Develop Bugs

USB charging and amperage??

What is the voltage and amps on the charger that came with Epic? I've got a bunch of charges around that are usually around 5V and .5A.
Just trying to lighten the load when I travel. Noticed the nook color charger: 5V, 1.9 A, and Kindle Charger 4.9V, .85 Amps. The one I'm on now is a Samsung 5V, .7 Amps.
What is the effect of using different rated charging on the Epic. Would the .85 Amp charger charge faster? Or too fast and cause damage?
Just wondering....

akenis said:
What is the voltage and amps on the charger that came with Epic? I've got a bunch of charges around that are usually around 5V and .5A.
Just trying to lighten the load when I travel. Noticed the nook color charger: 5V, 1.9 A, and Kindle Charger 4.9V, .85 Amps. The one I'm on now is a Samsung 5V, .7 Amps.
What is the effect of using different rated charging on the Epic. Would the .85 Amp charger charge faster? Or too fast and cause damage?
Just wondering....
Click to expand...
Click to collapse
could cause a potential over heat of battery

akenis said:
What is the effect of using different rated charging on the Epic.
Click to expand...
Click to collapse
USB operates at 5V, and any charger with a USB "type A" receptacle will output at 5V. Furthermore, it's safe to use the Epic with any USB-based charger.
Now, the problem is that the Epic will not draw more than 0.5 A from a USB port that isn't wired to the USB Battery Charging specification, so using a charger with a higher current rating will not charge faster if it doesn't meet that specification. Many chargers do, however, Apple uses an incompatible specification, so any iPhone/iPod-compatible, high current charger is of limited use on the Epic.
I've found that when you plug the Epic in, if the LED turns red and there's no "Select USB mode" menu, then the charger is properly compatible. If you do get a "Select USB mode" menu, then current draw is limited to 0.5 A and it will charge more slowly.
akenis said:
Would the .85 Amp charger charge faster?
Click to expand...
Click to collapse
The Epic itself appears to max out around 0.7 A, so the 0.85 A charger is unlikely to charge appreciably faster than the Samsung OEM charger. Assuming it follows the USB Battery Charging spec, it shouldn't be any slower either.
akenis said:
Or too fast and cause damage?
Click to expand...
Click to collapse
The charge current is actually phone dependent--the phone itself will never draw too much current and cause damage to the phone. Furthermore, the USB Battery Charging spec requires that phones (and other USB devices) implement sensing circuity to avoid overloading a charger.
In short, one of the design goals of USB is that, if you can physically plug a device into a receptacle, then it should do something reasonble, if not optimal, and never cause damage.

Yeah I've used my 1A chargers from my old Hero and they don't seem to charge any faster, nor overheat the battery than any extra than the standard charger.
Charging off USB sucks though (from a computer) 500mA is noticably slower than 700mA. I wish there was an app or mod to allow it to draw 700mA from a computer's USB port. I know USB 3.0 is safely able to supply 900mA so I'm curious if the device is configured to allow this. (unfortunately I do not currently have any computer with USB 3.0 but it's still something I'm interested in)
My old HTC TouchPro had a mod to allow full speed (I guess 1A charging) from the 5V port on my laptop and desktop. It never hurt my usb controller on either of them and they still work fine to this day. I swear I heard that USB 2.0 can unofficially support 900mA as well, which explains why my ports never burnt out from my TouchPro's added load

tazfanatic said:
could cause a potential over heat of battery
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And then this would happen:
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Totally kidding

No problems here using the 2A nook charger, 1A iphone charger or 700mA blackberry charger. As long as the charger is 700mA or better it'll fast charge. No such thing as too much amperage, the device will only draw what it needs. In the case of 500 mA, it'll slow charge. Any less than that and it's hit and miss, but probably won't charge at all.

insanity213 said:
No problems here using the 2A nook charger, 1A iphone charger or 700mA blackberry charger. As long as the charger is 700mA or better it'll fast charge. No such thing as too much amperage, the device will only draw what it needs. In the case of 500 mA, it'll slow charge. Any less than that and it's hit and miss, but probably won't charge at all.
Click to expand...
Click to collapse
Interesting.... tried the nook color charger and it doesn't fit. Looks kinda the same, but it's not. NC people said that device would not charge from computer USB.
Sent from my SPH-D700 using XDA Premium App

If you have a device that only pulls .8 amps and you hook it up to a 2 amp charger....guess how many amps it is going to pull? You guessed .8 amps. Woohoo!
Kinda like how your circuit for your bedroom is a 20 amp circuit. Does you alarm clock pull 20 amps now?

akenis said:
Interesting.... tried the nook color charger and it doesn't fit. Looks kinda the same, but it's not. NC people said that device would not charge from computer USB.
Sent from my SPH-D700 using XDA Premium App
Click to expand...
Click to collapse
I use the nook power brick with a standard microusb cable - like the stock epic one or a crackberry cable. The nook cable is different, but the USB port on the charger itself is standard.
And yes, the nook won't charge off of a PC. PC USB ports only deliver 500mA and the nook wants more.

+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.
Click to expand...
Click to collapse
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

Rapidly charging via 9V 1.8A charger

Hello! I've bought LG's MCS-H05EP travel adapter (like this one http://www.ebay.co.uk/itm/Genuine-LG-MCS-H05ER-MCS-H05EP-1-8Amp-White-USB-Mains-Charging-Adapter-EU-/331938303153) which is sold with USB A to USB Type-C cable. On the adapter it is written 9V at 1.8A or 5V at 1.8A. The stock adapter goes for 5V at 3A which activates the rapid charging. So, I was quite surprised that the rapid charging also gets activated (and the device charges as fast as it does with the stock adapter) using the MCS-H05EP travel adapter. Here https://support.google.com/nexus/answer/6102350?hl=en it is said that "The input voltage range between the wall outlet and this charger is AC 100V–240V, and the charger’s output voltage is DC 5V, 3A." So, I'm kinda concerned whether the [email protected] output from the custom adapter could damage the battery.
What you think, guys?

afaik, the 5x cannot accept 9v as it can only accept maximum of 5v?

Maybe the adapter is also capable of [email protected] (15W even less that 16,2W when its [email protected]), but they did not write it on the adapter for some reason

Pretty sure you'll only get the 5V and 1.8A with the type A to C cable since the 5X can't handle the 16.2 watts (9V x 1.8A).
Sent from my Nexus 5X using Tapatalk

Oversemper said:
What you think, guys?
Click to expand...
Click to collapse
It'll say charging rapidly, but my experience is it will say that if it is charging 1.6A at 5V. If you are in the range of 40% to 80% battery it will seem similar to the 1.8A that stock charger will charge at.
However if you are on the 0-40% battery range, stock charger will charge at 2.6A and your charger will likely still be at 1.6A. You'll notice a bigger difference in that range.
This is all at 5V. 5x doesn't do 9V.

sfhub said:
It'll say charging rapidly, but my experience is it will say that if it is charging 1.6A at 5V. If you are in the range of 40% to 80% battery it will seem similar to the 1.8A that stock charger will charge at.
However if you are on the 0-40% battery range, stock charger will charge at 2.6A and your charger will likely still be at 1.6A. You'll notice a bigger difference in that range.
This is all at 5V. 5x doesn't do 9V.
Click to expand...
Click to collapse
Wrong))
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UPDATE:
So it was 19% at 17:58 and at 19:01 it is 70%. Looks pretty rapid for me.

Oversemper said:
Wrong))
View attachment 3861653
View attachment 3861654
UPDATE:
View attachment 3861727
So it was 19% at 17:58 and at 19:01 it is 70%. Looks pretty rapid for me.
Click to expand...
Click to collapse
If you want to say "wrong" then you should post 0-100% charge times using original charger then post 0-100% using your new charger. Preferably you should post the log file of charging rates for both tests.
The actual test you want to perform is 0-40% using original charger, then 0-40% using the new charger. This will have the most noticeable difference between "Charging rapidly" on the original charger on "Charging rapidly" on the USB A to C charger.
In this battery range, original USB C charger will do 2.6A (around 24min to charge 0-40%)
Your new USB A to USB C charger will do around 1.6A (around 40min to charge 0-40%)
From 40%-80% original will do around 1.8A (around 36min to charge 40-80%)
Your new USB A to USB C charger will do around 1.6A (around 40min to charge 40-80%)
From 80-100% they both charge around the same rate.
So we are talking around 20min difference from 0-100% but 16min of that difference happens from 0-40%. Many people would consider this "fast enough", especially since "not" "Charging rapidly" means you are charging at .5A which is roughly 1/3 the rate (3x longer than USB A to C "Charging rapidly" in the 40-80% range)
"Charging rapidly" using USB A to C is obviously "faster" than not "Charging rapidly", however it isn't as fast as "Charging rapidly" using the original charger, especially in the 0-40% range, but less so in the 40-80% range.
Since you are saying I am "wrong" you should post your log files of the charging rates for the original charger and your USB A to C charger.
You can see the charge log rates from 50-90% I posted here for reference (those were performed using two 5x units with exact same software, charging side by side, both said charging rapidly, one was original and another was USB A to C):
http://forum.xda-developers.com/nex...d-charging-t3372898/post67480998#post67480998

Oversemper said:
So it was 19% at 17:58 and at 19:01 it is 70%. Looks pretty rapid for me.
Click to expand...
Click to collapse
That's not 5V/3A charging speed like the stock charger. I get 15% to 85-90% in 60 minutes. Pretty sure that's the 5V/1.8A charging speed I was guessing it to be. My Samsung 5V/2A charger paired with a Type A to Type C cable gets about the same percentage as what you got.
Sent from my Nexus 5X using Tapatalk

I got it, guys! And, @sfhub, I didn't mean any offence by saying "wrong", I just thought that you meant that the words "rapid charging" was not going to show up at all in the range 0-40%, that it was going to be a slow charging just like from a PC usb port. So, anyway, now I'm sure that this charger won't do any harm to the phone. Thanks!

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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Sent from my SM-G955U using Tapatalk

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.

Where to buy Official LG G6 travel charger with type C usb cable

I was wondering if anyone knows where I can buy and Official LG G6 travel charger with the type C USB cable. My charger has a model number of MCS-H06WP. I looked on LG's website but couldn't find where to buy extra chargers. Also Amazon and ebay don't appear to have them. Please help.

Any quality QC 3.0 charged will work. So will QC 2.0 but won't charge as fast.
Sent from my LG-H872 using Tapatalk

skyfox99 said:
Any quality QC 3.0 charged will work. So will QC 2.0 but won't charge as fast.
Sent from my LG-H872 using Tapatalk
Click to expand...
Click to collapse
Yeah any 3.0 will quick charge your phone. There are plenty on Amazon.

citronbull said:
Yeah any 3.0 will quick charge your phone. There are plenty on Amazon.
Click to expand...
Click to collapse
Is this one any good? Aukey? https://www.amazon.com/AUKEY-Charge...040572&sr=8-3&keywords=aukey+quick+charge+3.0

l33tlinuxh4x0r said:
Is this one any good? Aukey? https://www.amazon.com/AUKEY-Charge...040572&sr=8-3&keywords=aukey+quick+charge+3.0
Click to expand...
Click to collapse
Yup, that will do. Aukey is a good brand.

citronbull said:
Yup, that will do. Aukey is a good brand.
Click to expand...
Click to collapse
Thanks for the quick reply.

I can also recommend dodocool. Had a QC 3.0 for 9 months and it does the job.

Has anyone actually tried using a QC 3.0 charger with a G6 to see if they get quick charging? I have two and none of them quick charge the G6. A QC 2.0 charger does work to fast charge the phone, and I believe that's what the phone comes with.

govtcheez said:
Has anyone actually tried using a QC 3.0 charger with a G6 to see if they get quick charging? I have two and none of them quick charge the G6. A QC 2.0 charger does work to fast charge the phone, and I believe that's what the phone comes with.
Click to expand...
Click to collapse
Phone comes with QC 3.0, phone just doesn't register it as such, yet. There's another thread where someone contacted LG.
Sent from my LG-H872 using Tapatalk

You can also found Qualcomm Quick charge 3.0

skyfox99 said:
Phone comes with QC 3.0, phone just doesn't register it as such, yet. There's another thread where someone contacted LG.
Click to expand...
Click to collapse
No....LG G6 bundled charger which comes out of the box...is a QC2.0 charger...because the max output is 9V. For QC3.0...the output is 12V

[email protected] said:
No....LG G6 bundled charger which comes out of the box...is a QC2.0 charger...because the max output is 9V. For QC3.0...the output is 12V
Click to expand...
Click to collapse
The interwebs would seem to disagree as the specs put maximum voltage upwards of 20v for both versions. Voltage isn't as important as amperage, in this case any way. QC 2.0 and 3.0 share similar voltage ranges, but the difference being 3.0 has smaller "step" ranges. So either will actually have variable outputs in voltage and amperage, but 3.0 gives the phone more control for better efficiency (i.e heat control).
Doesn't necessarily prove or disprove the charger version, but rather just pointing it out.
I would be inclined to agree it is a QC 2.0 based of the charger, being seemingly identical to the 2.0 charger from my LG G5, but the model number is slightly different.
Of course, it's disappointing the phone would not release with QC 3.0 if that's the case since it touted 3.0 compatibility, but I have a marked 3.0 charger that does not register 2.0 on the phone, either, so I wonder. I guess it's not that big an issue, especially since there is supposedly little difference in charge times between 2.0 and 3.0.
Sent from my LG-H872 using Tapatalk

Does anyone know if the charger that came with the Nexus 6P ok to use with the G6?

treezy26 said:
Does anyone know if the charger that came with the Nexus 6P ok to use with the G6?
Click to expand...
Click to collapse
First off, let me say that I know nothing of what comes with the Nexus. I do, however, know enough about chargers to say this:
Yes, any charger should work as long as you have the right cable to fit the phone. If it's not QC certified, of course, it'll charge slower, and if it's amperage is low it'll be even slower, but the Nexus is a new enough phone it shouldn't be too slow.

A variety of LG G6 chargers and cables are available at amazon. You can also look at amazon, 6feet long usb 2.0 type c to a charging cables are available.
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