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[Q] Does "Quick Charger UCH10" support Z3 ?

Sony announced Quick Charger UCH10 for Z3+ that's works with Qualcomm quick charge 2.0 as you know
Did any one try it on Xperia Z3 ?? and what are the results ??
http://www.sonymobile.com/global-en/products/accessories/quick-charger-uch10/
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If it's QC2.0 compliant it should work, since other QC2.0 chargers work.

There's been a number of posts about quick charge only being enabled on Japan Z3 & Z3c variants. QC 2.0 is supposed to charge to 60% in 30 min, but I've seen VERY few people get anything more than 1% per min.

PuffDaddy_d said:
There's been a number of posts about quick charge only being enabled on Japan Z3 & Z3c variants. QC 2.0 is supposed to charge to 60% in 30 min, but I've seen VERY few people get anything more than 1% per min.
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Click to collapse
It's enabled, but Sony does not use it as aggressively as some devices with removable batteries. You won't see much improvement with the screen off and a GOOD 2.0A charger with a very short USB cable, but you'll see some. You'll see major improvements when running Google Maps Navigation in a car - many charger/cable combos can't even keep the battery steady, while a QC2.0 car charger will charge the device at a reasonable rate even through a long/thin (normally VERY poor for charging) USB cable.
Sony's charge rate cap is 1500 mA (0.5C) into the battery. With screen off and a high-quality charger, you'll hit this cap inconsistently (frequent drops to around 1.2A from the cap of 1.5). With a QC2 charger, you'll hit that cap consistently even with the screen on and a crappy USB cable.

Entropy512 said:
It's enabled, but Sony does not use it as aggressively as some devices with removable batteries. You won't see much improvement with the screen off and a GOOD 2.0A charger with a very short USB cable, but you'll see some. You'll see major improvements when running Google Maps Navigation in a car - many charger/cable combos can't even keep the battery steady, while a QC2.0 car charger will charge the device at a reasonable rate even through a long/thin (normally VERY poor for charging) USB cable.
Sony's charge rate cap is 1500 mA (0.5C) into the battery. With screen off and a high-quality charger, you'll hit this cap inconsistently (frequent drops to around 1.2A from the cap of 1.5). With a QC2 charger, you'll hit that cap consistently even with the screen on and a crappy USB cable.
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Thanks for the info! But isn't 1.5A charging capacity closer to the old QC 1.0 standard that came out a couple years ago? In order to qualify as QC 2.0, shouldn't the charge rate be higher? Is this why Sony does not advertise quick charging on either of these phones?

PuffDaddy_d said:
Thanks for the info! But isn't 1.5A charging capacity closer to the old QC 1.0 standard that came out a couple years ago? In order to qualify as QC 2.0, shouldn't the charge rate be higher? Is this why Sony does not advertise quick charging on either of these phones?
Click to expand...
Click to collapse
1.5A into the battery, but don't forget that you need to power the device also.
Let's assume a battery with a voltage of 4.0 volts. Typical system power consumption when idle with the screen off and external power disconnected is 700-900 mA = about 3-3.5 watts. That's when sitting at the launcher doing nothing.
So now that we know the system power budget when screen on and idle, let's calculate how much power is needed to charge the device at full rate:
1.5A*4.0 volts = 6 watts. This goes up to around 6.5 watts at 4.35 volts
So the total power to run the system AND charge at 1.5A is 6 + 3.5 = 9.5 watts and this is with the system sitting at the launcher totally idle.
Also, typical switching regulators are only 80-90% efficient. Let's assume 90% here.
So we need 9.5/0.9 = 10.5 watts input
A 2.1A 5v power supply can only deliver 11 watts into the cable. Cables aren't ideal and have resistance, so you're going to lose power in the cable at 2.1A.
Try to do anything with the device and there is no longer system power budget to keep the battery charging at 1.5A. Also, see the above about cable losses? Every charger chipset I've seen backs off when vbus drops below 5.0-5.1 volts or so. The 2012 Nexus 7 dropped 200 mA for every 0.1 volt drop below 5.1 volts for example.
QC2.0 ups vbus to either 9 volts or 12 volts (9v in nearly all configurations I've seen, SHIELD Tablet is one exception). 9 volts at 2A = 18 watt power budget instead of 11. Also, for a given power delivery amount, there's less cable losses at 9 volts than at 5, and the system can tolerate much more input voltage drop.
Try running Google Maps Navigation with this USB cable - http://www.amazon.com/StarTech-com-Micro-USB-Cable-UUSBHAUB3RA/dp/B001AR4NC8/ - If you use any standard 5v charger, your battery will discharge because there just isn't enough power to even keep the screen/CPU/GPS fed. Use a QC2.0 charger and you'll see the battery actually charge at an acceptable rate.

Battery charging rate

Hey everyone I'm trying to gauge if my note pro is faulty or if this is just normal for them. It seems to take a really long time to charge and I've even had the battery percentage go down While plugged in and doing some light browsing. Here's a screenshot of the battery info while charging and it seems like that's a really long for it to charge. I appreciate any insight thanks.
Sent from my SM-P900 using XDA Free mobile app

If you are using less than 2 amp charger it will not keep up with tablet on. Tablet off charging time doubles if 1 amp charger. I use a standard micro USB cable usually, the usb 3 cable charges faster when using 2 amp charger I believe.
Sent from my SAMSUNG-SM-P907A using XDA Free mobile app

Not sure why the screenshoot I took didn't show but let me try again.
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I've had the tablet discharge even when using the 2A charger, but it was microusb not usb3. If I'm using the 2A brick does the microusb vs usb3 cable make a difference?
The screenshoot was taken while plugged into a microusb cable into a 1A brick. I get that the 1A will be slower, but 2 hours to go 15% seems crazy and the tablet was merely powered on and connected to wifi, not in use.

Rockman195 said:
Hey everyone I'm trying to gauge if my note pro is faulty or if this is just normal for them. It seems to take a really long time to charge and I've even had the battery percentage go down While plugged in and doing some light browsing. Here's a screenshot of the battery info while charging and it seems like that's a really long for it to charge. I appreciate any insight thanks.
Sent from my SM-P900 using XDA Free mobile app
Click to expand...
Click to collapse
Common problem of Galaxy Note and Tab Pro: cracked battery connector. Resolder battery connector will fix : quick discharge, long charge time, not fully charged, battery capacity fluctuation....etc...
This black battery connector was re soldered already to fix this problem:
As seen in above picture, battery cables are not fully contact with pins of male battery connector also are the source of problem.
The fix is simple: pushing the opening closer, you need a magnified glass and thin knife to do this:
After the fix, this is a good connection between male and female battery connector:

It takes Exynos (which a P900 is) Note 12's over 8 hours to fully charge. I had a Exynos 10.1-14 and it took seven hours. It's one of the reasons I got a Snapdragon Note 12 because it cuts charging time dramatically.

A few things to consider:
Never, absolutely never use a 1A charger with a device this powerful. It will drain more than it charges.
1A chargers are not powerful enough for modern quadcore devices. Even the Note 3 (which has the same hardware) requires 2 hours to charge 30% when using a 1A charger. (It has a significantly smaller battery than the NotePro)
USB2/MicroUSB charges at a rate of 500mA.
USB3 charges at a rate of 900mA.
(The small side of the USB3 plug is what makes it USB3, the other side is just a regular MicroUSB 2.0)
This also applies to the amount of power the cable itself will transfer. A such, using a USB2.0 cable will severely limit charging speed.
Another thing of importance is the device itself. The P905 has Qualcomm Fastcharge. The P900 does not. That amounts to several hours of difference in charging rate.

ShadowLea said:
A few things to consider:
Never, absolutely never use a 1A charger with a device this powerful. It will drain more than it charges.
1A chargers are not powerful enough for modern quadcore devices. Even the Note 3 (which has the same hardware) requires 2 hours to charge 30% when using a 1A charger. (It has a significantly smaller battery than the NotePro)
USB2/MicroUSB charges at a rate of 500mA.
USB3 charges at a rate of 900mA.
(The small side of the USB3 plug is what makes it USB3, the other side is just a regular MicroUSB 2.0)
This also applies to the amount of power the cable itself will transfer. A such, using a USB2.0 cable will severely limit charging speed.
Another thing of importance is the device itself. The P905 has Qualcomm Fastcharge. The P900 does not. That amounts to several hours of difference in charging rate.
Click to expand...
Click to collapse
Interesting and good to know. Would a Micro USB to usb3 adapter do anything on a cable or no? Ordered some 2a power bricks since I only had one previously
Sent from my SAMSUNG-SM-G920A using XDA Free mobile app

ShadowLea said:
Using a USB2.0 cable will severely limit charging speed.
Click to expand...
Click to collapse
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
There’s been a lot of talk about the presence of USB 3.0, even though the micro B connector type has been around for considerable time already and in a ton of devices. The Note 3 just has the misfortune of apparently being many people’s first exposure to the connector, whose awkward double lobed shape gives it forwards compatibility with microUSB 2.0. The rightmost region is just the familiar microUSB 2.0 connector, the left contains the pins for SuperSpeed signaling for 3.0. Plug something into the right 2.0 jack and you get 2.0 speed for transfers and charging. 3.0 at present should give you faster transfer rate, and eventually faster charging, but the Note 3 continues to use Samsung’s 2.0 amp charging spec and rate, but more on that later.
Charging is an interesting story on the Note 3, but primarily because of what doesn’t change. The Note 3 continues to use Samsung’s tablet charging specification and charger, which has 2 amps of maximum output. The Note 3 draws 2 amps over a considerable amount of the charging curve, like other Samsung devices (in the linear part of the charge curve). USB 3.0 doesn’t change things up here quite yet with the new supported charge voltages that are coming eventually with the power delivery specification.
The move to USB 3.0 is interesting and could be a big benefit when it comes to getting large files off of the device (the NAND/eMMC isn't quick enough to make USB 3 any faster at putting data on the phone).
http://www.anandtech.com/show/7376/samsung-galaxy-note-3-review
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Click to collapse

BarryH_GEG said:
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
[/i]
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Agree . . I may not have an inline amp meter to verify for sure but based on my own charge rate observations using GSam Battery Monitor Pro I see no noticeable difference between a 2.0 vs stock 3.0 cable using the stock charger.
Those charge ratings quoted by Shadowlea I believe are for the USB specs themselves which may or may not be adhered to when the device is plugged into a computer but don't necessarily translate to using 2.0 vs 3.0 cables on 2 amp chargers.

muzzy996 said:
Those charge ratings quoted by Shadowlea I believe are for the USB specs themselves which may or may not be adhered to when the device is plugged into a computer but don't necessarily translate to using 2.0 vs 3.0 cables on 2 amp chargers.
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Click to collapse
If we have Quick Charge, and I'm not sure we do, it's 1.0. The Note 4 was the first to support adaptive fast charging which Qualcomm introduced in QC 2.0.
From Qualcomm...
In laboratory tests using a 3300mAh battery, a Quick Charge 2.0 enabled device went from 0% to 60% charge in 30 minutes, while a device without Quick Charge 2.0 using a conventional (5 volt, 1 amp) charger achieved just a 12% gain in the same 30 minutes. A device with Quick Charge 1.0 managed a 30% charge in that time period.
Click to expand...
Click to collapse

BarryH_GEG said:
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
[/i]
Click to expand...
Click to collapse
When using the same charger: (Namely the original NotePro charger)
(Ignore the average rate, that's useless given the fact that I just installed the app).
With Original Samsung TabPro USB 2.0 MicroUSB cable:
With Original Samsung NotePro USB 3.0 Cable:
Both cables are the same age, both are official and neither is damaged. Fun fact, the NotePro cable is 1 meter longer, but still charges faster.
I get the exact same results on my Note 3 and my S5.
The NotePro can't be charged through a computer's USB port, by the way. Not without turning the device off completely and waiting three days.

You can't charge any faster than the 2A spec Samsung's provided no matter what charger and cable you use. Some non-Samsung cables and chargers may degrade charging but peak is peak. There are two sites I don't question and they're Anandtech and GSMArena. I accept what I quoted as truth. That and I personally see no charging difference using my stock 3.0 Cable and charger and my Note 5's fast charger and cable used in multiple combinations.
BTW, we do have Quick Charge 1.0; it started being included in Snapdragon S3's. It's 30% faster than a 1A charger but Samsung's always supported 2A so I don't know what the actual benefit is to us. 15%?

Xiaomi Mi 4c Charging Analysis Part 1

Find this interesting charging analysis from here, and thought i should share!
"
We just report Xiaomi Mi 4c information today earlier. Now, Let’s check the charging performance on Xiaomi Mi 4C.
Because our test sample is still on the way, should get tomorrow, the following test result are coming from our friend @chongdiantou, All credit to him
Here is the usb type c port in Mi 4c, and you need to connect your charger via type c cable to charge it.
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Here is the type c cable which included in the package, the length is about 1.2m.
Xiaomi also include a USB TYPE C Adapter in case you forget to take your type c cable, and you can connect this adapter with your Mi 4c, and use the regular usb cable to charge your Mi 4c. But it is really NOT convenience for people to charger via the adapter.
Here is the photo for the stock charger in xiaomi mi 4c:
This stock charger model is MDY-03-EB, input is 100-240v, output support 5V/2A, 9V/1.2A and 12V/1A, total 12w. It’s follow the qualcomm quick charge 2.0 standard, however, the total watt is lower than ours’ 18W quick charger. and this is the same charger as you seen on Mi3 and Mi4 and Mi note.
The sample we test still use preload MIUI 6, and the battery level is 60% when we do the following test.
First we test with the original Mi 4c charger, with screen on, we get this;
With screen off, we get this:
With screen on,you get 9V/1.12A, and with screen off, it change to 8.98v/0.99a, it’s a little surprised, in our charging analysis for Oneplus two, we found if you turn off the screen, the charging current will get bigger, while in xiaomi mi4c, it get smaller.
Update: We just found this charging time test from another site:
They use the original xiaomi stock qc2.0 charger, and It need about 2 hours 10 mins to charge from 8% to 100%.
Then, we use the xiaomi ZMI QC2.0 charger to test:
The ZMI qc2.0 charger have the same output as ours, 5V/2A, 9V/2A, 12V/1.5A, total 18W. However, the mi 4c also just accept 8.96V/1.16A.
So we can confirm xiaomi mi 4c make some current limits.Now we can’t know the limits are in kernels or the hardware.
Since no matter which quick charge 2.0 chargers you are using, the output just almost 10w, how about to try the regular 5V/2A charger? Then, next, we decide to test with Oneplus two charger:
Oneplus two offer a 5V/2A regular charger, In our charging analysis, it can give 5V/1.98A to OPT. so what’s about in the xiaomi mi 4c?
Even the charger can offer 5V/2A without problem, but xiaomi 4c just accept 1amp current. So If your charger don’t support qc2.0 quick charge, it can just give 5W output to xiaomi mi 4c. This is really annoying. we don’t understand why xiaomi limit current in 5V/2A regular power adapter.
Here is the first part of Xiaomi MI 4c charging analysis, we will test the total charging time from 0%-100% and compare with our tronsmart qc2.0 chargers. and will try to find the reasons why xiaomi limit the current.
But now, from the analysis, If you want quick charge your Mi 4c., you have to get qc2.0 chargers.
Xiaomi have one wall charger included in the package, If you want a backup qc2.0 wall charger, you can check our WC1Q model:
http://www.tronsmart.com/products/ts-wc1q-rapid-wall-charger
We also have multi-port QC2.0 chargers, check here:
http://www.tronsmart.com/products/-ts-wc3pc-quick-charger-2.0-rapid-wall-charger
http://www.tronsmart.com/products/ts-uc5pc-quick-charge-2.0-rapid-desktop
and if you want to charge your Mi 4c in your car with quick charge, we also have qc2.0 car charger solution:
http://www.tronsmart.com/products/usb-car-chargers
Among all of our accessories, We would love to give you a BIG RECOMMEND for our CCFC car charger, which is the world’s unique Type C + Quick Charge 2.0 support car charger
CCFC is the world first usb type c car charger, also support quick charge 2.0 technology.
We offer the most convenience charging experience for your Mi 4c, just Plug & Charge.
You don’t need to prepare another type c cable or type c adapter, just use our CCFC type c car charger, you get anything.
Beside that, We offer another usb port for your family, which also support quick charge 2.0, never need to worry lose battery in your driving!
Stay tuned for our 2nd part charging analysis for Xiaomi Mi 4c. keep watching our Charging Analysis Channel!
Any questions, feel free to leave comment below.
Tronsmart
"
Source: http://www.tronsmart.com/xiaomi-mi-4c-charging-analysis-part-1

Hi, I have Mi4C... and I have a "problem", I tried Anker and Aukey wall charger using quickcharge 2.0 technology.. But I had some issue.
I used till now the original battery charger with its usb cable. I usually charge the phone turning it off... When it gets to 100% I unplug the phone and then turn on .. that's normal ok... But I noticed that using another compatible charger that uses Qualcoom 2.0 quick charge technology.. once the phone gets 100% and I unplugg the charger my phone boots by itself.. Why does it happen with this charger and not with the original one???

As I don't have any measurement tools, I can only state things based on my observation, but I see no noticeable difference between charging time using xiaomi's charger and a noname 5V/2A charger - ie. in both cases an idle phone (system on, wifi on, standard processes running in background) gets fully charged in about 2:15 to 2:30. Currently I'm on holidays with a standard 5v/2a charger, using some cheapo usb A to micro-usb, a noname microUSB-usbC converter and charging time remains the same every time I charge. Most probably the results may vary with different cables - maybe in some cases the charging power is purposely reduced by phone electronics in order not to fry the charger if it's get recognized as regular one.
I also use a car charger that's capable of 5A/1A and charging there lasts ages; never drove sooo long to get the phone fully charged
I tried a Lumia usb charger 5A/750mA and then it takes about 5 hours to get mi4c fully charged
regular users - try Ampere app, it works well, at least with CM12.1. the one shows charging at about 1400-1500mA with the above mentioned setup,post your results with different cables / chargers

for me guys xiaomi mi4c didin't have quick charge.
I have note 4 and he have battery 3220mAh (thats mean bigger should take longer to charge) and even when i use him (have bigger screen loosing more energy) and i charge from around 20% i see my procentage of battery is growing. With xiaomi almost nothing....
But ok lets speak about quick charge.
Qualcomm® Quick ChargeTM 2.0 Tech
Developed by Qualcomm, the proprietary technology solution is built into devices powered by Qualcomm® SnapdragonTM processors, including the 200, 400, 600 and latest 800 series (including 810). With a compatible phone, laboratory tests show that Quick ChargeTM can charge a typical 3300mAh mobile battery from empty to 60%-75% in as little as 30 minutes.
Click to expand...
Click to collapse
then sorry guys but in 30 min u have nothing in xiaomi.
i like this phone but about charging is not like should be

I can vouch the included charger is crap. It vibrates on trickle charge and it doesn't charge much faster than a regular 2A charger.

Karly Johnston said:
I can vouch the included charger is crap. It vibrates on trickle charge and it doesn't charge much faster than a regular 2A charger.
Click to expand...
Click to collapse
To be honest i use charger from note 4 in work. my xiaomi in one hour charge around 10% but when i was using note 4 with the same charger in one hour was like 30%...

mexikanos11 said:
To be honest i use charger from note 4 in work. my xiaomi in one hour charge around 10% but when i was using note 4 with the same charger in one hour was like 30%...
Click to expand...
Click to collapse
I don't know what's faulty on yours. Mine can reach 60% in 1 hour with the supplied charger and cable.

leledumbo said:
I don't know what's faulty on yours. Mine can reach 60% in 1 hour with the supplied charger and cable.
Click to expand...
Click to collapse
Sorry but meybe u didint see but quick charge 2.0 means
30min =60-75%
your is
60min = 60%
THATS MEANS FOR U IS QUICK BUT FOR REAL HOW SHOULD BE IS TWICE SLOWER
Im not telling like charging is crap just i have note 4 6 months and charging is much quicker... thats all....
And start to play some games on xiaomi when u have 20% and than tell me how quick u will charge your phone.... Meybe for u is quick because u never had before real quick charge 2.0. I had samsung galaxy s5 and was normal but after when i bought note 4 and i was plaing on phone and the same time charging my battery was really fast charge to 60-70%

mexikanos11 said:
Sorry but meybe u didint see but quick charge 2.0 means
30min =60-75%
your is
60min = 60%
THATS MEANS FOR U IS QUICK BUT FOR REAL HOW SHOULD BE IS TWICE SLOWER
Im not telling like charging is crap just i have note 4 6 months and charging is much quicker... thats all....
Click to expand...
Click to collapse
You're drunk, even Qualcomm never admits that. Here's official Qualcomm video:
https://www.youtube.com/watch?v=Ut6lemu_N64
It uses Nexus 6 which has 3220 mAh battery. The snapshot takes:
20 min -> 26%
30 min -> 38%
40 min -> 50%
Compared to my 60 min -> 60 %, the progression looks comparable. Now state a prove for your claim.
mexikanos11 said:
And start to play some games on xiaomi when u have 20% and than tell me how quick u will charge your phone.... Meybe for u is quick because u never had before real quick charge 2.0. I had samsung galaxy s5 and was normal but after when i bought note 4 and i was plaing on phone and the same time charging my battery was really fast charge to 60-70%
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Click to collapse
I wouldn't do that. Why charging while playing on low battery? That could definitely kill your device if the wrong thermal config is used because the device will get really hot compared to if you do it on >50% battery. It seems like you're the one who doesn't understand how to charge correctly.

Ok u have official information but me to....
https://www.qualcomm.com/products/snapdragon/quick-charge
Then u see they write every single page different things...
And about thermal things i go to work 2 hours in work i use phone as vell then sorry but i have only time on breake to charge him and than i have 1hour time for me then if i like i play.... I canot think like i will broke phone. Phone is to help me in life not to watch because i can break.... IF i break i will buy new... Anyway i change them minimum once per year... Im not telling like not 4 is perfect because to be honest xiaomi is much quicker... Only camera and that charging was better...

For whatever reason Xiaomi limits the charging on this device. Quick charge 2.0 according to the official qualcomm specs is 0-60% charge in 1hr. I can only get 0-40% charge in an hour. Without the kernel sources, there is nothing that can be done to modify the charging rates. Anyway, using the charger that came with the phone, I can charge from 0-100% in about 2 hrs and 15 mins which is good enough for me

mexikanos11 said:
Ok u have official information but me to....
https://www.qualcomm.com/products/snapdragon/quick-charge
Then u see they write every single page different things...
Click to expand...
Click to collapse
You might want to scroll down a bit and read:
Remember, a Quick Charge 2.0 certified power adapter is required to charge at the speeds Quick Charge 2.0 is designed to allow. Different Quick Charge 2.0 implementations may result in different charging times.
Click to expand...
Click to collapse
Also check https://www.qualcomm.com/documents/quick-charge-device-list, Mi4c is clearly listed (on page 2) and thus certified by Qualcomm.

I know xiaomi says 2.0 but only what i try to tell u quick charge compare to my note 4 is not quick....
What i try to say its good to tell to people quick charge 2.0 are sometimes completly different...
I was thinking when i was buing that phone will be the same like note 4 but is big different.
And IF somebody thinking about buing this phone he should now its not charging in 30min 50% of your battery
I was trying note 4 charger and xiaomi charger and now i order this one
http://www.ebay.com/itm/281867423580?_trksid=p2060353.m2749.l2648&ssPageName=STRK:MEBIDX:IT
And how u see supouse to charging in 30min and i understand couple % less but that not working how should

It is working how it should, because it is working the way the manufacturer calibrated it to. All hardware is different.
You can't expect everything QC 2.0 to charge at the same rate of 60% in 30 min or whatever. If only because 60%/2000mAh is half of 60%/4000mAh for instance and rates will differ depending on the current capacity etc etc.

Is not point to argue anymore just i tell u only
Note 4 have 3220 and xiaomi 3080mah thats mean is not big different thats why i supraised.
What i know now in Samsung quick charge 2.0 works much better than xiaomi quick charge 2.0.

Reseting charger when it overheats (?)
I had an interesting experience with the Xioami Mi 4c charger when on a recent vacation in South East Asia.
I purchased a 4G (LTE) sim for the vacation and I was extensively using the phone as a wifi hotspot for my wife and my other wifi capable devices (laptops, tablets). Because we could use the Internet for some time, while using the Xioami I mistakenly would keep the phone plugged into the charger so not to run down the smartphone battery. Then on one hot day, after using the phone as a hotspot with charger plugged in (and charger was very warm) the charger failed to charge the phone anymore, and at that time I was only able to charge the Xiaomi via my computer with the USB cable (which is much slower to charge). A few days went by and the charger still did not work.
So I decided to try a technique that worked with my old Asus TF101 transformer's charger.
I wrapped the Xiomi Mi 4c charger inside two layers of plastic bags, and placed the charger (thus wrapped) into a freezer overnight. I put it in the plastic bags to protect it against humidity. The next day I took the charger out of the freezer, took it out of the plastic bags, and let it sit for a few hours so any humidity would evaporate. I then tried the charger with the phone and it worked fine with the phone, charging at the same speed as I have observed in the past.
Since then, I have not kept the Xiomi Mi 4c charging with the charger at the same time as I used it as a wifi hot spot. Instead I plug the Xiaomi into my laptop computer to provide power when using the Xiaomi Mi 4c as a hotspot, and this works much better.
.

Does anyone know how to ask the charger to switch to 9V or 12V? Is this done via D+/D- lines, or with pullup/pulldown on new Charging Command pin?
Can't find an official specification anywhere...
EDIT: found it, page 9: http://industries.ul.com/wp-content/uploads/sites/2/2016/08/QuickCharge-2.0-Application_v12.pdf
Set D+ and D- to 0.6V for 12V
Set D+ to 3.3V and D- to 0.6V for 9V

can you unlock it?

Quick charge or not?

Does this phone support quick charge? I ask because 2 coworkers got the Blu and let me play with it. Might be returning my Nexus 6 and grabbing one. Issue is I have the Anker 18W quick charger w/led. The led turns green whenever a phone that is quick charge compatible is plugged into it, and stays blue when a phone is charging at normal voltage. When I plug in my Nexus 6 or my Zenfone 2, or my wife's S6 the light turns green immediately, yet when I plug in the Pure XL it stays blue just like my older phones. So does this phone support quick charge really? I see in the specs it states it does.

The phone claims to have quick charge. I've been using it since last night and if it had quick charge it's a slow quick charge. Coming from the note 4 it's SIGNIFICANTLY slower for sure. It's border line a deal breaker for me. The battery life isn't as good so far and the quick charge is slower.

Im with you on the quick charge being slower. Coming from using the Nexus 6 for the past few weeks, I can argue that the battery life is slightly better than the Nexus, but the Nexus would charge lightning fast, kinda made the battery a non issue. Im gonna wait until the battery on my Nexus and the Blu are both at around 50%, then Ill plug the Nexus into a standard charger and the Blu into a quick charger and see if there is a difference.

But does blu support the quick charger of nexus 6 ? I think it is silly that now all the phones use same charging port but manufacturers make different quick charge protocols.
You can install a charge monitor app, for example "ampere" from market to see the charging speed. All that matters is the mA charge speed. Quick chargers will charge faster from 0% to 50%-85% because they can pump in power faster into the empty battery, but they have to slow down as the battery gets full or too warm.

yurtesen said:
But does blu support the quick charger of nexus 6 ? I think it is silly that now all the phones use same charging port but manufacturers make different quick charge protocols.
You can install a charge monitor app, for example "ampere" from market to see the charging speed. All that matters is the mA charge speed. Quick chargers will charge faster from 0% to 50%-85% because they can pump in power faster into the empty battery, but they have to slow down as the battery gets full or too warm.
Click to expand...
Click to collapse
I haven't gotten Ampere to show a normal drain value (0 mA is all it will display) and the charging values are all over the place (1.8A - 2.8A). I looked at various stories and MediaTek's specs on the MT6795 and there isn't anything about fast/quick charging. I think I charged about 40% (50% to 90%)in 20 minutes the second day I had it. It has a couple charge cycles on it now, though, so I will pay attention the next time the battery is low and see how fast it charges.
---------- Post added at 03:22 PM ---------- Previous post was at 03:16 PM ----------
DrBrick said:
I haven't gotten Ampere to show a normal drain value (0 mA is all it will display) and the charging values are all over the place (1.8A - 2.8A). I looked at various stories and MediaTek's specs on the MT6795 and there isn't anything about fast/quick charging. I think I charged about 40% (50% to 90%)in 20 minutes the second day I had it. It has a couple charge cycles on it now, though, so I will pay attention the next time the battery is low and see how fast it charges.
Click to expand...
Click to collapse
I will add that I have an Aukey QuickCharge 2.0 charger and it only shows a 1.4A charging rate but the Blu charger shows 2.8A so there is probably something MT specific going-on.

Quickcharge 2.0 charger is probably incompatible with MTK fast charge. 1.4A sounds like the normal charge current. But 2.0 - 2.8A sounds right for fast charging. Perhaps the values are correct, it may be fluctuating. If I remember correctly, I saw 2.2A in my nexus 6 when it was 75% charged. (I should also check it from empty but I usually just keep it in charge so charge never goes under 50%).

It does fast charge using the charger that came with the phone.... If you look at the charger specs it reads 5/9 volt 2.1 amps.... Probably has a small procceser in the charger the phone sends a signal to that switches it to 9 volt charge

My phone charges very fast with included charger. I also tried a no name Quick Charge adapter ... also charges fast, but first shows Over Voltage Warning

The rate of charge is much higher when the battery % is low.
Screenshot from GSam Battery Monitor.
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Sent from my PURE XL using Tapatalk

My HTC One X9 chipset is Mediatek MT6795 Helio X10. At HTC India website, they say something like 'Fast charging (5V/1.5A)' which doesn't sound faster obviously and my phone takes 2 hours to charge. My Samsung Note 2 was still faster (5V/2A). Mediatek MT6795 supports Pump Express Plus charging. Do you think my HTC phone support faster charging (higher voltage charging)?

its been my expierence that using the included charger fast charges, but if i use a "quick charge" charger it slow charges... but if I use a generic 2.4A charger it charges fast... stock Samsung Note charger SUCKS on these phones

Golden Shovel for me, but I think there's no need to create another topic
I have the new Blu Vivo XI+, which came with a " fast charging 5v/2A charger", thing is my phone has the P60 processor, which supports Pump Express 4.0, thats 5v/5A, it's ridiculous that Blu is shipping a common charger with a processor capable of such fast charging, anyone knows if the technology must be enabled on the phone itself, or if I just buy a 5v/5a charger it will work?

replacement charger or third-party charger

I've spent a solid half hour searching every place I can think of, but haven't come up with anything. Has anyone managed to find a third-party replacement charger that will activate rocket charging (double lightning bolts), or found a place that sells OEM replacement chargers (especially in/to the UK)?

In India, its available only at the service centres for Rs. 1600 (GBP 19).

Thanks. Lenovo or Motorola service centres?
Any news of any third-party chargers that actually work with rocket?

http://www.ebay.co.uk/itm/LENOVO-P2...hash=item1c8be813ce:m:mp4_TNWLyG6E88sQ65w2m1A

Thanks, but I literally just got a refund for a very similar product on ebay about 10 minutes ago. Sellers list the same item, which is a general "adaptive quick charger," for dozens of phones and don't bother to find out if they will work.
It seems that Lenovo's is somewhat proprietary and any old adaptive fast charger won't work.

Hi
I can confirm this car charger works in fast charging mode for the P2 and S7 Edge, it a multi standard charger
The P2 uses MTK Pump express so you need to look for a charger that supports this.
https://www.aliexpress.com/item/IBD...-Mobile-Phone-Travel-Adapter/32812410639.html
I can really recommend the IBD charger its really well built and works with other phones as well so future proofed as well
I live in the UK and it took about 9 days for delivery from the seller above

Thanks! This is really helpful, much appreciated.

It looks like the following Sony phones also support MTK Pump Express charging: (as per http://bit.ly/2vH9wfl)
-Xperia™ XA/XA Dual SIM
-Xperia™ XA Ultra/XA Ultra Dual SIM
-Xperia™ XA1
-Xperia™ XA1 Ultra
I've gone ahead and ordered a charger from this link: http://www.ebay.co.uk/itm/162631584402 , which specifically mentions the MTK compatibility. I'll check back in and let everyone know if it works.

The info in this thread sounds wrong. The Lenovo P2 doesn't use mediatek chipset, so it shouldn't have MTK Pump Express charging. However, I've charged my P2 using 2 different Quick charge 2.0 chargers and they work with the double lightning bolts.
Since the chipset is a qualcomm snapdragon, I would've thought only QuickCharge 2.0 (or 3.0) chargers would work. But @imi2003 has experience to the contrary so I won't fight him on that.
Edit:
imi2003 said:
Hi
I can confirm this car charger works in fast charging mode for the P2 and S7 Edge, it a multi standard charger
The P2 uses MTK Pump express so you need to look for a charger that supports this.
https://www.aliexpress.com/item/IBD...-Mobile-Phone-Travel-Adapter/32812410639.html
I can really recommend the IBD charger its really well built and works with other phones as well so future proofed as well
I live in the UK and it took about 9 days for delivery from the seller above
Click to expand...
Click to collapse
Just editing this post coz I've actually clicked through to your link. I don't know why you say that's an MTK Pump Express Charger. It's clearly a Quick Charge 3.0 charger as it states in the title and multiple times in the description. This should further confirm that any Quick Charge 2.0 or 3.0 charger can charge the Lenovo P2 fast and with double lightning bolts.
@ericastill Just buy any charger on amazon UK that claims to have Quick Charge 2.0 or 3.0.

@ericastill Just buy any charger on amazon UK that claims to have Quick Charge 2.0 or 3.0.[/QUOTE]
My QC 2.0 charger (which worked fine on an S7 edge and G5 plus) won't quick charge my P2. It's not impossible that there's something wrong with my phone, though everything else is working fine.
In any case the sony charger I ordered supports both Pump Express and QC 3.0, so maybe that will do it.

Hi all
Just to clarify the car charger I linked to in my previous post, supports the following charging modes
QC 2.0 ,QC 3.0, MTK PE2.0, Huawei FCP/SCP
I got the charging specs from a different forum which I have linked below.
ht t ps : / /w3bsit3-dns.com/forum/index.php?showtopic=761560&st=7760
I hope this goes some way to end the confusion around charger compatibility. It might be a idea to make a sticky somewhere with proper specs.
If the P2 was QC 3.0 then the P2 wall charger would fast charge my S7 Edge, which it doesn't.

Better invest on powerbank...
Charger Model :
Xiaomi Slim 10,000mAh PowerBank Pro (Qualcomm QC2.0 certified).
micro USB cable : Xiaomi stock cable.
Charging rate:
11% to 22% in 15 mins
11% to 33% in 30 mins
11% to 47% in 45 mins
11% to ??% in 1 hr
11% to 66% in 1 hr 15 mins
11% to 74% in 1 hr 30 mins
11% to 83% in 1 hr 45 mins
11% to 91% in 2 hrs
11% to 96% in 2 hrs 15 mins
11% to 99% in 2 hrs 30 mins
11% to 100% in 2 hrs 35 mins
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*Edited* to sayThe Sony XA1 charger I bought now only charges for about a minute and then switches off (though it works fine charging other items such as my kindle). The hunt continues!

The P2 charger has a capacity of 25W. So find a charger of that same capacity and you can get the fast charging in Lenovo P2.

5zan said:
The P2 charger has a capacity of 25W. So find a charger of that same capacity and you can get the fast charging in Lenovo P2.
Click to expand...
Click to collapse
Do not give wrong advices to the people. You have no idea what are you writing about.
Quick charge is not only about output power of the supply but also possible output tension. In case of Lenovo Quick charger these are: 5.2V, 7V, 9V and 12V
---------- Post added at 05:14 PM ---------- Previous post was at 05:05 PM ----------
http://www.trustedreviews.com/reviews/lenovo-p2-battery-life-and-conclusion-page-4
"Charging is fast, too. You can go from empty to full in around 1hr 30mins using the bundled Rapid Charger. Rapid Charge is Lenovo’s own 24W fast-charging tech, and you’ll only get it from the supplied adapter."
http://www.gsmarena.com/lenovo_p2-review-1557p3.php
"We initially thought that the Rapid charging tech used by Lenovo must be Quick Charge 3.0 since the P2 uses a Qualcomm chipset. However, our third-party QC3.0 charger didn't charge the P2 particularly fast, so the jury is still out on whether Lenovo is using a proprietary charging technology. "
In short: only original Lenovo charger is good for our phones

Lenovo P2 can NOT be fast charged with qualcomm quick charge 3.0
Lodd said:
The info in this thread sounds wrong. The Lenovo P2 doesn't use mediatek chipset, so it shouldn't have MTK Pump Express charging. However, I've charged my P2 using 2 different Quick charge 2.0 chargers and they work with the double lightning bolts.
Since the chipset is a qualcomm snapdragon, I would've thought only QuickCharge 2.0 (or 3.0) chargers would work. But @imi2003 has experience to the contrary so I won't fight him on that.
Edit:
Just editing this post coz I've actually clicked through to your link. I don't know why you say that's an MTK Pump Express Charger. It's clearly a Quick Charge 3.0 charger as it states in the title and multiple times in the description. This should further confirm that any Quick Charge 2.0 or 3.0 charger can charge the Lenovo P2 fast and with double lightning bolts.
@ericastill Just buy any charger on amazon UK that claims to have Quick Charge 2.0 or 3.0.
Click to expand...
Click to collapse
I have 2 Anker Qualcomm Quick Charge 3.0 wall chargers one with single port and one with multiple ports. I have tried my lenovo p2 with both of them (in QC 3.0 ports) and it does not do any rapid charging.
I don't see any double bolt or double charging sign even when I have switched on power saving mode with the physical power save button on the side.
My Lenovo P2 model is p2a42 and I am on the lastest nougat software update that is P2a42_S244_170725_ROW.
When I go to detailed battery menu in settings during charging it just says "Charging on AC" i.e. I do not see anything like rapid or fast charging or anything like that.
I also installed the Ampere app on nougat I never saw the voltage going above 5v (actually always stay slightly lower than 5v) in that app. Unfortunately, amps calculation is not working in that app I don't know why. I do not know if it is QC 3.0 instead of QC 2.0 that is making this difference.
Also my phone was at 4% charged when I did this test.

Lodd said:
The info in this thread sounds wrong. The Lenovo P2 doesn't use mediatek chipset, so it shouldn't have MTK Pump Express charging. However, I've charged my P2 using 2 different Quick charge 2.0 chargers and they work with the double lightning bolts.
Since the chipset is a qualcomm snapdragon, I would've thought only QuickCharge 2.0 (or 3.0) chargers would work. But @imi2003 has experience to the contrary so I won't fight him on that.
Edit:
Just editing this post coz I've actually clicked through to your link. I don't know why you say that's an MTK Pump Express Charger. It's clearly a Quick Charge 3.0 charger as it states in the title and multiple times in the description. This should further confirm that any Quick Charge 2.0 or 3.0 charger can charge the Lenovo P2 fast and with double lightning bolts.
@ericastill Just buy any charger on amazon UK that claims to have Quick Charge 2.0 or 3.0.
Click to expand...
Click to collapse
would you mind sharing with us the model of the 2 chargers that could fast charge the P2? any link to buy them would be great too.

I heard that Infinix cq24ax charger support double lightning. It got the same spec with original p2 charger
who ever tried it ?

Just bought an 12v 2a charger from online shop in Vetnam. Rocket charge working fine. I think you can buy any charger from lenovo with 5v 7v 9v 12v 2a, it should work for p2

Did anyone find a charger? Can you please share a link?