Can i charge my usb C phone with my usb C laptop charger?

[WorriedPotato]

This is probably a stupid question, but im wondering if i could use my laptop charger to charge my phone.

They both use Usb type C but i don't know anything about volts and all the electricity related stuff so that's why I'm asking. 

Laptop: razer blade stealth 

Phone: Oneplus 3 

 

Thanks in advance!

[matrix07012]

No. Mostlikely.

[zMeul]

that was the whole idea behind USB type C

theoretically you could, practically .. you're playing with fire

[fredih]

Well, theoretically Yes. BUT:

Some manugacturers use the connector type and use different voltages.. Look at the label on the laptop charger and search for something like 5V or 7.2V.

If it is 5V and 3A or 5A it should be totally fine. if it is something like 9V and 5A, you should not charge your fhone with it.

 

Ok I just looked it up.. Do not charge you phone wit hthe Razer Blade stealth charger (45W model).. It's got 20V output voltage.. That'll fry your phone..

[fredih]

Take a look at this..

[tlink]

54 minutes ago, fredih said:

Take a look at this..

you can and its probably safe IF the oneplus 3 and razer charger follows usb c spec to the letter. usb c chips should be able to handle it since the specifications for charging are universal and not optional like thunderbolt. you can charge a nexus 6p and the google pixel with that brick without problems. the brick can simply turn down the voltage as usb c power delivery specifications require

 

Quote

 

With the laptops taken care of, we took a closer look at the Nexus 6P, plugging it into each of the laptops using the stock USB-C cable to see what would happen. (The laptops were powered on and running on battery.) In all cases, the phone charged, but as we discovered with the power bricks, the Nexus 6P’s charge rate varied. On the Spectre X2 and the MacBook 12, the Nexus 6P charged at its presumably higher “Charging rapidly” rate. On the Google Chromebook Pixel, however, the Nexus 6P reported “Charging slowly,” which suggests a step down from just “Charging.”

Oddly, when plugged into Google’s new Pixel over a standard USB-C cable, the Google Nexus 6P charged at its slowest rate.

The discrepancies between the Nexus 6P’s charging rate with the power bricks versus the standard cable is likely due to how much power the USB-C ports on the devices put out versus how much the power bricks put out. If you’re curious about the voltage and amperage of the various bricks, see the chart below. 

Not all USB Type-C chargers are the same

Ever since Google’s new Chromebook Pixel came out, I’ve wondered what would happen if you plugged a separate USB-C charger into each of its USB-C ports. Like the Spectre X2, the Pixel can be charged from either port. I plugged the MacBook’s charger into the left port and the Pixel's charger into the right port.

Nothing caught on fire (darn!), but the Pixel is smart enough that you can pull a charger from either port and it won’t skip a beat. I could, for example, unplug the Pixel charger and have it run on the MacBook charger, and then plug the Pixel charger back in and unplug the MacBook charger, without interruption.

HP mentioned that one of the issues still being worked out is how the spec responds when you connect one laptop’s USB-C port to another’s. In theory, the Power Delivery spec allows you to charge a friend’s laptop from yours, just as if you were jump-starting someone’s car.  

Gordon Mah Ung

USB-C’s Power Delivery mode should allow the Google Pixel to charge the Apple MacBook 12.

To put that to the test, I took the Google Pixel with its battery at 100 percent and plugged it into the MacBook 12 at 61 percent. The charging icon on the MacBook changed, but its battery continued to discharge, and the OS indicated that it wasn’t charging at all.

Gordon Mah Ung

The lightning bolt suggests that the Google Pixel is charging the MacBook 12, but the latter started out with 61 percent battery.

Conclusion

I have no doubt that universal charging for laptops will be a reality one day on laptops, but right now it’s pretty messy. Whether that’s because vendors are “waiting” for the new USB Power Delivery 3.0 spec or they still have warehouses of power bricks to purge, I don’t know.

When I started this project with three laptops, I was far more optimistic that it would “just work.” Since I’ve added two more laptops to the mix, it’s become clear to me that a lot more has to happen first.

The most embarrassing aspect for PC fans is it’s the OEMs who seem to be be in the most disagreement, while Apple, Google, and Huawei are more accepting. To be fair to PC OEMs, they make the most laptops. Apple and Google’s MacBook 12 and Pixel units moved probably don’t add up to 1 percent of what Dell and HP ship in a month, so there’s simply less interoperability to worry about.

http://www.pcworld.com/article/3017182/hardware/usb-c-charging-universal-or-bust-we-plug-in-every-device-we-have-to-chase-the-dream.html

 

usb c power delivery spec testing mandatory by the usb concernum

Quote

2.5

Over Current Test

A.

Purpose:

1.

The

Over Current

Test verifies that

the PD Source port follows the overcurrent

requirements.

2.

This test is required for any PD source

-

capable port.

B.

Asserts Covered:

1.

7.1.8.3#1

2.

7.1.8.3#2

C.

Test Procedure:

1.

T

he

SPT

attaches all ports and utilizes a Sink Capability of 5V

, 0A.

2.

For each port with which the

SPT

establishes a PD contract:

a.

The SPT r

equest

s

the

max current for

the negotiated source PDO

b.

T

he

SPT

applies

the negotiated current

load to the port

in

25% increments

c.

The SPT increases the load by 100mA

d.

If a hard reset is detected

, t

he SPT verifies

:

1.

T

he voltage transition below vSrcValid min

occur

s

within tSrcOcPresent

after the load was

increased.

2.

After transition below vSrcValid, t

he voltage decreases monotonically

toward vSafe0V

e.

Else

if the load

=<

5.5A,

Repeat step

C.2.c

c

.

f.

Disable the load

g.

The SPT informs the user of the value at which the over current condition

triggered or the maximum current applied if it did not trigger.

h.

Repeat step

C.2.a

for t

he next

advertised

Source Capability PDO

until no more

exist

http://www.usb.org/developers/compliance/usbcpd_testing/USB-C_Source_Power_Test_Specification_2015_12_30.pdf

 

[tlink]

if you want to know for sure ask oneplus reps if the oneplus 3 follows voltage negotiation specification so it doesn't fry itself.

[fredih]

2 minutes ago, tlink said:

usb c chips should be able to handle it since the specifications for charging are universal and not optional like thunderbolt. you can charge a nexus 6p and the google pixel with that brick without problems. the brick can simply turn down the voltage as usb c power delivery specifications require

 

1 minute ago, tlink said:

if you want to know for sure ask oneplus reps if the oneplus 3 follows voltage negotiation specification so it doesn't fry itself.

Wow kudos to you my friend..  Looks like you spent some time researching that.. Ok I already knew the thing with limiting voltage when charging via USB C, but yeah.. It depends on if the hardware behind the ports is up to standards.. You never know if you never try  just kidding.. I'd contact the supoort as well.. but why not simply get a cheap usb c cable for charging and just plug it into some other USB charger? Seems safer and less time consuming to me.. If you're willing to apend $3 or so..

[tlink]

4 minutes ago, fredih said:

 

Wow kudos to you my friend..  Looks like you spent some time researching that.. Ok I already knew the thing with limiting voltage when charging via USB C, but yeah.. It depends on if the hardware behind the ports is up to standards.. You never know if you never try  just kidding.. I'd contact the supoort as well.. but why not simply get a cheap usb c cable for charging and just plug it into some other USB charger? Seems safer and less time consuming to me.. If you're willing to apend $3 or so..

depends on if its a conversion cable to usb A or B. if its a conversion cable than it should really have the appropriate resistance on the cable since it can destroy whatever is on the A or B end. cheap usb c cables might also catch fire when using OPPO's quick charge or whatever its called. but yea usb c to usb c cables are less of a hassle but i would still buy from a reputable seller. now days they are more important than usb a or b where because usb c can deliver way more power which can cause a house fire if its not up to spec. usb a or b won't do that as quickly. buying real cheap usb c cables is becoming like buying a cheap power supply for a computer, its not a great idea. i think oneplus sells oneplus 3 usb c cables for 15 bucks or so which is worth the money imo if it negates the risks.

 

and yea i quite like usb c but the specifications are such a mess with all the optional crap. nobody knows what will work and what won't work. they really should start slapping company's their wrist when they are not up to spec. they should require them to independently validate if products are up to spec so consumers don't have to deal with this mess.

 

https://oneplus.net/dash-type-c-cable

[Zeokon]

If the Oneplus 3 is USB-C compliant, which it is from what I read, it should work since the Razer Blade Stealth's charger was tested to be USB-C PD compliant, even though it states 20v and 2.25amps on the charger/site it can do lower than that.

 

https://gtrusted.com/review/71988

[xperia4764276]

Well I'm charging my Xperia XZ Premium with my MacBook Pro touchbar charger right now. It's slower than the phone's quick charge 3 charger. but it works!! absolutely safe

[Machan2k6]

charged one plus two with dell d6000 dock. all well

[LienusLateTips]

21 hours ago, Machan2k6 said:

charged one plus two with dell d6000 dock. all well

This is from 1.5 years ago

[NextMarcus]

If smartphones and laptops both have the same connector type, manufacturers need to expect users to use them interchangeably. I guess smartphones just either block away 20 V or something happens with USB-PD and no power flows.

 

A solution for rounded DC connectors is: Some car USB chargers support 12 to 24 V, laptops have 19V to 20V.

You can connect the aluminium to the car chargers (+ midle to + tip) and - outer to - outer.

 

No reverse polarity that could break things.

[Shally]

Since this is the first post you see when you google the related question, I'll put this here:
I'm charging my S9 with my lenovo ideapad charger and it charges at a seemingly standard rate.

[Radioactive Snowman]

If it's the same connector people are going to do it so they would have prepared for it. MKBHD uses a MacBook charger for his phone and had 0 issues

[NextMarcus]

On 29.8.2018 at 11:25 PM, KendoSapion said:

I'm charging my S9 with my lenovo ideapad charger and it charges at a seemingly standard rate.

• Does the IdeaPad charger support USB-PD?
• Or does the S9 support 20V power input?
• Does it heat up?
• What does the label of the IdeaPad charger say?

 

My friend's Galaxy S7 did refuse to charge starting at 10 V (tested using laboratory power supply).

[Shally]

2 hours ago, NextMarcus said:

• Does the IdeaPad charger support USB-PD?
• Or does the S9 support 20V power input?
• Does it heat up?
• What does the label of the IdeaPad charger say?

 

My friend's Galaxy S7 did refuse to charge starting at 10 V (tested using laboratory power supply).

I can't answer all of these while I'm at work but no it didn't heat up. I just randomly thought I'd check and was pleasantly surprised 

[Jasongreat]

I've actually been watching this thread for awhile and can say I have safely charged my s8+ with no problems with the 45 watt stealth charger.

This site says that "The Razer Blade Stealth power adapter offers 5 volts @ 3 amps (15 watts), 12 volts @ 3 amps (36 watts), and 20 volts @ 2.25 amps (45 watts) power options"  
https://gtrusted.com/how-the-razer-blade-stealth-charges-with-its-power-adapter-using-usb-power-delivery
 

[NextMarcus]

On 24.9.2018 at 6:36 PM, Jasongreat said:

This site says that "The Razer Blade Stealth power adapter offers 5 volts @ 3 amps (15 watts), 12 volts @ 3 amps (36 watts), and 20 volts @ 2.25 amps (45 watts) power options"  

Did the S8+ use 12V or 5V?

Did it charge as quickly as using the original Samsung charger (which used Qualcomm's Quick Charge 2.0 negotiation standard, 9V 1.67A)?

[peacefulpolarbear]

I’d think it would be fine. I was under the impression that the phone is smart enough to determine how much power it can take, so using an overpowered charger wouldn’t be an issue. 

 

I know you can use a MacBook Pro charger on a MacBook Air without issue (which is rated for ~double the power output of the air charger). Worst case scenario the phone doesn’t charge.

[Dactar]

I recently came across this thread, looks like Samsung Galaxy S9 CAN be safely charged with these high Voltage and high Wattage USB C. Here is an interesting read: http://www.chargerlab.com/archives/447.html

[plalle]

You can. Seriously, I know its iold, but why is it ranked so high in searches when is full of bulshit.

[Kaauan]

The output of my lenovo charger says: 
5V/2A, 9V/2A, 15V/3A or 20V/2.25A
 
Does that mean it fits into a smartphone (huawei p20 pro) with input is 5V - 2A?
 

Thanks! 

[lapwat]

On 6/14/2019 at 3:28 PM, Kaauan said:

The output of my lenovo charger says: 
5V/2A, 9V/2A, 15V/3A or 20V/2.25A
 
Does that mean it fits into a smartphone (huawei p20 pro) with input is 5V - 2A?
 

Thanks! 

+1 I have a multi output power laptop charger (Xiaomi Mi Notebook Pro 65W). Can I charge my Xiaomi Redmi K20 Pro which is normally charged with its included 27W charger ?