Develop Bugs

Best Charger For GNex (or any USB device)

I've been hunting for an extra, high quality, 2A USB charger for my devices - but I didn't want to pay $25-$30 to get a Samsung or Asus 2A USB charger. And then I came across this blog entry by Ken Shirriff where he went and reviewed 12 different USB chargers including genuine and fake apple chargers + other brands.
http://goo.gl/rym3M
Really good and informative post. Definitely recommend a read. For the Cole's notes version, apple makes great USB chargers ... but not the best. The best USB charger in this review actually turned out to be the USB charger that came with the ill-fated HP TouchPad. This charger has very low noise and voltage drop characteristics.
What's more, you can actually get these great HP chargers for $15 on eBay. Or via Kijiji for $15 if you're in the Toronto area.
Mine is off Kijiji and here are logged screenshots of my GNex charging from 12% to 100% with both the Samsung charger that came with it and the HP Charger.
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FYI, I use this charger for both my GNex and my N7. I've posted OEM vs HP Charger graphs from my N7 here.

I see nothing in those graphs that makes me think one is better than the other. The lines are virtually identical, they go from 12%-100% in the same amount of time.
Sent from my Galaxy Nexus using xda app-developers app

RyanTX said:
I see nothing in those graphs that makes me think one is better than the other. The lines are virtually identical, they go from 12%-100% in the same amount of time.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
It doesn't buzz like the stock one and it doesn't get hot when charging the GNex at ~1A like the stock one does. As well, this charger is capable of handling tablet charging as well. Guess I should have indicated all this in my first post.

RyanTX said:
I see nothing in those graphs that makes me think one is better than the other. The lines are virtually identical, they go from 12%-100% in the same amount of time.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
The post is rating the chargers on far more than just how quickly it charges a phone.
Just to add my two cents, anecdotally, before even seeing this post, I was going to say that the touchpad chargers have been the best I've used also. Glad i bought 4 or 5 of them for $5/each when hp went on their firesale binge.

I read that same article and bough two of them months ago for $6. They are great. They do have a slight buzz if you put your ear up to them but nothing like the samsung one. Highly recommend them.

Interesting article. Not really sure what to make of it though, beyond not buying counterfeit chargers?

I've actually got a bunch of those HP chargers for my Gnex. I got them straight from HP for $4 each last summer. Very awesome chargers.

Is it healthy to charge the battery that fast ?

Cupellom said:
Is it healthy to charge the battery that fast ?
Click to expand...
Click to collapse
I think its not.
Sent from my Galaxy Nexus using Tapatalk

Cupellom said:
Is it healthy to charge the battery that fast ?
Click to expand...
Click to collapse
palco2 said:
I think its not.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
Well... the battery charges at the same speed for both the stock 1A charger and the HP 2A charger. The device itself regulates how much power it will draw, and drawing 1A from a 2A charger is surely more efficient and will result in a longer lasting and better charger, as well as one that can be used for tablets and other USB devices that want to draw more than 1A. I wonder if you can take the 2A charger and put a USB Splitter or something on there and charge 2 1A devices at the same time... I'd imagine so.

I use my OEM Galaxy S4 charger. It charges all of my devices faster than any other charger I've ever tried.

USB 2.0? Also, what does CPDDR4 mean?

So I looked at the Note 7 highlights over at Samsung's website and saw two things that surprised me.
http://www.samsung.com/global/galaxy/galaxy-note7/
1. It says that while the phone does use USB type C, it's actually USB 2.0 and not 3.1 like many thought it would be. Didn't see anyone mention this.
2. It says the phone has 4GB of RAM, but instead of the usual LPDDR4 it says CPDDR4. A Google search doesn't bring up anything on this.
Just wanted to see what your thoughts are on this.

Yes it sucks but its True
No Usb 3.1 just 2.0
meaning no fast transfer from phone to PC
Hope they will have it in the S8

According to the website today, it WILL have 3.1.
Sent from my LG-H901 using Tapatalk

Yeah, just read the spec sheet for US models and it states USB 3.1
Sent from my SM-G935F using Tapatalk

Hi guys,
So it appears that the global variant is indeed 2.0 while the U.S. variant is 3.1. Here's a comparison straight from Samsung's spec sheets.
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Sources:
http://www.samsung.com/global/galaxy/galaxy-note7/
http://www.samsung.com/us/explore/galaxy-note-7-features-and-specs/

Yeah my bad. I didn't check the International version.
Sent from my LG-H901 using Tapatalk

Different chipsets = different functions

Where is apt-x.

A bit depressing to see it only has 2.0, I transfer a lot of phones on and off my phone.

Damn. What a shame.

Damn, so there is no practical use from that USB-C... maybe at night it will be easier to connect it to charge.

mk89pwnz said:
Damn, so there is no practical use from that USB-C... maybe at night it will be easier to connect it to charge.
Click to expand...
Click to collapse
At least internationally there isn't much. But the charging block for the Note 7 is reported to not be the same as the s7, or the Note 5. So maybe a stronger charging current?!?

boufa said:
At least internationally there isn't much. But the charging block for the Note 7 is reported to not be the same as the s7, or the Note 5. So maybe a stronger charging current?!?
Click to expand...
Click to collapse
Could be usb-c tipe should provide a litlle bit faster charging. Changing cables even with provided adapter will be a pain in the ass. Decided even to buy the wireless fast charger and always have my wall charger in the bag. The stupid part is that I will have to buy a old adaptive fast charger with micro usb to power the wireless charger or maybe Samsung is releasing the one with usb-c port soon? Soon I will feel like a iPhoner that can't borrow a damn charger from a friend and to say my phone have usb tybe c ant it's only 2.0 what... stupid sammy they have always to let you down

mk89pwnz said:
Could be usb-c tipe should provide a litlle bit faster charging.
Click to expand...
Click to collapse
The charging will be faster. The Note7 has a new adaptive charger that's 12V/2.1A vs. the Note5 and S7-series that used 9V/1.2A. Quick Charge 2.0 supports up to 12V/2A and has no USB-C requirement. Who knows what Samsung's interpretation of USB-C is. We'll have to wait for sites like Anandtech and GSMArena to do their full reviews to find out what Samsung's implementation does and doesn't bring.

BarryH_GEG said:
The charging will be faster. The Note7 has a new adaptive charger that's 12V/2.1A vs. the Note5 and S7-series that used 9V/1.2A. Quick Charge 2.0 supports up to 12V/2A and has no USB-C requirement. Who knows what Samsung's interpretation of USB-C is. We'll have to wait for sites like Anandtech and GSMArena to do their full reviews to find out what Samsung's implementation does and doesn't bring.
Click to expand...
Click to collapse
Then at least something from it will have to change so much cables but sooner or latter we all have to.

Dat Noob said:
Hi guys,
So it appears that the global variant is indeed 2.0 while the U.S. variant is 3.1. Here's a comparison straight from Samsung's spec sheets.
Sources:
http://www.samsung.com/global/galaxy/galaxy-note7/
http://www.samsung.com/us/explore/galaxy-note-7-features-and-specs/
Click to expand...
Click to collapse
Can someone that has international version check the transfer speed? *hoping that they write it by mistake*

BarryH_GEG said:
The charging will be faster. The Note7 has a new adaptive charger that's 12V/2.1A vs. the Note5 and S7-series that used 9V/1.2A. Quick Charge 2.0 supports up to 12V/2A and has no USB-C requirement. Who knows what Samsung's interpretation of USB-C is. We'll have to wait for sites like Anandtech and GSMArena to do their full reviews to find out what Samsung's implementation does and doesn't bring.
Click to expand...
Click to collapse
Source? Typo I'm assuming. I HIGHLY doubt they're pumping 12V at 2.1A - that's about 25 watts of power. No way.

Nitemare3219 said:
Source? Typo I'm assuming. I HIGHLY doubt they're pumping 12V at 2.1A - that's about 25 watts of power. No way.
Click to expand...
Click to collapse
Maybe they are working on a USB refrigerator?

Nitemare3219 said:
Source? Typo I'm assuming. I HIGHLY doubt they're pumping 12V at 2.1A - that's about 25 watts of power. No way.
Click to expand...
Click to collapse
Samsung website shows the charger as 2A / 25 watt:
http://www.samsung.com/us/mobile/mo...--detachable-usb-c-usb-cable--ep-ta300cwegus/

drum747 said:
Samsung website shows the charger as 2A / 25 watt:
http://www.samsung.com/us/mobile/mo...--detachable-usb-c-usb-cable--ep-ta300cwegus/
Click to expand...
Click to collapse
Pocket now just posted an unboxing video showing a standard charger like s7e:/ rly don't get samsung

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.

Good Wireless Charger?

Has anyone found a good, reliable wireless charger for their G7 yet? (My cheap $15 charging stand isn't cutting it and I'm about to whip it against the wall).

I've been using this one by Anker, charging it overnight. Takes about 2 hours to fully charge from about 30% to 100%
No issues with it yet but only have had it about 2 weeks now.
https://www.amazon.com/gp/product/B0753Z4PGC/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

Mikestony said:
I've been using this one by Anker, charging it overnight. Takes about 2 hours to fully charge from about 30% to 100%
No issues with it yet but only have had it about 2 weeks now.
https://www.amazon.com/gp/product/B0753Z4PGC/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
Click to expand...
Click to collapse
Thanks! I have about 4 older Samsung charging pucks. What's strange is that two work fine, but the other two don't charge my G7 at all. (I'm sure it has something to do with the USB cable and/or plug that I'm using).

Issemann said:
Thanks! I have about 4 older Samsung charging pucks. What's strange is that two work fine, but the other two don't charge my G7 at all. (I'm sure it has something to do with the USB cable and/or plug that I'm using).
Click to expand...
Click to collapse
Bear in mind that you have to use the supplied cable, along with your o.e. charger for the Anker stand. The port on the back of the stand is a micro usb, not a usb-c.

I've been using one like this one for years no issues and good brand..
I have the older model but I see this one with same specs
https://www.amazon.com/Wireless-Charger-CHOETECH-Position-Charging/dp/B078HV3V6M
Also found this one..
7.99 with promo code DT2XNIU7, down from $12.95
It has another 5% off clip coupon
https://www.amazon.com/CHOETECH-Wireless-Certified-Anti-Slip-Qi-Enabled/dp/B00C40OG22
LG G7

LG G7 FAST CHARGING COMPATIBILITY
Trust Primo10

I use a few of these throughout the house. Nice to have by the computer or sofa
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http://naztech.com/index.php?route=product/product&path=370&product_id=639

G7 will say fast charging on a 10W wireless charger but LG says the phone supports 15W for true fast charging. Belkin and a handful of others make true 15W fast wireless chargers.
Watch out for off brands as many will say 15w but are actually 10w.
Im using a mophie here and it says fast wireless charging at 10w.
Sent from my LM-G710 using Tapatalk

Mikestony said:
I've been using this one by Anker, charging it overnight. Takes about 2 hours to fully charge from about 30% to 100%
No issues with it yet but only have had it about 2 weeks now.
https://www.amazon.com/gp/product/B0753Z4PGC/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
Click to expand...
Click to collapse
Good call on this charger. I picked it up on your recommendation after seeing the price before I even owned this phone and I can confirm it works great. Anker makes solid products so the price makes it even better. Thanks!

Another vote for the Anker Charger
I've been using the Anker model A2523 wireless charger with no problems. It doesn't charge super fast, but I use it for overnight charging, so that's not a problem. While charging, the battery never goes above 30 degrees centigrade, which is 2 to 4 degrees cooler that when I was using the original LG plug in charger that came with the phone! The Anker uses a Micro USB port for power, so I also got a USB-C to Micro USB adapter, so that if I need to recharge quickly, I can just unplug the LG charging cable from the adapter which is plugged into the back of the Anker charger and plug it into the phone. I think that's the best solution until more USB-C wireless chargers are produced.

Alcolawl said:
Good call on this charger. I picked it up on your recommendation after seeing the price before I even owned this phone and I can confirm it works great. Anker makes solid products so the price makes it even better. Thanks!
Click to expand...
Click to collapse
Does it show as fast charging with this charger?

Jayman007 said:
Does it show as fast charging with this charger?
Click to expand...
Click to collapse
No, it just states it's charging wirelessly. It's not too fast but perfect for overnight without roasting the phone or battery.

just got the UMIDIGI Q1 , and it says fast wireless charging.
Have some others scattered around the house that is 5w, like choetech t513

I have quite a few Anker products, so when I was looking for a bedside wireless charger, I was almost sure I would end up with them. However, after researching on Amazon for about an hour, I ended up buying the Yootech Wireless Charger (the goofy company name made me think that it might be a cheap rebrand, but it's been a rock solid device). I can say for the LG G7 that this is an amazing charger (although it supports a wide range if you or someone else might want to use it with a different device; especially an older one) that comes with an impressive AC adapter (it doesn't get warm while in use, something that sometimes happens with more compact adapters). It does use MicroUSB instead of USB-C and maxes out at 10W instead of 15W, however it tops up my phone from 20 - 30% to 100% in less than two hours so it's a keeper for me and allows me to save my included charger specifically for travel.

I got the BlitzWolf BW-FWC4 from Amazon for €15. Fast wireless charging thanks to QI-EPP compatibility. Works flawlessly through my Voia case. Charges almost as fast as wired. I'm using the original wall charger to power it.

got the nillkin 15w qi powerflash. Fast charging works and cooler than UMIDIGI Q1 thanks to buil in fan.

mangoman said:
got the nillkin 15w qi powerflash. Fast charging works and cooler than UMIDIGI Q1 thanks to buil in fan.
Click to expand...
Click to collapse
Hey, what are the charging speeds on the Nillkin? Does it charge as fast as the UMIDIGI ? Their description does not mention fast charging for LG so was wondering.

viralbug said:
Hey, what are the charging speeds on the Nillkin? Does it charge as fast as the UMIDIGI ? Their description does not mention fast charging for LG so was wondering.
Click to expand...
Click to collapse
not noticed a difference

Will this charger fast-charge Pixel 2 XL ?

Will this charger fast-charge Pixel 2 XL if I use it with a type-c to type-c cable ?
http://www.mxonline.com.pk/branded-...-usb-quick-charge-for-iphone-8-x-ipad-macbook
UPDATE: What about this one? https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/

I doubt a 1A would

The amperage of the power source must equal or exceed that of the device. Our device is 9V/2A or 5V/3A. This charger is only 2A at 5V. Attempting to use it will cause the components to overheat. In quick fashion you'll burn out the charger at best, or cause a house fire at worst.

pbman1953 said:
I doubt a 1A would
Click to expand...
Click to collapse
Strephon Alkhalikoi said:
The amperage of the power source must equal or exceed that of the device. Our device is 9V/2A or 5V/3A. This charger is only 2A at 5V. Attempting to use it will cause the components to overheat. In quick fashion you'll burn out the charger at best, or cause a house fire at worst.
Click to expand...
Click to collapse
What about the one below:
https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/
Also are Qualcomm 3.0 chargers safe to use?

That one provides 3 amps at both 5 and 9 volts. The P2XL only requires 2A at 9V, therefore that charger will safely quick charge the P2XL.
The brand of charger is irrelevant here. The only two things that matter on a charger are the voltage and the amperage. I've already covered the requirements for amperage in post 3 above. The requirements for the voltage are that the voltage of the power source must equal the voltage of the device itself. Unlike the amperage, if the voltage does not match your device will end up permanently damaged.

Strephon Alkhalikoi said:
That one provides 3 amps at both 5 and 9 volts. The P2XL only requires 2A at 9V, therefore that charger will safely quick charge the P2XL..
Click to expand...
Click to collapse
You are referring to this? >> https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/
Im currently using the one below and it charges slow as hell...is it even safe to use?
http://www.plugintec.com/surge-qc/
Also this one seems to fulfill the requirements you stated but its usb-a to usb-c instead of usb-c to usb-c. does that matter?
https://www.ishopping.pk/huawei-quick-charger-2a-with-micro-usb-cable.html
Also the one below does 5.0V/2.5A 9V/2A 12V/1.5A....will that work?
https://www.xiaomistore.pk/specs/gid/389

ranasrule said:
You are referring to this? >> https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/
Click to expand...
Click to collapse
Yep.
The plugintec device I wouldn't trust, though it apparently is capable of matching the voltage as well as match the amperage. The fact it has variable voltages is not something I've encountered. I would take a multimeter to the USB port on the charger and see what the voltage actually is, as it may not be correct for the P2XL.
The Huawei charger only outputs 2A at 5V, meaning you'd burn it up. The Xiaomi charger only outputs 2.5A at 5V, meaning you would burn it up, although that one would take longer to wear out. What I am not understanding here is why you do not simply get the actual charger. On Amazon they have it for about 20 USD (2,477.92 PKR) and I'm fairly certain they ship worldwide. The only thing you may need would be a plug adapter, if Pakistan doesn't use US standard blade plugs.

Strephon Alkhalikoi said:
What I am not understanding here is why you do not simply get the actual charger. On Amazon they have it for about 20 USD (2,477.92 PKR) and I'm fairly certain they ship worldwide. The only thing you may need would be a plug adapter, if Pakistan doesn't use US standard blade plugs.
Click to expand...
Click to collapse
I would love to get an original one from amazon but the problem is the cost of shipping. If I could get it for 20 USD with free shipping I would go for it in a heartbeat.

I would find a way to do it anyway. It's the only foolproof means of ensuring nothing goes wrong with the device you spent a lot of money on.

using this now to charge my phone. no problem with fast charging.
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https://www.aliexpress.com/store/pr...l?spm=2114.12010612.8148356.23.60546014WzMqFb

I don't think it's only about the volts and amps. QC 3 might have some same profiles as USB PD but USB PD devices can't negotiate the profiles with QC protocol charger's. Someone correct me if I'm wrong.
USB PD is only available on USB-C chargers that support the USB PD protocol.
For the pixel 2xl you need a USB-C PD charger that can do 5V/3A and 9V/2A for rapid charge.

reactor_sa said:
I don't think it's only about the volts and amps.
Click to expand...
Click to collapse
I think you're right about that. I'm only concentrating on volts and amps for safety reasons.

Hello guys, may I know what is max wattage your pixel 2 xls are giving? I believe it's locked at 18W. But due some reason my phone charges blazing fast n shows 27W. I use custom ROM n aukey charger.

psnijjar said:
Hello guys, may I know what is max wattage your pixel 2 xls are giving? I believe it's locked at 18W. But due some reason my phone charges blazing fast n shows 27W. I use custom ROM n aukey charger.
Click to expand...
Click to collapse
It was originally only 10.5W when the first first came out:
https://www.xda-developers.com/google-pixel-2-xl-charging-speed-functionally-capped/
But I think that's changed with updates but I never read any official confirmation of it.
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