Develop Bugs

Wall charger vs USB charger

Hi,
I have noticed my phone charges much quicker via the USB on my PC. It takes about 2 hours to charge fully, while the wall charger takes 3-5 hours to charge like 40% or something.
The specifications for the wall charger are:
INPUT: 100-240V ~ 50/60Hz 0.2A
OUTPUT: 5.1V=== 850mA
I do'nt know what the specs for my USB port are? Can I check it in the BIOS? I have googled and found it's something around 5V 500mA, so technically my phone would charge slower...
This is how the wall charger looks like (you can unplug the USB-cable and use it on the PC since it's not a standard USB-mini connection).
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Thanks for any feedback.
EDIT:
(moved a post to this thread)
Cocide said:
Well the 500mA is the minimum spec for USB, basically they say its at least 500mA so that manufactures know how much power to expect and can design devices to run at that amount of power or less. That being said, USB can be anything above 499mA, I have seen a laptop put out 2000mA before even. So yes it is quite possible that your computer could put out over the 850mA of your charger. It probably won't say what its capable of delivering in your BIOS, if you really want to know you could try to find the specs for your computer/mobo/usb chipset. All that being said, you could always get a different USB wall adapter if you wanted to charge faster w/o a computer, just because it came with the one you currently use doesn't mean you have to use it (it is just a powered USB port after all).
Click to expand...
Click to collapse

Seems like your wall charger is defective, normally It takes about 1.5-2 hours for working wall charger to make the job done.
Standard PC USB port output is 5v==500mA, so it's strange that you can fully charge 1140 mAh battery just in 2 hours.

G1-Amateur said:
Hi,
I have noticed my phone charges much quicker via the USB on my PC. It takes about 2 hours to charge fully, while the wall charger takes 3-5 hours to charge like 40% or something.
The specifications for the wall charger are:
INPUT: 100-240V ~ 50/60Hz 0.2A
OUTPUT: 5.1V=== 850mA
I do'nt know what the specs for my USB port are? Can I check it in the BIOS? I have googled and found it's something around 5V 500mA, so technically my phone would charge slower...
This is how the wall charger looks like (you can unplug the USB-cable and use it on the PC since it's not a standard USB-mini connection).
Thanks for any feedback.
Click to expand...
Click to collapse
USB spec calls for 5V, 500mA max output (it's often less - reason is that it's 500mA per hub and in must configurations multiple ports share a single hub internally so multiple devices all plugged in at the same time will share the 500mA).
Your charger should charge in about half the time of your PC USB. Your wall charger must be defective.

richb500 said:
USB spec calls for 5V, 500mA max output (it's often less - reason is that it's 500mA per hub and in must configurations multiple ports share a single hub internally so multiple devices all plugged in at the same time will share the 500mA).
Click to expand...
Click to collapse
Actually you got that backwards, its 500mA minimum. Check the docs if you do not believe me. And before you quote it, yes I do know that wiki says "A maximum of 5 unit loads (500 mA) can be drawn from a port in USB 2.0" that is because they are talking about the maximum that you are guarantied to receive as a USB device. You really need to read both sides of the documentation for this one, the USB protocol documentation for the computer side says it will provide 500mA minimum, and for the device side they say draw 500mA maximum. That way manufactures know that they can draw 500mA maximum to fully power the device because they are guaranteeing that they will be given at least that amount or more. Often times ports will actually put out more because manufactures are aware that devices charge over USB, and of course you can have ports that do deliver less because of some extenuating circumstance.
Granted that is all per port (and internal USB bus is not the same as a USB hub, they often provide full power per port), if you have a hub you are using it can be less, but you can not assume its a hub.
Long story short, if it has the USB sticker on it it puts out at least 500mA all the way up to whatever the manufactures prerogative was.

Wall charger charges much faster in my case. Just a little more than 1 hour.
The charging time is depend on the charging current. Wall charger is around 850-1000ma, usb is below 500ma (for some bad PC, it could be as low as 200ma). The capacity of the flipout battery could be 1130mah. 1130/1000 = 1.13 hour full charge time.

+1.5A Dual Android wall charger?

I recently picked up an Anker dual car charger (link). It has two ports labeled Apple, the other Android. Both ports can supply 2.4A, for a total of 4.8A.
When I charge my phone from the Android side I get very close to 1A, but when I use the Apple side that goes down to around 500mA. To note, I used the same cable and only one port was used while testing. I used Battery Monitor Widget to track the charge rates.
Either side is strong enough to charge our phones, but it would be great if they both charges at full charge rates. So now I am looking for a wall charger and ideally I would like a dual port charger that can charge two Android devices at over 1.5A. I know we can't use 1.5A but it will future proof the chargers for a while, or will work with tablets.

SykesAT said:
I recently picked up an Anker dual car charger (link). It has two ports labeled Apple, the other Android. Both ports can supply 2.4A, for a total of 4.8A.
When I charge my phone from the Android side I get very close to 1A, but when I use the Apple side that goes down to around 500mA. To note, I used the same cable and only one port was used while testing. I used Battery Monitor Widget to track the charge rates.
Either side is strong enough to charge our phones, but it would be great if they both charges at full charge rates. So now I am looking for a wall charger and ideally I would like a dual port charger that can charge two Android devices at over 1.5A. I know we can't use 1.5A but it will future proof the chargers for a while, or will work with tablets.
Click to expand...
Click to collapse
Maybe look at getting a powered USB hub? I know the 2 I have at home can supply more than the 500mA USB2 spec as they've back powered my raspberry pi with a hdd attached before.

from my limited research, apple and android phones use different methods for signaling AC charging.
Android phones like to have the data pins in the USB cable shorted to each other to signal the phone for AC fast charging.
Not sure what Apple does, but it's not the same. That's why there are two different ports on the charger. Android ports have the data pins shorted together.
On a side note, you can also buy "charging only" cables on amazon that do the data pin shorting inside the cable. this may let you use your android phone with the apple labeled USB ports.

ez12a said:
from my limited research, apple and android phones use different methods for signaling AC charging.
Click to expand...
Click to collapse
This is correct. Apple devices want to see some combination of 2V and 2.8V on the data +/- lines to signal wall adapter charging. They do it this way because it allows the charger to tell the device what amperage it's capable of delivering (500mA, 1A or 2A) which is pretty cool.

It's been my impression that even using an charging only cable/adapter an Apple charging port will only give you 500 mA.
For what it's worth I recently emailed Anker about this and they said as much. I don't have an appropriate cable or charger to test it on. But Anker also told me they will be releasing new chargers in December that feature their smart charging port which detects what type of device you've attached (Apple, Samsung or generic Android) and then behaves accordingly. I just ordered one of their external battery packs (Astro3) which has one of these ports for 2.1A plus 2 x 1.5A Android ports. A similar AC charger would be nice if you can wait.

tmagritte said:
It's been my impression that even using an charging only cable/adapter an Apple charging port will only give you 500 mA.
For what it's worth I recently emailed Anker about this and they said as much. I don't have an appropriate cable or charger to test it on. But Anker also told me they will be releasing new chargers in December that feature their smart charging port which detects what type of device you've attached (Apple, Samsung or generic Android) and then behaves accordingly. I just ordered one of their external battery packs (Astro3) which has one of these ports for 2.1A plus 2 x 1.5A Android ports. A similar AC charger would be nice if you can wait.
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That is great to know. I can live with what I have until they release that charger. thanks.

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http://pages.ebay.com/link/?nav=item.view&id=111292550874
Pretty good deal, imo. Just arriwed, will share my experiences.
Nexus5 X Tapatalk Pro

[Q] Charger issue.

I bought a Galaxy Tab S 10.5 when I was in Europe but now that I'm back home I can't use the charger cause they're different than what we use here. Do I have to buy a new one or is there any chance I can use my Galaxy S4's charger? I understand the chargers have some sort of voltage information I don't know if my phone's charger will work since the batteries are not the same. Thanks for your time.
Here's a picture with both chargers. Left is the Galaxy Tab S's. Right is my phone's. They appear to have the same values, I still ask because I noticed its taking a long time for the tab to charge.
http://i.imgur.com/rqxBFHH.jpg

Maybe not the exact answer your waiting for but anyhow.
There is a lot of talk about cables and chargers not working properly. So I installed Galaxy Charging Current (Play store) and checked all my chargers and cables.
First off all my cables worked fine, but thats not what your asking.
Install the app on your tab and check with what value its charging.
Then you know for sure if you can use the charger on the right. (Or buy a europe tot US adapter for your 5.3 volt charger)
(I charge my phone wit the tab charger and have no problem)

I bought this little usb amp/volt meter and checked all my chargers and cords. Maybe 10% of them were junk. Some actually put out 5.3 volts like the stock charger. They all put out different amps. Some below 1.

Hans,
I downloaded that app. I dont know what I'm looking for. Here is a screenshot. Can you tell me what the readings mean and if I'm within the norms? Thank you!
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Here is another reading a few minutes later as it warmed up..
and lastly, ten minutes later, as the charger is now fully hot..

This app is useless. Its readings have nothing to do with real current from charger. I have PortaPow USB Power Monitor and it clearly shows that Tab S 10.5 takes 1.75A from oem charger and this app shows values between 1 and 1.2A.

SotYPL said:
This app is useless. Its readings have nothing to do with real current from charger. I have PortaPow USB Power Monitor and it clearly shows that Tab S 10.5 takes 1.75A from oem charger and this app shows values between 1 and 1.2A.
Click to expand...
Click to collapse
I dont know if its useless but when T700 is connected to my pc it show 476 mA , connected to my original charger it shows 1800 mA and connected to my 1 amp phone charger it shows 745 mA.
The values that I expected.
From the makers site I learned only Maximum value is important.

Where the USB plugs into the tablet to charge. Is it suppose to get really warm?

HANSB57 said:
I dont know if its useless but when T700 is connected to my pc it show 476 mA , connected to my original charger it shows 1800 mA and connected to my 1 amp phone charger it shows 745 mA.
The values that I expected.
From the makers site I learned only Maximum value is important.
Click to expand...
Click to collapse
It shows what your tablet should take from the charger not what it is actually taking. So if you connect it to 2A charger it will show 1.8A because that's maximum value Samsung designed Tab S to be charging at. I did lot o testing and this app will always show 1800mA maximum when tablet is actually taking much less current for example when connected with long cable (15ft). My testing shows that longest cable I can use is 10ft 28/24AWG from Monoprice and oem charger. 15ft cable is only charging at 1.2A and any cable longer than 3ft is unusable with Anker 40W IQ charger. OEM Samsung charger gives 5.45V not ~5V as any other USB charger.

Question about the charger included in the box

As I've seen in some early reviews, the charger included in the box has a USB-A female while the charger included has a male USB-C output in both sides, so the question is: How the h*** do I charge my device with the included adapter?

The cable that comes with the phone is USB-A (male) to USB-C (male)
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This adapter (Micro USB female>USB-C male) comes with the phone. It'll allow you to use your existing micro USB cables. It definitely won't support 25W USB-C fast charging speeds, you'll need a proper and supported USB-C cable for that. I'd guess it'll support standard (last year's) fast charging though.

At some point, the idea of USB -C is to have the "C" connector at both ends, and eliminate the "A" on one end. However, they clearly have not moved in that direction yet.
This would make USB -c omnidirectional in every direction. No wall side/device side and no up and down.

boufa said:
At some point, the idea of USB -C is to have the "C" connector at both ends, and eliminate the "A" on one end. However, they clearly have not moved in that direction yet.
This would make USB -c omnidirectional in every direction. No wall side/device side and no up and down.
Click to expand...
Click to collapse
It seems like C on both ends is the proper way to migrate over, on the other hand buying A to C cables lets me re-use my wall plugs. Either way it's going to be a mess while my tablet and external battery pack are micro USB and my phone is USB C. What's everyone else planning on doing?

bishmaster5000 said:
It seems like C on both ends is the proper way to migrate over, on the other hand buying A to C cables lets me re-use my wall plugs. Either way it's going to be a mess while my tablet and external battery pack are micro USB and my phone is USB C. What's everyone else planning on doing?
Click to expand...
Click to collapse
Qi Wireless fast charging is the way to go. Overnight I'll use the Wireless Charging Cradle and in the car I'll use the usb C cable to QC 2.0 Car charger. On the go I'll bring the OEM wall charger and cable. If need be maybe invest in a USB C External Battery Quick Charger.

bishmaster5000 said:
It seems like C on both ends is the proper way to migrate over, on the other hand buying A to C cables lets me re-use my wall plugs. Either way it's going to be a mess while my tablet and external battery pack are micro USB and my phone is USB C. What's everyone else planning on doing?
Click to expand...
Click to collapse
For wireless charging which I use heavily, nothing. The Note7 will fast charge wirelessly at the same rate as the Note5. I ordered a 1' A>C Orange-E (they're 100% spec compliant) cable to use in my car for Android Auto. When the price drops I'll order a second Samsung OEM adaptive charger and Type C cable which I'll use in the office when I need faster charging than I can get through wireless. I'll use what comes in the box at home and when I travel. The latter is most important to me because that's where 25W charging matters most. A4C.com has the OEM Samsung 10,500 mAh fast charging brick on sale for $29.95 so I ordered one and that'll charge at 2A, last year's fast charging standard. I connect wirelessly 90% of the time for data transfer so Type C doesn't offer a lot of benefit on the data side for me so no need to "cable up." With the adapter that comes with the phone all existing micro USB cables will work fine. The only thing the adapter inhibits is 25W charging speeds. YMMV.

Is the Charge in Box QC Usb 3.0 or 2.0 ?

ilordvader said:
Is the Charge in Box QC Usb 3.0 or 2.0 ?
Click to expand...
Click to collapse
It will most probably be the same Adaptive Fast Charger we've seen before.

S8/S8+ Power Delivery compatible chargers

When I plugged the S8+ into the MacBook 12's PD brick, it shows "cable charging". I thought the S8+ doesn't support PD. Today when I tried to use it with the rMBP USB-C PD brick, it activated Fast Charge. So the S8+ supports PD after all.
My USB-C 5V/3A portable battery and the Pixel XL / 6P bricks can't activate fast charge either.
If you know any other PD chargers that works with the S8/S8+, please share.
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I can confirm that this Aukey USB C Car Charger with Power Delivery works. I got this for the wife's car for her Pixel, but my S8+ also comes up as fast charging when I connect it.
This reddit post implies that in addition to the QC 2.0 fast charging (and since QC3 and 4 are backwards compatible any QC charger will work) it can also negotiate 5V at 3A over USB-PD, however (non-PD) Type-C USB charging can provide 5V @ 3A so it's more likely it's using that rather than USB-PD per se (though for all intents and purposes the end result is the same with regards S8+ fast charging) as long as the charger provides it.

Ive read that qualcomm 2.0 os basically 3 amps. So in theory any charger that provides 3amp output should work as fast charge

Nice find, thanks for the heads up (and a shame I don't seem to be able to find this one in the UK).
Do bear in mind the phone will draw a maximum 15W (either 9V @ 1.67A over QC2 or 5V @ 3A over USB Type C) even if the charger can provide more.

I assure you that the Flux Charger would be the best portable charger for your S8/S8+. One of my friends uses it for charging on the go. Also it provides fast charging.

How does this differ than Anker QC3 , other than type C;
https://www.amazon.com/dp/B01K9MQ8WW?psc=1

picrthis said:
Thanks for the info, I must admit I don't know much about PD
Click to expand...
Click to collapse
The Wikipedia article on USB, particularly the power section, is worth reading.

Incarniac said:
The Wikipedia article on USB, particularly the power section, is worth reading.
Click to expand...
Click to collapse
So it would seem with my S8+ and the Anker charger I gave the link to, there would be no real advantage switching to this one.........Anker chargers have been my go-to chargers for years, but I always keep an open eye to others

picrthis said:
So it would seem with my S8+ and the Anker charger I gave the link to, there would be no real advantage switching to this one.........Anker chargers have been my go-to chargers for years, but I always keep an open eye to others
Click to expand...
Click to collapse
Yeah, for the S8/S8+ it make no difference in terms of charging:
Incarniac said:
Do bear in mind the phone will draw a maximum 15W (either 9V @ 1.67A over QC2 or 5V @ 3A over USB Type C) even if the charger can provide more.
Click to expand...
Click to collapse
The phone doesn't actually use USB-PD either, but can fast charge using USB Type C, but it's often USB-PD chargers that gives that. USB-PD is more future proof for other devices, but right now there's no need to change your existing QuickCharge chargers or powerbricks.

djhulk2 said:
Ive read that qualcomm 2.0 os basically 3 amps. So in theory any charger that provides 3amp output should work as fast charge
Click to expand...
Click to collapse
Not exactly. With QC 2.0 the power supply can output 5, 9 or 12 volts, the phone will tell it what to output based on the battery level.. so if it's about completely dead it'll ask for 12 volts and as it gets closer to full back off to 5 volts. You need a power adapter that's compliant for that to work.

I received the Trianium charger over the weekend, it does fast charge off the USB-C port. One odd thing I've notice though is if I put my phone in my car mount while the charger has power, it goes into cable charge mode. Unplug and plug the other end back into the charger and it's in quick charge mode. Now if I put the phone in the mount before the charger gets power it works fine.

I recently got myself the AUKEY 27W Dual USB-C Port Car Charger. This is a USB Type C charger (and does not support USB Power Delivery) and with the built-in/attached USB-C cable it fast-charges my S8+ with the 5V at 3A that USB Type C allows for. The other port is a (non-USB-C and non-QuickCharge) USB charging port that can provide up to 2.4A.