-same-and-are-not-interchangeable/

ronnie72 said:
OK, i don't want to argue with you. Just share opinion. And for some reason the manufacturer pay attention to use genuine chargers (attached pictures).
More useful info. http://thetechieguy.com/not-all-cell-phone-chargers-are-the-same-and-are-not-interchangeable/
Click to expand...
Click to collapse
those warnings are for non technical minds.. because they done pay attention to technicalities.
Any charger will work, but you do need to take note of the output Voltage mainly...
Amperage will just mean how fast or slow it will charge..
- If i were to use a 9v 2A charger on a 5v 2A phone, i think it may cause harm.
- a 5v 1A charger on a phone 5V 2A, will just mean it will charge half as fast...
- just like when you plug your phone to computer USB port, it charges at 5V 500mAh (0.5A), hence why it charges slowly

Useful info for everyone.

dj69holland said:
those warnings are for non technical minds.. because they done pay attention to technicalities.
Any charger will work, but you do need to take note of the output Voltage mainly...
Amperage will just mean how fast or slow it will charge..
- If i were to use a 9v 2A charger on a 5v 2A phone, i think it may cause harm.
- a 5v 1A charger on a phone 5V 2A, will just mean it will charge half as fast...
- just like when you plug your phone to computer USB port, it charges at 5V 500mAh (0.5A), hence why it charges slowly
Click to expand...
Click to collapse
:good::good::good:

Fast Charging Using Nexus 5X Charger

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.
Click to expand...
Click to collapse
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.
Click to expand...
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
Click to expand...
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
Click to expand...
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%?
Click to expand...
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.