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Fast Charging "Homemade". What are the risks?

I lost my original Fast Charger in my school and now I'm without one. The problem is, that sometimes I need that great feature.
My question is, can I disassembly a random 9V charger and "adapt" a Micro-USB cable to it? Since the GS6 supports 9V I don't see a problem there. Or must I short some data pins in order to enable fast charging to not fry the device?

Why don't you just buy a new one?

I definitely think that's not a good idea. Buy a new one. If you are worried about Samsung charger price you can buy a cheaper charger that support Qualcomm 2.0 quickcharge, it's compatible.

I thought the whole thing was dynamic, that at lower battery levels it charges at different amperage than higher levels, and at a certain point it kicks over to 5V. It doesn't charge at 9V the whole time.
Sent from my SAMSUNG-SM-G920A using XDA Free mobile app

@quarlow is right, it's dynamic.
You should buy a new one, much more safe.

If I plug a normal 'old' 600mA 5V charger to it, it says that it will charge in 6 HOURS! I can't wait for that.
I have disassembled the charger, unsolded the Female USB plug and solded it to an 9V charger from an TP-Link Switch.
I plugged it in and the phone started charging. It says "Cable charging" instead of "Fast charging" and it stated 6 hours too. After that, I shorted the data pins and then the time reduced to 2 hours...
I also tried a 12V charger (1.5A), but it don't charged, nor maked any charging sound.
Now I concluded two things:
1. Samsung S6 phones are very robust with charger voltages :silly:
2. It isn't that easy to make a fast charger.
I hope I have saved some questions now
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Thanks for all the replies, but now I haven't money to buy one. Where I live, they are really expensive!
Oh, aaand, I don't know if it's a good idea to charge at 9V the whole time, because when it reaches 100%, I hear constantly the charging sound.

Looking at a Samsung Travel Adapter change...
https://www.dropbox.com/s/54xt2u315nn1tkt/2015-09-27 14.04.18-1.jpg?dl=0
Output is: 9v at 1.67A, or 5v at 2.0A. It's listed as an adaptive charger.

numloxx1978 said:
Output is: 9v at 1.67A
Click to expand...
Click to collapse
Thanks, I will search for an 9V charger that has this amperage.
Btw, some chargers have adaptive 12V output.... Is that QuickCharge 3.0?

A normal Samsung or LG charger of 1.8A/2A output still charge my S6 in about 1.5 hours. Get one from a relative or friend or buy one if the S6 charger is too costly

Fullmetal Jun said:
Get one from a relative or friend or buy one if the S6 charger is too costly
Click to expand...
Click to collapse
I tried already. These options are not available
:silly:

Info
Fusseldieb said:
I lost my original Fast Charger in my school and now I'm without one. The problem is, that sometimes I need that great feature.
My question is, can I disassembly a random 9V charger and "adapt" a Micro-USB cable to it? Since the GS6 supports 9V I don't see a problem there. Or must I short some data pins in order to enable fast charging to not fry the device?
Click to expand...
Click to collapse
the factory charger got in fire sometimes i don know abt home-made chargers... take care dude

You gotta be kidding. Spend $10 and get a QuickCharge 2.0 adapter.
Don't risk it. Samsung Fast Charge is the same thing as Qualcomm Quick Charge. It's Qualcomm's technology, licensed with no loyalty fee.
QuickCharge 2.0 uses the data pins to negotiate the charge voltage with your power adapter. Otherwise it just uses 5V.
I see on my S6 it stays at 9V all the time. The phone pulls the current it needs, so you don't have to try to match that current on the power adapter side. Just make sure it's at least 1.6A, preferably 2A. I never saw my S6 pulling 2A at 5V or 9V.

I'd imagen as this a form for devs . And this guy is trying to create somthing . The devs would be a bit more yaknow . Creative. First off
The guy is trying to make the adaptive charger .give him a bit of credit . I'm currently making a portable charger and I want it to use samsung fast charge
I'm using 18650 battery's 4.2 volts fully charged 3.7 volts give or take when they sag.
So if there is anyone with half a brain out there. How do you get the 9v (8.4) amp to make it a fast charger ( under one and a half hours. ) I'll worry about building the switch to the 5 volts after ( 4.2)
Is it loop the pins . Pin to earth pin to positive loop pins to negative ) the information isn't out there so surely some one has the information. ( just FYI the sgs6 is perfectly capable of being charged at 9 volts. The battery is a nine volt according to the build information explains why charging with any other charger takes 6 hours. .
Also to the op if you did indeed have a similar idea to me just tell erm straight I wanna mess about with low current and voltage dc haha. ( also I tried 18 volts samsung phones do no alow the charge over 9volts so it cannot hurt you're phone

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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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?

Mi 4C Charging Current (simple test)

I have found Mi 4C's charging current quite bizarre, more so than what was shown in: http://forum.xda-developers.com/mi-4c/general/xiaomi-mi-4c-charging-analysis-part-1-t3209028
I don't have fancy equipment so I just downloaded the Ampere app to test the charging current. While the app is not meant to be an accurate measure of the current, I find its result quite consistent with the charging time that I obtain. (My Mi 4C is running TS CM13.)
Results:
1. Original charger + original cable = 4.41V/1220mA
Not sure if the voltage measurement is correct. I thought it would be 9V as indicated in the post which I link to above. But at least the current is quite consistent with what the others have got. It takes around 2 hours for an full charge.
2. Computer USB 2.0 port + original cable = 4.24V/250mA
It takes forever to charge. I have no idea why the current is so low. The same USB port is able to output 450mA on another phone.
3. Original Charger + 3rd party cable = 4.21V/170mA
I have no other USB Type-C device so I can't test if the cable is functioning properly. But this is just weird.
4. Portable Charger (5V/1A output) + original cable = 4.36V/860mA
This feels normal.
So I have two questions:
1. Why is charging through computer USB port so slow? I have selected "Charging only", not running any ADB.
2. Can Mi 4C work well with 3rd party cables?
It would be great if you could share your charging experience with Mi 4C. Thanks in advance.

I think the thing with Ampere is, it needs to have your screen on to measure. And it doesn't really measure the current, it takes the average charge rate of your battery and converts that to Amperes based on your total battery capacity (that is why it takes a few seconds to show). So whatever you read in ampere is your net charge rate, not what the charger is providing (whatever is draining your battery is included in the equation, your screen will be the biggest drain, you can test this with the brightness).
So that is why your usb charging looks like it's at half rate, it is probably 450-500 when the screen is off.
The 4c works well with 3rd party cables, provided they are not faulty of course. After all, the original cable is also just a transformed usb 2.0
The phone will basically never pull more power than it can handle. The charger however could be damaged if it's coupled with a bad cable and a device that draws more power.

legacyofthevoid said:
I have found Mi 4C's charging current quite bizarre, more so than what was shown in: http://forum.xda-developers.com/mi-4c/general/xiaomi-mi-4c-charging-analysis-part-1-t3209028
I don't have fancy equipment so I just downloaded the Ampere app to test the charging current. While the app is not meant to be an accurate measure of the current, I find its result quite consistent with the charging time that I obtain. (My Mi 4C is running TS CM13.)
Results:
1. Original charger + original cable = 4.41V/1220mA
Not sure if the voltage measurement is correct. I thought it would be 9V as indicated in the post which I link to above. But at least the current is quite consistent with what the others have got. It takes around 2 hours for an full charge.
2. Computer USB 2.0 port + original cable = 4.24V/250mA
It takes forever to charge. I have no idea why the current is so low. The same USB port is able to output 450mA on another phone.
3. Original Charger + 3rd party cable = 4.21V/170mA
I have no other USB Type-C device so I can't test if the cable is functioning properly. But this is just weird.
4. Portable Charger (5V/1A output) + original cable = 4.36V/860mA
This feels normal.
So I have two questions:
1. Why is charging through computer USB port so slow? I have selected "Charging only", not running any ADB.
2. Can Mi 4C work well with 3rd party cables?
It would be great if you could share your charging experience with Mi 4C. Thanks in advance.
Click to expand...
Click to collapse
look at this!
https://forums.oneplus.net/threads/charging-analysis-between-oneplus-2-and-xiaomi-mi-4c.387573/
The AMPERE App shows you the current chargeing ampere minus the usage and no Votlage from the charger!
The app show you 4,41 V and 1220 mA that says the battery has a voltage 4,41 V that is the charge state (battery %) and the
1220 mA say that the charger charge with that speed minus the actual using (-~300mA) 1220+300=1520 mA voltage unknow

Can't really say that Ampere or any other app for that matter is accurate in measuring the charging current. I would say get an actual hardware (i know there's one that you connect to the charger) that measures charging current if you really want to test charging current that bad.
As for me I only charge my phone in 2 different ways:
1. Thru the stock wall charger. From 0-100, it takes roughly 2hrs and 20mins. Quite fast for a battery with 3080mAh. Slower when compared to other 2015 devices with quick charge 2.0 i.e. the LG G4 that charges 0-60 in 30mins vs the Mi 4c's 0-40 in 1hr. Hopefully this is just a kernel limitation which remains to be seen till Xiaomi releases the kernel source.
2. Thru my powerbank with 2A output which takes about 3hrs+ from 0 to 100

Try this app: https://play.google.com/store/apps/details?id=com.slash.electron&hl=en

I think the decision of making USB 2.0 with type-C connector is kinda faulty. I tried using my Mi Pad 2's cable which is a true type-C and the charging time is much faster. I don't want to use 4c's cable anymore.

So far the most effective combination for me has been aftermarket qc2.0 charger and factory cable. With that combo, charge times have been comparable to my moto x (2014)
Using any of my micro USB cables with a type c adapter has resulted in substantially slower charge times, regardless of charger.
I have a couple other third party type c cables coming tomorrow. Hopefully I can find another successful combination.

does it come with usb3 (+cable)?

As far as I know it's a standard USB cable with a type C end slapped on it.

sounds kinda useless

I wouldn't go so far as to say its useless. It charges the phone and allows for data transfer. Those are fairly useful things.

well, i was more relating to the nature of the cable as stated before:
leledumbo said:
I think the decision of making USB 2.0 with type-C connector is kinda faulty. I tried using my Mi Pad 2's cable which is a true type-C and the charging time is much faster. I don't want to use 4c's cable anymore.
Click to expand...
Click to collapse
anyway, i got the phone myself now and gonna try some other cables/chargers. my plan is to compare AUKEY, Blitzwolf, RAVPower and Qualcomm devices. big effort, but i have made pretty bad experiences with chargers (slow, noisy etc...)

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i have tested a new Car charges from China... QC2 and it Works very good! the Phone charges veeery fast
Gesendet von meinem Mi-4c

Fast car Charger

Anyone know of a car charger with Huawei's fast charge??
Skickat från min FRD-L19 via Tapatalk

jolerius01 said:
Anyone know of a car charger with Huawei's fast charge??
Skickat från min FRD-L19 via Tapatalk
Click to expand...
Click to collapse
http://www.ebay.com/itm/182222847915
or
http://www.ebay.com/itm/182314534960
Both have support Huawei FCP - 9V/2A

Is there any one with dual ports??
Skickat från min FRD-L19 via Tapatalk

jolerius01 said:
Is there any one with dual ports??
Skickat från min FRD-L19 via Tapatalk
Click to expand...
Click to collapse
Try this one: https://m.aliexpress.com/item/32598913633.html#autostay

This car charger support Huawei FCP
https://www.alibaba.com/product-detail/Compatible-with-HuaWei-FCP-IBD-universal_60481400296.html

I've been using this one for a month or two now. Works fine: https://www.aliexpress.com/item/ITI...32633009425.html?spm=2114.13010608.0.0.wVRln2

Can anyone confirm that quick charge really works? I mean there is a quick charge notification in the lock screen and the two thunderbolts instead of simple charging and one thunderbolt?
@tap007 @perzan07 @evilpaul13
As long as I know most of the market chargers support Qualcomm Quick Charge in any of its three versions. QC 3.0 has backward-compatible with QC 2.0 and QC 1.0 devices so buying a QC 3.0 is the simplest answer for a devices that use a Qualcomm processor but Honor 8 uses a HiSilicon Kirin 950.
QC 1.0 is 5V and 2.0A and QC 2.0 and 3.0 are 5/9/12V 3A. The chargers have a driver based in Intelligent Negotiation for Optimum Voltage (INOV) to know how to charge the phone. I've read somewhere that Huawei QuickCharger has it own charging protocol and can charge QC 2.0 devices but a QC 2.0 charger cannot charge a Huawei (not Qualcomm) device.
So what I expect from all of those quick chargers in the market is that NOT recognise the Honor 8 as a compatible device and give it less than 5V 2A (10W), probably 5V 1A (5W) that are not the 9V 2A (18W) expected.
That's why I ask for a confirmation that charger and device recognise themselves and quick charge is really activated.
PS: In their webpage, Aukey says the following: "AUKEY AiPower Adaptive Charging Technology gives all your USB powered devices exactly what they need with up to 2.4A per Ai USB Port." and "Combine AUKEY AiPower with Qualcomm Quick Charge in a single USB port and you get PowerAll Adaptive Charging for all USB powered devices. One USB charging port to rule them all!" so maybe their chargers are compatible but I still looking for a confirmation somewhere. (I don't trust too much Alibaba, aliexpress, eBay... product descriptions).
Thanks!

I've gotten two chargers off there and both, including the car one I linked, support Huawei's Fast Charge. I get the Fast Charge message, my battery icon turns green AIDA64 says I'm charging at >1A. My battery has been lasting long enough I haven't bothered charging it in the car much though.

for the time being available only in china but maybe it will come also to other countries: HUAWEI SuperCharge CAR charger http://www.vmall.com/product/944393591.html

evilpaul13 said:
I've gotten two chargers off there and both, including the car one I linked, support Huawei's Fast Charge. I get the Fast Charge message, my battery icon turns green AIDA64 says I'm charging at >1A. My battery has been lasting long enough I haven't bothered charging it in the car much though.
Click to expand...
Click to collapse
Based on this I ordered the itian charger linked above, it does NOT work for fast charging with the honor 8, no worries I'm not upset about it I just think people should know that this charger DOES NOT WORK for fast charging with the honor 8, I'm still looking for a car charger that will

Fetalisk said:
Based on this I ordered the itian charger linked above, it does NOT work for fast charging with the honor 8, no worries I'm not upset about it I just think people should know that this charger DOES NOT WORK for fast charging with the honor 8, I'm still looking for a car charger that will
Click to expand...
Click to collapse
I was unable to order them so I ordered an Aukey one with AiPower that I think could work. If does I'll post it here. If not I'll resell it to someone with a QC device. Thanks for the advice!

Well I've received the Aukey charger and I've to say that the info I read on some forums is wrong and it is not compatible with our device (and probably not compatible with any not Qualcomm Huawei/Honor device). The item bought was that:
http://www.ebay.es/itm/252404366500?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT
It official info here:
https://www.aukey.com/products/dual...ick-charge-2-0-aipower-with-usb-a-to-c-cable/
Review:
It came with 2 high quality USB cables, one microUSB and one USB-C. It looks as a high end product and works fine as a regular charger. May be your car charger if you are the owner of a Qualcomm Quick Charge 2.0 compatible device. About the seller just say it took 4 weeks to be in my place (one week less than average China packages).
Check pics attached. Regards.

I have the Elephone "Tornado" charger on order from the 'Bay, and supposedly it supports HFCP AND comes with dual charging ports.
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Let's hope my snail parcel arrives sooner rather than later lol.

Anker
I have this one for the car. I never see "fast charging" when using either port, but it does charge faster than a standard "cheap" car charger.
https://www.amazon.com/Anker-Charge-Charger-PowerDrive-PowerIQ/dp/B01A4ZGLZ8/

https://www.aliexpress.com/item/Ori...lgo_pvid=35e6e026-62be-4052-a3ba-f4ca76535a1b

eiraku said:
I have the Elephone "Tornado" charger on order from the 'Bay, and supposedly it supports HFCP AND comes with dual charging ports.
Let's hope my snail parcel arrives sooner rather than later lol.
Click to expand...
Click to collapse
Any updates on the charger ?

Huawei does not support FAST CHARGING, it has its own unique charging which is Super Fast Charging, if you bought a car charger or any charger and use it and it did not show Super Fast charging Notification or your battery icon on the upper right has no 2 electric logo inside the battery icon it means you bought the wrong charger.

Hi
You have to look for Huawei AP32 it's Original Huawei wall charger
and Huawei AP38 it's Genuine Huawei Car charger.

Just to add more info regarding the ''fast charging''
I have orderd from ebay some cheap usb type C cable
And it works fine and gives the ''fast charge'' messege and I have
tested it ... it also takes same time in minutes to charge the phone..
So that means it has no difference to use that usb cable..
Some of my phones as soon as I changed the usb cable were not fast charging
That why I am reporting it ..

To anyone interested, I searched Nillkin's site for Honor 8 accessories and it gave a result for a car charger, called Nillkin Celerity Car Charger. It does support 9V/2A so I believe it should work with Honor 8.
I also found it in eBay cheaper than in Nillkin's site.
Also, Huawei Honor AP31 car charger should the job. It does support quick charge. Found it in eBay for about 25 US$.
P.S. Sorry but I cannot post links, since this is my first post.

How to charge with PD 27W?

On xda site they said the OP8T can charge up to 27W with a PD charger however I tried many PD chargers with all kind of cables combination and it never goes above 1-5W.
I'm not the only one, there are many posts on reddit about this.
What's your experience on this?

Same over here, can't get it over 5w.
Charging voltage has something to do with it, what's ur charging voltage?

Using a digital usb meter I noticed all PD chargers stay a 9V with 0.45A output. I tried a kernel on XDA that it's supposed to force fast charging but i didn't do anything.

I find it very weird nobody is talking about this on XDA, only a few threads on reddit.
If you are outside and you don't have your stock OP 65W charger with you you have a high possibility of not being able to charge at all since it can take 5 hours to a day a this speed. How is this even legal?

-sandro- said:
I find it very weird nobody is talking about this on XDA, only a few threads on reddit.
If you are outside and you don't have your stock OP 65W charger with you you have a high possibility of not being able to charge at all since it can take 5 hours to a day a this speed. How is this even legal?
Click to expand...
Click to collapse
I may be a little confused here, but I get pretty dang close to 27W of charging power when using my USB C charging brick that came with my Samsung Galaxy Book 360. Franco kernel manager usually says I average around 25W charging power. I'm assuming the USB brick is USB-C with PD.

azoller1 said:
I may be a little confused here, but I get pretty dang close to 27W of charging power when using my USB C charging brick that came with my Samsung Galaxy Book 360. Franco kernel manager usually says I average around 25W charging power. I'm assuming the USB brick is USB-C with PD.
Click to expand...
Click to collapse
HI,
First of all (I'm using a usb tester) I noticed the cable has nothing to do with this problem. I have one BaseUS 100W PD charger, one UGreen 36W PD charger, one BaseUS 65W power bank and one 18W power bank. They are all able to provider PD charging at 12/20V at their maximum advertise wattage with my devices and a usb-c laptop. They can also provide 9V/3A (tested).
I noticed then when the battery is below 60% connected with a usb-c cable they all default to 9V/0.45A and sometimes even 0.22A (last night I left it to charge and in 8h it only charged 7%!) when above that you can get 5V/2.5A which is much better.
So I'm not sure what exactly those PD chargers are missing if they work with all other devices.
Also I find it weird you can see 25W from franco kernel since the phone shows half of the wattage being a dual battery. So yhat would be a real 50W.

Connected to a 100W PD charger at 1W
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-sandro- said:
Connected to a 100W PD charger at 1W
View attachment 5527929
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Latest OOS?

Yes of course.

Bro, something is wrong.... I just tested my google chromecast with google tv power block and cable and I am getting this:

I'm sorry what is the link of this charger?

-sandro- said:
I'm sorry what is the link of this charger?
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I don't know exactly, whatever google uses for this: https://store.google.com/us/product/chromecast_google_tv?hl=en-US

It's a 5V 1.5A so that value you see in FKM cannot be real.
You should use BatteryGuru and multiply by 2.

-sandro- said:
It's a 5V 1.5A so that value you see in FKM cannot be real.
You should use BatteryGuru and multiply by 2.
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Well I guess this block is different. It says 5V 3A or 9V 2A, so 18W would make sense no? I'll try a different app. This is from the battery guru app and electron app:

Yes makes sense now. I'll try to find other chargers at this point. I know everything I have is not supported by this phone.

It's like u can't find a compatible charger lol whatever charger I tried charges at 9v 1.8a until the phone reaches 65% and then it drops to 4.5v 0.4a and it takes ages to get from 65% to 100%
Idk what the hell is this problem but I know for sure it's their dual battery design messed up for real

Could anyone try monitoring charging voltage and amperage across different charging percentages and report back.
And for monitoring use OnePlus toolkit it's baked in the rom, *#800# to access it then tap on enter and tap on tools to see charger option and then choose it.
It displays the voltage and current without having to multiply it.

There was a thread at OP forums about this issue.
OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.
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I suppose the problem is also in the technology itself:
In contrast to USB Power Delivery and Qualcomm Quick Charge technology, which increases the voltage during fast charging, VOOC/Warp Charge/Dart Charge use a higher current than standard USB charging.
All versions of VOOC require a proprietary cable to work. In addition to electrical requirements like thickness (low electrical resistance) to handle the high currents without overheating, the VOOC 2.0/Dash protocol requires a fifth pin on the (USB-A to USB-C) cable to communicate through. Without such communication, the charger runs at a limit of 5 V/1.5 A. From VOOC 4.0 this limit elevated to 5V/2.0A.
On the Android phone end, the VOOC communication code is open source under GNU General Public License (GNU GPL) version 2 as a part of the modified Linux kernel, and has been used by custom ROMs like Lineage OS.
So i presume it's just not compatible with many PD chargers.

Oppo Gan Charger Kit supports 65W charging protocol，You can buy it about 80-90RMB on the Xianyu app 。There is also a power bank that supports 65W charging called Sdoutech but a little expensive , 400RMB/26800mah about four times for 8T

Mainly I want to charge with other chargers and power banks I already have not buying other VOOC chargers.
Rootk1t said:
There was a thread at OP forums about this issue.
OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.
forums.oneplus.com
I suppose the problem is also in the technology itself:
In contrast to USB Power Delivery and Qualcomm Quick Charge technology, which increases the voltage during fast charging, VOOC/Warp Charge/Dart Charge use a higher current than standard USB charging.
All versions of VOOC require a proprietary cable to work. In addition to electrical requirements like thickness (low electrical resistance) to handle the high currents without overheating, the VOOC 2.0/Dash protocol requires a fifth pin on the (USB-A to USB-C) cable to communicate through. Without such communication, the charger runs at a limit of 5 V/1.5 A. From VOOC 4.0 this limit elevated to 5V/2.0A.
On the Android phone end, the VOOC communication code is open source under GNU General Public License (GNU GPL) version 2 as a part of the modified Linux kernel, and has been used by custom ROMs like Lineage OS.
So i presume it's just not compatible with many PD chargers.
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Click to collapse
I don't understand why it can't be compatible with many PD chargers if PD is a standard. What would be the discrimination factor here?
I tried charging the Pixel 6 that supports PD with every PD charger I have and they all deliver 23W, while on the OP8T all stuck on 5W or even less sometimes.