Database Develop

Tested a few chargers

The Galaxy Note 2 comes with a 2 Amp AC adapter/charger so I was curious to compare the charging capability of the stock charger to other chargers that I already own. I cut open a USB to uUSB cord and used a current meter to see how much 5V current was flowing from the charger into the phone. These results are only good for a Galaxy Note 2. Other phones will draw a different about of current (probably lower). Details of the setup can be found far below.
The conditions were:
Battery level = 48%
Voltage was measured on the cable about four inches from the phone
Only the charger was changed between tests (used the exact same cable/setup for each test).
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
The results explain why the Note 2 charges so fast compared to the original Note that I had. Something to keep in mind with dual port chargers...... when I had the two dual port car chargers apart modifying them (the D+ and D- setup so my Note 1 would recognize it as a dedicated charger), I noticed that both chargers used a single 5V regulator and simply ran the power for the two USB ports in parallel. That means that although they say it is a dual 1A charger it could be used as a single 2A charger. I can't say every dual charger is setup that way, but it seems unlikely they would spend the $$ on two different regulator circuits.
Details:
The cable is about three feet long. I cut the cable about four inches from the uUSB connector (where the phone connects). I soldered the ground, data +, and data - wires back together and just left the 5V red wire open so I could insert a current meter (used a Fluke 189 on the 10A mode).
For most people, it is probably best to just buy a car charger that will support 2A for Android. Note that many chargers are setup (their D+ and D- pins) for Apple so you may not get full charging current. That may take a little digging around to see what others have found.

Very interesting! Thanks for posting this as I'd prob would have bought an Iphone car charger. I now know not to, question is what one would be best for matching amperage draw compared to the stock Samsung one(might just order the official, it's cheap).

Thank goodness I bought a lot of those HP touchpad chargers!

I find it interesting your numbers are so far off this breakdown:
http://www.arcfn.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html
One of you isn't right...

I would love to buy a 2A OEM charger but Samsung hasn't had it on their site for quite some time.

keplenk said:
Thank goodness I bought a lot of those HP touchpad chargers!
Click to expand...
Click to collapse
I cleaned up on those HP Touchpad chargers when they were blowing them out for $5 each. I bought five of them and scattered them all around home and work. Of course the GN2 has such good battery life that I probably won't be needing them much.
mdt73 said:
I find it interesting your numbers are so far off this breakdown:
http://www.arcfn.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html One of you isn't right...
Click to expand...
Click to collapse
He tested the maximum current you could get out of each charger. In other words, how much current can you pull until the current limit of the regulator kicks in and the voltage severely drops. I measured how much current the Galaxy Note 2 will pull from each charger. The phone dictates the amount of current pulled as long as that current level is below the maximum current of the charger (he lists the maximum possible current for each charger). If I hooked up the stock Samsung 2A charger to a GS2, it would likely draw less than 1A because it has a smaller battery so it is designed to charge at a lower current. All my results are specific to the Galaxy Note 2.

Here's another crazy data point. I tried 3 different chargers and 4 different USB cables with a killawatt. The stock white cable pulled at least 1.5 more watts than the other cables, which were note1, evo3d and monoprice cables.
At this point I think Samsung increased the wire gauge on the note2 USB cable, to get the resistance down a bit. Hmm this might even be measurable. More stuff to check out tomorrow.
Oh, I tested several 2amp or greater power supplies, and the stock note2 PSU always did slightly better.

[REVIEW] Tenergy and Powermod Quick Charge 2.0 Chargers

A review for the following products:
Tenergy AC Wall Fast Charger with Qualcomm® Quick Charge™ 2.0 technology
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Powermod Quick Charge 2.0 Certified D/C In-Vehicle Car USB Charger
Both chargers are as fast as advertised over my stock HTC A/C charger that came with the phone and my Rockfish car charger I've been using since my HTC Vivid days.
They both came in nice retail packaging and the Powermod car charger comes with a nice (but short) USB cable. The Tenergy wall charger has an LED on it and it is blue when an non QC 2.0 device is plugged in and turns green when a QC 2.0 compliant device is plugged in. Unfortunately the car charger doesn't have this feature. It has a blue light that rings the device but only indicates that it has power. It doesn't change color when a QC 2.0 compliant device is plugged in.
I have found that both of these chargers will not charge my Asus Transformer TF201. I find this strange because I've used other USB style wall chargers with my Asus data cable (the transformer has a proprietary changing port connector) that worked just fine. Still doing research on that one but I'll not be using these to charge my tablet. I just wanted to point this out as some of these QC manufactures say they are backwards compatible with most devices. YMMV.
I've been using both for about 3 weeks and am very happy with the performance of both units.
Below is data from a series of comparison tests to show how much faster the Qualcomm QC 2.0 chargers are over stock type chargers. The data in the HTC vs. Tenergy charger is an average of 4 charges per device. The HTC vs. Tenergy temperature comparison chart is through one full charge cycle from below 20% to 100%. As you can see the QC 2.0 does charge at a higher temperature. I also took the temperature while charging on QC 2.0 with my DotView case on and at 50% the temperature on the back of the case was 91.4 F. I have taken my phone temperature after heavy gaming and the back has actually gotten hotter just playing games than at any time during the charging cycle with QC2.0. I used a IR handheld thermogun we use at work.
The Powermod and Rockfish data is from my commute to and from work that is on average 30 minutes. There are 4 charge cycles for each devise over a 30 minute period.
Conclusion:
The performance of both units is great compared to stock. Since I can already get a full day worth of battery with between 15 and 20% left after a typical day both these chargers just make life easier. If you have to go somewhere but still have 30 minutes before you leave you can "top off" your battery before leaving if you are low. Example, you realize you have less than 10% battery but have some time before you have to leave. Plug you QC 2.0 charger in and get to at least 50% in that time. I feel much better walking out the door with 50% than 10%. With the car charger you can keep your battery "topped off" between destinations. Time will tell on the longevity of the phone battery and the chargers themselves.
I hope you've found this helpful.
I recommend both of these units.:good:

Images do not work here...

OP,
Some links would be nice. I rarely ever have any issues with running out of power like you have stated. I usually charge while i'm at my desk at work all day, and when I sleep at night, and I never have had an issue with an empty battery. I'm sure some people do have trouble with that; like those who spend all day on the phone, but I'd like to see which products you are talking about, OP.
Thanks!

waynerbbx said:
OP,
Some links would be nice. I rarely ever have any issues with running out of power like you have stated. I usually charge while i'm at my desk at work all day, and when I sleep at night, and I never have had an issue with an empty battery. I'm sure some people do have trouble with that; like those who spend all day on the phone, but I'd like to see which products you are talking about, OP.
Thanks!
Click to expand...
Click to collapse
I'm pretty sure this and this is what OP has in mind, but I could be wrong.

Actually I'm not sure why my pictures are not showing up. I have my pictures set to public. I'll move them and try another location as soon as I get to work.
I see the pictures.........anyone else see them?

Pictures are working now. And holy cow..that's some impressive work Thanks for taking the time to test it all!

Thanks for the input.
I have the Tenergy wall charger and I have been pleased with the results. I will probably buy the same car charger you have next.

Glad everyone seeing the data now. I put this together because of all the questions on QC 2.0 that past few months.
BTW - I do crap like this all the time at work so it really wasn't that much work other than gathering the data. The charts etc took less than an hour to create after I had all the data I wanted.

Cheers mate!
Great data indeed
Sent using Tapatalk

abyssis said:
I'm pretty sure this and this is what OP has in mind, but I could be wrong.
Click to expand...
Click to collapse
Interesting! Thank you for sharing the links!

Thanks for your input M8!

Nice review,thanks!

I bought the car charger and it is not turning green when I plug my phone into it. Do I need to do something different?

Phrostbite said:
I bought the car charger and it is not turning green when I plug my phone into it. Do I need to do something different?
Click to expand...
Click to collapse
The car charger doesn't indicate if it's charging at QC 2.0 specs. Only the wall charger does that. The only way you can tell that the car charger is doing it's QC 2.0 is by the battery level or using an inline USB current meter that will show the charge rate.
Sorry for the confusion, I'll update my review.

Anker Quick Charge 3.0 (Charger Review)

*Disclaimer*.....the S7 does not support Quick Charge 3.0. It only supports 2.0 but I may be picking up the G5 or HTC 10 which does support it.
I needed a new/extra charger so I figured I'd get something that supports the latest Quick Charge technology.
The charger itself feels well made. The prongs fold in for traveling purposes and it doesn't block the outlet/outlets sitting next to it. In regards to noise this charger makes none of it. Those who have used cheap chargers know the humming/buzzing noise I'm referring to. It's extremely annoying.
Now onto the part that really matters. I haven't had the time to compare this charger to the stock Samsung charger in regards to really putting them through the paces but early results look promising for the Anker.
I started the charge process with quick charge enabled at 5% and started a timer for 30 minutes. The stock Samsung charger was able to bring the battery to 43% while the Anker charger brought the battery to 52%.
Within the next few days I will do a test from 5% to 100% both with quick charge enabled and disabled.
On a side note I also picked up a 6 foot kevlar wrapped Anker micro USB cable. It feels well made and the connections are nice. I probably wouldn't have bought it if it wasn't on sale but I needed a new long micro USB cable.
So far I'd have to say that if you need another charger and you want Quick Charge 3.0 for another phone then go ahead and grab one. If you don't really need another charger or don't need Quick Charge 3.0 then I wouldn't waste the money on one unless you really want the slightly faster charging for the S7 Edge.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my SM-G935T using Tapatalk

silly noob question alert:
Will qc 3.0 devices, charge the s7 edge at qc 2.0/fast charge rates?
Assuming you used an s7 for your charging experiments above, then it appears they do....thanks for post

dazzer1975 said:
silly noob question alert:
Will qc 3.0 devices, charge the s7 edge at qc 2.0/fast charge rates?
Assuming you used an s7 for your charging experiments above, then it appears they do....thanks for post
Click to expand...
Click to collapse
No, it will charge at the same speed as a QC 2.0 charger since there S7/S7E don't support QC 3.0

That's exactly what I asked, re qc2.0 but thanks for clarification, I wasn't sure if qc3.0 was 'backwards compatible' kind of thing

dazzer1975 said:
That's exactly what I asked, re qc2.0 but thanks for clarification, I wasn't sure if qc3.0 was 'backwards compatible' kind of thing
Click to expand...
Click to collapse
It is backwards compatible with QC 2.0. I did a test of those chargers QC 2.0/3.0, Wireless, fast wireless that you can see in my signature. The charge times are identical as you will see.

awesome, cheers dude

dazzer1975 said:
silly noob question alert:
Will qc 3.0 devices, charge the s7 edge at qc 2.0/fast charge rates?
Assuming you used an s7 for your charging experiments above, then it appears they do....thanks for post
Click to expand...
Click to collapse
Yes, quick charge 3.0 compatible with all qc2.0 supported devices, like S7 edge.
So I search on Amazon and find that Anker, iClever, Aukey released their new quick charge 3.0 usb chargers.

Could you check the numbers with Galaxy Charging Current?
When you refer to the Samsung stock charger, do you mean the wired one or the Samsung Fast Charge wireless charger?

A_N_D_R_E said:
Could you check the numbers with Galaxy Charging Current?
When you refer to the Samsung stock charger, do you mean the wired one or the Samsung Fast Charge wireless charger?
Click to expand...
Click to collapse
Wired. I have no use for wireless chargers.

Once you go wireless you don't go back. lol I hate wires. I have four wireless chargers. Three were pretty much free. With T-Mobile Jump (phone junkie) I just sell my fast charging cablez and headphones for a few bucks since I don't need anymore. So why didn't Samsung put 3.0 charging in the S7 Edge?

I guess they designed the phone before quick charge 3.0 was available? Maybe it hurt they're bottom line? I don't know but whatever the reason it was a stupid decision.
The reason I don't like wireless chargers is because the only time I ever charge my phone is either in the car or while laying in bed. In both places I like using the phone while it charges.
Sent from my SM-G935T using Tapatalk

jrwingate6 said:
I guess they designed the phone before quick charge 3.0 was available? Maybe it hurt they're bottom line? I don't know but whatever the reason it was a stupid decision.
The reason I don't like wireless chargers is because the only time I ever charge my phone is either in the car or while laying in bed. In both places I like using the phone while it charges.
Sent from my SM-G935T using Tapatalk
Click to expand...
Click to collapse
No, QC has it as part of the SoC, si its supported technically but Samsung chose not to use it for an unknown reason.

They disabled it in the Snap dragon version because the other phone with their own SOC wouldn't support it so to keep the 2 on parity they disabled ours.

Charging an S7 Edge/Flat using a 9V rectangular disposable battery

Galaxy S7 Edge/Flat has qualcomm quick charge 2.0 support which means it can handle an input voltage up to 12V. Our stock fast charger has an output voltage of 9V and ideally, we shouldn't go further than that.
Regarding the current rating, it really doesn't matter if our source (i.e wall charger) will have really high current output since the source will only release what the load (i.e our phone) can only take.
Now in theory, we can charge our S7 Flat/Edge or any other Qualcomm Quick Charge 2.0 devices with an ordinary 9V battery but I haven't tested it. If anyone has done this before, we would gladly love to hear you out on this.
Here's a picture from android authority showing the input voltage and current of an S6 charging.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

annson08 said:
Galaxy S7 Edge/Flat has qualcomm quick charge 2.0 support which means it can handle an input voltage up to 12V. Our stock fast charger has an output voltage of 9V and ideally, we shouldn't go further than that.
Regarding the current rating, it really doesn't matter if our source (i.e wall charger) will have really high current output since the source will only release what the load (i.e our phone) can only take.
Now in theory, we can charge our S7 Flat/Edge or any other Qualcomm Quick Charge 2.0 devices with an ordinary 9V battery but I haven't tested it. If anyone has done this before, we would gladly love to hear you out on this.
Here's a picture from android authority showing the input voltage and current of an S6 charging.
Click to expand...
Click to collapse
You need to use a car charger to charge a phone with a 9v. Take the socket part apart, one strip is positive and one is negative. Wall plugs use 120v in which is not 9v.

Michaelmansour1997 said:
You need to use a car charger to charge a phone with a 9v. Take the socket part apart, one strip is positive and one is negative. Wall plugs use 120v in which is not 9v.
Click to expand...
Click to collapse
No, you don't understand. What you're talking about is INPUT voltage of the wall charger. Take a look at our stock wall charger, it has an OUTPUT voltage of 5V and 9V. Qualcomm quick charge 2.0 enables our phones to be charged on higher voltage (up to 12V). In the case of our s7e, it's only 9V afaik. I'm not talking about ordinary phones, I'm talking about phones with quick charge 2.0. You can even look at our battery info in the settings, it displays that our battery is rated at 9V. Here let me take a screenshot of it.
Spoiler
Sent from my SM-G930F using Tapatalk

It's an interesting topic. The OP is correct about the voltage regarding supported devices, the input voltage is irrelevant, as the output is always going to be transformed to appropriate DC voltage by any supported device. The phone (and all battery powered electronics, such as laptops, watches, etc) can only accept DC, or they would probably explode.
As far as using a 9v battery, I'm skeptical you'd be able to effectively charge a phone with it. Yes it produces 9Vs, but are designed to be used at low amperage, 8 milliamperes (Fast chargers use 2 amps)...moreover, from what I've read they generally only store 400-1000 mah. Considering our phone batteries hold 3600 mah, it would make a single 9v battery fairly useless for charging. If you used several in parallel perhaps.
Or perhaps one of these at 3500 mah... http://www.batterymart.com/p-ulhd6vsc-ultralast-6v-heavy-duty-lantern-battery.html ...but it would have the same problem with being designed for low amperage. If the phone drew the voltage at highers amps, it would heat up the battery and probably lower the total charge it would provide.

I think turbo has the right idea. Alkaline 9v has about 600 mah so to fully charge a dead battery , you would need to parallel about 6 together. And it would probably take awhile. Cheap rechargeables often are between 7 and 8 volts so to be cost efficient would be difficult but the idea in general should work. Good outside the box thinking OP!

I... maybe....
I dunno maybe it's just me but...
...why!?
Just buy a rechargeable battery pack and be done with it. Honestly see no point or reason to want to do this outside of pure intrigue. Nobody is going to carry around several 9v batteries and even less likely to want to carry a lantern battery!

Question [Solved] Third-Party Charging Block and Charging

Hopefully, some of you more seasoned members can help me understand charging variables a bit more beyond just rated wattage. So let's begin.
I live in the U.S so I had to purchase a third-party charging block for the Mi 11 since it came with a European one. I ended up getting two because one I bought for a really good price. They're both 65W "GaN" charging blocks (MI 11 uses 55W charging), using the same power source, the same cable (Xiaomi OEM currently). However, I'm getting different results with both.
RavPower
$35
65W
Charging Fast
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Setakaa(Unbranded/Multi)
$15
65W
MI TURBO CHARGE/Charging Rapidly
Does anyone know why the RavPower one doesn't utilize MI Turbo Charge?
Thanks for any helpful input in advance

"I live in the U.S so I had to purchase a third-party charging block for the Mi 11 since it came with a European one"
you could have just bought this for much cheaper:
Amazon.com : eu us adapter

With the Ravpower, did you try both ports? Because in the marketing sheets on the URL you provided, it says it does support QuickCharge 3.0. Now, Xiaomi's TurboCharge is actually QC from Qualcomm so that is the same.
The only thing I see is that the Ravpower does 18w QC which isn't that much. The other one can go up to 45 and 65w. Mabe the TurboCharge doesn't kick in because 18w isn't enough to actually be...turbo.

Furma said:
"I live in the U.S so I had to purchase a third-party charging block for the Mi 11 since it came with a European one"
you could have just bought this for much cheaper:
Amazon.com : eu us adapter
Click to expand...
Click to collapse
That's very true. I actually have a travel adapter that can convert EU to US and vice versa. I just preferred getting a dedicated power block over an adapter in this instance.
Danacy said:
With the Ravpower, did you try both ports? Because in the marketing sheets on the URL you provided, it says it does support QuickCharge 3.0. Now, Xiaomi's TurboCharge is actually QC from Qualcomm so that is the same.
The only thing I see is that the Ravpower does 18w QC which isn't that much. The other one can go up to 45 and 65w. Mabe the TurboCharge doesn't kick in because 18w isn't enough to actually be...turbo.
Click to expand...
Click to collapse
Yes and no. I've used the USB Type-C port on the RavPower, as well. It resulted in "Charging Fast" in those instances. However, I think this is due to cable I was using. The cable said it is rated for 60W but I'm skeptical of it as it is a magnetic cable and I haven't tried it with other blocks to confirm it can. Other than that, I don't believe I have any Type C to Type C cables rated that high.
Oh, I feel foolish for not catching the RavPower only putting out 18W on the USB-A. The Setakaa puts out 60W for USB-A so that definitely explains it

iamrance.asa said:
That's very true. I actually have a travel adapter that can convert EU to US and vice versa. I just preferred getting a dedicated power block over an adapter in this instance.
Yes and no. I've used the USB Type-C port on the RavPower, as well. It resulted in "Charging Fast" in those instances. However, I think this is due to cable I was using. The cable said it is rated for 60W but I'm skeptical of it as it is a magnetic cable and I haven't tried it with other blocks to confirm it can. Other than that, I don't believe I have any Type C to Type C cables rated that high.
Oh, I feel foolish for not catching the RavPower only putting out 18W on the USB-A. The Setakaa puts out 60W for USB-A so that definitely explains it
Click to expand...
Click to collapse
No, so many specs. Good you as here, that is what it's for
Also, haven't see 65w magnetic cables yet. But also, I don't think they adhere to the USB-IF specs so I stay away from them. I would suggest a good certified cable, plug it into the USB-C and see what happens
Also, charging with 18w is definitely better for the durability of you battery. Don't turbo charge when not needed. My advice.

Danacy said:
With the Ravpower, did you try both ports? Because in the marketing sheets on the URL you provided, it says it does support QuickCharge 3.0. Now, Xiaomi's TurboCharge is actually QC from Qualcomm so that is the same.
Click to expand...
Click to collapse
Is Turbo Charge really QuickCharge and not Power Delivery?

Xiaomi verwendet eine abgewandelte Form von PD