Develop Bugs

[Q] Rapid Chargers - Not Really Rapid?

i bought that Motorola Rapid Car charger recent and have been using it about a week now. i've noticed that it doesn't seem to charge my Thunderbolt any faster then it did when i was using the Thunderbolt's USB cable with this USB car charger adapter.
so, my question is, why is it called "rapid" if it doesn't charge any faster?
and i suppose secondly, is there an actual microUSB charger that will charge the Thunderbolt faster?
they make one for the iphone that will fully charge it in 30 minutes so i know they are out there.

voxigenboy said:
i bought that Motorola Rapid Car charger recent and have been using it about a week now. i've noticed that it doesn't seem to charge my Thunderbolt any faster then it did when i was using the Thunderbolt's USB cable with this USB car charger adapter.
Click to expand...
Click to collapse
Maybe you should try this one.

Install the battery monitor widget. Monitor the battery for about 20 minutes while charging. Tell us what the charge current is.
Does the Motorola charger include a cable? If not, you may just have a weak cable. I have seen cheap cables with wire so thin that the charging current is no better then charging off a weak USB port.

My experience has been that the phone typically recognizes car charges as USB charging and uses a different charging profile. My solution to that is use a wall charger through an inverter or a kernel that doesn't use radically different charging profiles for A/C and USB.

loonatik78 said:
My experience has been that the phone typically recognizes car charges as USB charging and uses a different charging profile. My solution to that is use a wall charger through an inverter or a kernel that doesn't use radically different charging profiles for A/C and USB.
Click to expand...
Click to collapse
No need for that.
Cut a small piece of aluminum foil. Carefully place it where it shorts the two center conductors in the charger. Plug the USB cable into the charger. Make sure the foil stays in place over the two center conductors.
It is now a high rate charger. (assuming it can put out 1 amp.)

The limiting factor is typically the usb cable itself. Most usb cables can't support the 1amp that is provided to it. Since you used the original usb cable that came with the thunderbolt (that's been "shorted" as mentioned above" ) it will be just as fast as the moto car charger. the 1amp charging rate that the moto charger charges at (i have one) and that the original one charges at are already "rapid". if you plugged a normal usb cable from somewhere else into the other usb car charger, it'd be much much slower

squeakyl said:
The limiting factor is typically the usb cable itself. Most usb cables can't support the 1amp that is provided to it. Since you used the original usb cable that came with the thunderbolt (that's been "shorted" as mentioned above" ) it will be just as fast as the moto car charger. the 1amp charging rate that the moto charger charges at (i have one) and that the original one charges at are already "rapid". if you plugged a normal usb cable from somewhere else into the other usb car charger, it'd be much much slower
Click to expand...
Click to collapse
The stock charger is what shorts the connections. The cable is NOT shorted on the two inner pins because they are the data connections used for connecting your phone to a computer.

doodlebro said:
The stock charger is what shorts the connections. The cable is NOT shorted on the two inner pins because they are the data connections used for connecting your phone to a computer.
Click to expand...
Click to collapse
To meet the USB charging spec (which the TB uses), the two inner (data) contacts should be shorted with no more that 200 ohms.
But, the cable can also be an issue for rapid charging. The voltage drop for a 1A/5V source, across only .5 M of 28 gauge copper is ~220 mV. If you use a longer cable, there's more voltage drop. The TB likely current limits itself when the voltage drops below a certain threshold. Best to buy 24 gauge USB cables, if you can, especially if getting longer ones (monoprice has them).

voxigenboy said:
i bought that Motorola Rapid Car charger recent and have been using it about a week now. i've noticed that it doesn't seem to charge my Thunderbolt any faster then it did when i was using the Thunderbolt's USB cable with this USB car charger adapter.
so, my question is, why is it called "rapid" if it doesn't charge any faster?
Click to expand...
Click to collapse
I think its a matter of rated output current. BUT on the other side, the phone must be capable of drawing/using that much current. If the adapter is rated for more current than the phone can charge, the "extra" current wont be supplied.
Initially, Moto's standard car chargers output 5V and up to 550ma max (just like a standard PC USB port) so they didn't charge phones all that fast. Moto then came out with chargers that had higher current output, so they were capable of charging the phones "faster" than the original car chargers (but on par with the home/travel/AC chargers) and called them "rapid car chargers"..
Today, the current output on the Moto SPN5400A car charger is 0-950mA, and I've seen it sometimes referred to as "Rapid Car charger."
But as far as I know, Moto no longer makes/sells the lower current car chargers, and their web site only shows one MicroUSB and one MiniUSB car charger for sale, both of which appear to be of the 0-950mA output variety.
voxigenboy said:
and i suppose secondly, is there an actual microUSB charger that will charge the Thunderbolt faster?
they make one for the iphone that will fully charge it in 30 minutes so i know they are out there.
Click to expand...
Click to collapse
Just because someone makes such a charger for the iPhone, doesn't mean one must exist for the TB, or other phones, does it? I know the iPad uses a 2A charger. What happens if you connect an iPhone to that? will it charge faster? I guess that depends on if the iPhone is capable of drawing more than 1A to charge it.
I've not seen a "home" or AC charger that can charge the TB any faster than the Stock 1A charger. Does such a thing exist?
A proper car charger with 950mA to 1A output should charge the TB at almost exactly the same rate as the stock 1A wall/AC charger.
And btw, the Moto SPN5400A car charger DOES charge my TB in about the same amount of time that it takes me to charge my TB at home with the stock HTC charger. So while its not "rapid" compared to the stock home/travel/AC charger, its "rapid" compared to PC USB Port charging, or a plain lower current car charger.

KidJoe said:
I've not seen a "home" or AC charger that can charge the TB any faster than the Stock 1A charger. Does such a thing exist?
A proper car charger with 950mA to 1A output should charge the TB at almost exactly the same rate as the stock 1A wall/AC charger.
Click to expand...
Click to collapse
I made a charger for my motorcycle. I use it as a GPS, screen on MAX, phone active with marginal signal. And I wanted to actually charge the battery at the same time. I did a lot of experimenting with the Thunderbolt. It would not exceed a pull of about 850ma from the supply, even at 5.5 volts. IMHO, you are wasting time looking for any charger over 1 amp.
Also, even with about 850ma in, not much over 500ma is getting to the battery. So a totally dead battery is still going to take between 2 and 3 hours to charge, no matter what charger you have. And twice that long if the charger looks like a PC USB port.

worwig said:
I made a charger for my motorcycle. I use it as a GPS, screen on MAX, phone active with marginal signal. And I wanted to actually charge the battery at the same time. I did a lot of experimenting with the Thunderbolt. It would not exceed a pull of about 850ma from the supply, even at 5.5 volts. IMHO, you are wasting time looking for any charger over 1 amp.
Click to expand...
Click to collapse
I was asking because of the OP's statement about knowing "they must exist" because they are out there for the iPhone.
I'm perfectly happy with my Moto car charger, and how fast it charges my phones.

Automobile Quick Charging Solution

What is the best solution for quick charging the Galaxy Nexus in an automobile?

I have started to use 12-220 volt converter so I can use wall chargers.

I have bought a few of the low profile car usb chargers but they were never recognized as an AC charge. Come to find out, it was the USB cable. I bought a usb charging cable from Amazon last week and it goes in the USB charger and the phone does not think it is a USB charge. I have not timed it but it is recognized the same as the wall charger.
http://www.amazon.com/gp/product/B003VYBCAY

ellisz said:
I have bought a few of the low profile car usb chargers but they were never recognized as an AC charge. Come to find out, it was the USB cable. I bought a usb charging cable from Amazon last week and it goes in the USB charger and the phone does not think it is a USB charge. I have not timed it but it is recognized the same as the wall charger.
http://www.amazon.com/gp/product/B003VYBCAY
Click to expand...
Click to collapse
+1 .. this solution has been working great for me, as well.

I've been getting 2.1A car chargers (look for ones for the iPad), most of the ones I had prior to this were 700mA or so and they can't keep up with my 1A phones. Be careful of dual port chargers advertising 2A, they may only be 1A each and may be "optimistic" about that rating. And don't worry about getting one rated for too much current, the Galaxy Nexus won't pull more than an amp no matter what the charger rating.

Some really good solutions here and thank you all for the help.
I'd really hate to use an inventer in my car just to maintain a clean install, so that really isnt an option for me.
Was really hoping to be able to use a off the shelf car charger with the correct pins to trick the GNexus into thinking that it was charging from a USB port, but the above solution should work well with using a socket USB charger.

I've never run into a car adapter that looks like a USB port, including the VZW charger with a spare port or the cheap 2.1A chargers I got from Amazon. My guess is that a charger not built correctly and leaving the data pins open only supports ~500mA anyway. Even if that's not the case I have a moral objection toward buying a cable to fix a design flaw in another cheap product - but that's just me

Grant H said:
Some really good solutions here and thank you all for the help.
I'd really hate to use an inventer in my car just to maintain a clean install, so that really isnt an option for me.
Was really hoping to be able to use a off the shelf car charger with the correct pins to trick the GNexus into thinking that it was charging from a USB port, but the above solution should work well with using a socket USB charger.
Click to expand...
Click to collapse
I've got a charger similar to http://www.ebay.com.au/itm/USB-Car-...ccessories&hash=item4ab18358f4#ht_1638wt_1392
All I had to do was undo the screws at the top, put a bit of solder between the middle usb pins, and my phone recognises it as a AC source rather than USB.

There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA

Grant H said:
What is the best solution for quick charging the Galaxy Nexus in an automobile?
Click to expand...
Click to collapse
Make sure the charger has the IC (rapid) chip. I use this one:
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA

I've heard that Motorola one mentioned a lot as a good one.
The nice thing about having the low-profile usb plug is (a) it is low profile, (b) I can use it to charge other devices. The charge-only cable is only about $4, so I had no issues buying it to work with this to charge as an AC charge over a USB charge.

Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
I have this one and it charges just like it does from the home outlet and its says "AC" charging. I bought another 8 for family and friends and they all love it.

I think I've figured out the disconnect, I've run into chargers that appear as a USB host which limits the charging to 500mA on previous phones I've had.
You guys are concerned about USB vs. AC charging mode. Of the chargers I've got, this one lists as AC while the rest as USB. However, the fact that the other chargers all work just fine keeping up with GPS+streaming music indicates that the USB vs. AC really has no bearing on the charge current delivered. I'd stay away from charge-only cables just because they'll get mixed in with your standard USB cables and you'll knock yourself out wondering why they don't work. On the other hand, if you really want AC in your battery info order the one I linked.

I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App

TheKaz said:
I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
What's much more important is the rating on the power source. The GN can pull up to 1000mA, if your charger is only rated for 800mA (like many car chargers) it doesn't matter if it's in AC mode.

jdbower said:
What's much more important is the rating on the power source. The GN can pull up to 1000mA, if your charger is only rated for 800mA (like many car chargers) it doesn't matter if it's in AC mode.
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Click to collapse
makes sense.. the one I use has dual usb (1.0 and 2.1)

You went and gave me a project for the weekend, and once again science prevails over anecdotal evidence. I took each of my 5 chargers and hooked them up to a 12V power supply that measures current. I then recorded whether the charger reported AC or USB, for the ones with USB I modified a right-angle adapter to short out the data pins, and I measured the current. The contenders:
Verizon Wireless Dual Charger
XTG Dual Port Charger
Griffen Powerjolt Dual USB Charger
Griffen Portjolt Micro
CostMad Dual USB Charger
The VZW model was USB out the external port as I had tested before, however AC out the built-in cable which I hadn't bothered to test. It pulled 0.25A @12V via the USB port and 0.59A via the cable. Hmmm... A hole develops in my previous observation. While I had used this on a long car trip with no issues, it was via the built-in cable.
The XTG was new, I hadn't used it before as it's in the car I rarely drive. It reported USB and 0.22A. With the adapter to make it report AC it pulled 0.48A.
The pattern was set. I had expected the Griffen adapters to be built more appropriately but the dual charger reported 0.22A without the adapter and 0.42A with. I had used this without losing charge in the past so this was surprising to me, but it's possible I just wasn't drawing as much current because the screen was dimmer or something.
The compact Griffen adapter (which is great for a laptop bag, BTW) pulled 0.21A and 0.47A respectively.
The cheap CostMad adapter was the only one that performed well out of the box, both reporting AC and pulled 0.57A.
In theory, a perfect adapter should pull 0.42A. Anything more is waste, anything less means it's not keeping up. I have doubts about the Griffen 2x allowing for a full amp, but the VZW and CostMad chargers are pretty lossy. What's even worse is that I'm pretty sure the VZW charger is rated for 800mA (but I can't find an actual spec on it) which would mean that it pulled the most power for the least current. Not that this really matters unless you've got an electric car.
Sorry for misleading you earlier, I should have checked the other port of the known-good VZW charger and probably doublechecked the numbers on my other "known good" charger. Still hating cables that work for charging but not for data, I ended up modifying each of the chargers to short the middle pins (except for the VZW one). If I didn't have the soldering iron for this, I probably would have gone for some of these instead.

Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
CyberPunk7t9 said:
Make sure the charger has the IC (rapid) chip. I use this one:
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA
Click to expand...
Click to collapse
I'm using the same one and it works perfect. Charges even when GPS navigation is running.
Make sure you select Amazon as the seller though. I heard there are a lot of fake ones.

Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
+1 to those recommending this one. I have this exact model and it does indeed charge at the "AC" rate, about twice as fast as the "USB" rate.

TheKaz said:
I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
The Motorola one will charge even when using GPS. I have a friend I bought one for that uses his GPS all day and loves the Motorola charger.

Slow QI charging

Ordered a QI charger off Amazon (the same Lerway Chinese brand one everyone seems to get) and it's charging incredibly slow. Not sure if the app I'm using to record the charge rate is incorrect or I'm not reading it correctly but it says it's charging at only +200mA max sometimes as slow as <50mA.
Anyone else experience this?

skusa93 said:
Ordered a QI charger off Amazon (the same Lerway Chinese brand one everyone seems to get) and it's charging incredibly slow. Not sure if the app I'm using to record the charge rate is incorrect or I'm not reading it correctly but it says it's charging at only +200mA max sometimes as slow as <50mA.
Anyone else experience this?
Click to expand...
Click to collapse
What kind of power source you use to power the charger and what kind of cable do you use?
If you connect the charger to computer USB port it will not provide enough power for the charger. Same with cheap cables, like the ones mostly included with the generic QI chargers. You need a premium USB cable.
Also if you have a thick case on your phone it will diminish the charging current received by a coil in your phone.
Firstly check how much power and what current your charger gets, so instead of plugging the QI charger, plug your phone and check what amperage you get (I use Current Widget). If it's less then 1600mA (maximum amperage that N5 will allow from direct charging through cable) your charger is underpowered and you need to change socket charger to 2A one. If you're using 2A socket charger and still get under 1600mA then your micro USB cable isn't good enough.
Properly and fully powered Qi charger should charge your bare phone (without a case) at about 700-800mA.

Znamir81 said:
What kind of power source you use to power the charger and what kind of cable do you use?
If you connect the charger to computer USB port it will not provide enough power for the charger. Same with cheap cables, like the ones mostly included with the generic QI chargers. You need a premium USB cable.
Also if you have a thick case on your phone it will diminish the charging current received by a coil in your phone.
Firstly check how much power and what current your charger gets, so instead of plugging the QI charger, plug your phone and check what amperage you get (I use Current Widget). If it's less then 1600mA (maximum amperage that N5 will allow from direct charging through cable) your charger is underpowered and you need to change socket charger to 2A one. If you're using 2A socket charger and still get under 1600mA then your micro USB cable isn't good enough.
Properly and fully powered Qi charger should charge your bare phone (without a case) at about 700-800mA.
Click to expand...
Click to collapse
Thanks for the info I thought I was going crazy.
No case so that isn't an issue.
I have the phone connected direct to a 3A charger currently and am only getting 995mA charge rate with the screen on and it looks like full 1.5A with the screen off. Maybe a defective QI charger?

Nope. Everything is normal. You just need a better cable that will manage to transfer 2A of current.
QI charger needs 2A input to give 1A output on a coil. Giving about 70-80% efficiency rate, your phone would be getting about 700-800mA.
Since your charger gets only about 1A input it gives about 500mA output. Therefore giving that efficiency rate, your phone should be getting about 350-400mA tops. It is possible that your charger has lower efficiency rate (some have about 50-60%), so the values that you're getting are pretty normal unless you use a premium micro usb cable, preferably with thicker, like AWG24 or lower (the lower value the better) power wires.

Might want to try these cables, a lot of people have had great luck with using them on Qi chargers. Don't know which length you would need, they have 3 and 6 foot cables. For the price, I'm ordering 6 6ft cables.
http://www.monoprice.com/Product?c_id=103&cp_id=10303&cs_id=1030307&p_id=9762&seq=1&format=2

Xperia Z1 wireless charging?

I have a Xperia Z1 and I was wondering if it is equipped with any functions that enables wireless charging (QI-enabled something)?
Tried googling but found no results other than some news on Xperia Z..
On the other hand, if Xperia Z1 does have it, is it possible to buy any wireless charging pad from ebay and charge it?

Don't know about it,too, but I dug into that tech a while ago in orderto know about pros and cons.
I have to admit, it's a convenient technology to just lay your mobile onto that charger and get it charged.
But there are two big disadvantages from my point of view:
Low efficiency - the induction tech used has a small efficiency, so there's a big loss of energy
Low charging power - the charging rate that is possible with the current tech is rather low, it takes AGES to have your phone fully charged, and I even read about people not getting any extra fuel because they used the phone during charge.
Personally speaking I like the magnetic charger plug for our phone a lot more, because it has hardly any loss and just takes a second to attach it, needing no closing of flaps upon removing.
Just my 2 cent

husky69 said:
Don't know about it,too, but I dug into that tech a while ago in orderto know about pros and cons.
I have to admit, it's a convenient technology to just lay your mobile onto that charger and get it charged.
But there are two big disadvantages from my point of view:
Low efficiency - the induction tech used has a small efficiency, so there's a big loss of energy
Low charging power - the charging rate that is possible with the current tech is rather low, it takes AGES to have your phone fully charged, and I even read about people not getting any extra fuel because they used the phone during charge.
Personally speaking I like the magnetic charger plug for our phone a lot more, because it has hardly any loss and just takes a second to attach it, needing no closing of flaps upon removing.
Just my 2 cent
Click to expand...
Click to collapse
I have a n4 as well. Charge time is marginally longer/slower. The info you have read is incorrect based upon my and other users that have used wireless charging.
Sent from my C6916 using XDA Free mobile app

Thanks guys. I do own the magnetic cable (dismantle it for the cable), however it is a nuisance that the magnetic cable only works with the charger adaptor and not with the PC..
Been trying to find alternative ways to get my phone charged other than opening the flaps and I thought wireless charging may be a better idea

Salik89 said:
Thanks guys. I do own the magnetic cable (dismantle it for the cable), however it is a nuisance that the magnetic cable only works with the charger adaptor and not with the PC..
Been trying to find alternative ways to get my phone charged other than opening the flaps and I thought wireless charging may be a better idea
Click to expand...
Click to collapse
I use my magnetic cable to charge the phone via laptop and it works..not sure why not for u

ravi_buz said:
I use my magnetic cable to charge the phone via laptop and it works..not sure why not for u
Click to expand...
Click to collapse
Really? Mine does not seems to be reading it, whether I plug it into my laptop/Desktop/Monitors
Is rooting requires for it to happen?

Salik89 said:
Really? Mine does not seems to be reading it, whether I plug it into my laptop/Desktop/Monitors
Is rooting requires for it to happen?
Click to expand...
Click to collapse
Nope. Mine is stock. infact magnetic charger seems to charger at a faster rate for me from Laptop

I have 2 of the magnetic cables: one is original from the sony DK-31 dock and the other from japan. Although the both look identical to one another, they function differently.
The original one doesn't charge from a laptop and has to be used with an adapter
The generic one charges from a laptop and can be used with an adapter, however in a laptop it charges significantly slower. Has to charge all night and it still won't be a complete full charge in the morning - it will be close to full.

1.) The Z1 does not have any sort of wireless charging built in.
2.) The Z1 will charge via PC USB connection, however the output of the USB cable varies based on the standard.
** USB 2.0 can charge at a rate of up to 750mAh with concurrent data transmission. Without data, the charge rate maxes out at 5A at 5V.
** USB 3.0 can charge at a rate of up to 900mAh with concurrent data transmission. Without data, the charge rate maxes out at 5A at 5V.
** USB 3.1 can charge at a rate of up to 900mAh with concurrent data transmission. Without data, the charge rate maxes out at 2A at 5V and up to 5A at 12V or 20V.
3.) Qi wireless chargers are slower than wall chargers as well. A typical Qi wireless charger transmits power at a rate of 750mAh at 5V.
To put this all in perspective, the standard wall charger that comes with the Z1 charges over USB 2.0 at a rate of 1.5Ah at 5V.
A PC USB connection will typically be 50% slower at charging than the stock wall charger for the Z1.

Thanks all for the reply. Yup, my cable is inded the one from the Sony Charging Dock and hence it does not seems to be working with the computers unless it is paired with the adaptors.
At least now I know that Xperia Z1 does not comes with wireless modules.. Keep hoping that it may have.

Salik89 said:
Really? Mine does not seems to be reading it, whether I plug it into my laptop/Desktop/Monitors
Is rooting requires for it to happen?
Click to expand...
Click to collapse
Mine doesnt do it either.
I removed the cable from the original sony dock.
3rd party adapters work plugged in to the computer..
weird!

So back to QI Charging...
Is there already any Case out there for the Z1?

Keichi-chan said:
So back to QI Charging...
Is there already any Case out there for the Z1?
Click to expand...
Click to collapse
Not that I know of..

No definitely not.
Sent from my Nexus 7 using Tapatalk

Is QuickCharge 2.0 working with magnetic cable?

Hello friends,
I've bought an Aukey QuickCharge 2.0 (Qualcomm) Car Power Adapter and want to use it with a magnetic cable (original Sony).
Someone know, is this a good combination / is this working?
Regards, Chris
Sent from my Xperia Z3 Compact using Tapatalk Pro app.

I have an Aukey QuickCharge 2.0 wall plug. When using a USB cable it appears to charge quicker than when using a magnetic cable (after market). The USB cable is higher gauge than the magnetic cable so that could be why. However, I do not think QuickCharge works on the magnetic connector. That being said the Aukey QuickCharge 2.0 does have a higher current and can charge non QuickCharge devices faster than the regular adapter. So I think you will notice it charge faster using the Aukey QuickCharge adapter and the magnetic cable versus a regular adapter, but not as fast as using a USB cable with the Aukey QuickCharge adapter.

dhchris said:
Hello friends,
I've bought an Aukey QuickCharge 2.0 (Qualcomm) Car Power Adapter and want to use it with a magnetic cable (original Sony).
Someone know, is this a good combination / is this working?
Regards, Chris
Sent from my Xperia Z3 Compact using Tapatalk Pro app.
Click to expand...
Click to collapse
yes, works very well for me. I use the same and it goes from under 10% to over 50% in 40 minutes. I slows down a bit after that, and the closer to 100% it gets the slower the charge.
You should be able to get from 0% to 100% in a little over two hours. The reason I bought a Q 2.0 charger is that it negotiates with the phone to get the best rate of charge, so even though it's super fast charging, the phone doesn't even get warm. It worries me when I plug my phone in somewhere I I feel it getting hot, it can't be good for the battery.

I recently bought a Quick Charge 2.0 adapter and can tell you that it made no difference to my charging times. Whether it's the standard charger that came with the Z3C, the Quick Charge 2.0 adapter, usb charging, or magnetic charger, my phone charges at about 1% per minute with any of those combinations.
Supposedly QC2.0 can charge up to 60% in 30 mins, or 2% per minute, i.e. twice as fast as a regular charger, but I didn't get close to that. I had a friend test my QC2.0 adapter on his LG G4 and it charged from 0 to 75% in 30 mins, so I'm guessing QC2.0 isn't active or doesn't work on the Z3C, at least on mine anyway.

Didgesteve said:
yes, works very well for me. I use the same and it goes from under 10% to over 50% in 40 minutes. I slows down a bit after that, and the closer to 100% it gets the slower the charge.
You should be able to get from 0% to 100% in a little over two hours. The reason I bought a Q 2.0 charger is that it negotiates with the phone to get the best rate of charge, so even though it's super fast charging, the phone doesn't even get warm. It worries me when I plug my phone in somewhere I I feel it getting hot, it can't be good for the battery.
Click to expand...
Click to collapse
+1 , my phone like that too, I use 2A sams*** adapter

Didgesteve said:
yes, works very well for me. I use the same and it goes from under 10% to over 50% in 40 minutes. I slows down a bit after that, and the closer to 100% it gets the slower the charge.
You should be able to get from 0% to 100% in a little over two hours. The reason I bought a Q 2.0 charger is that it negotiates with the phone to get the best rate of charge, so even though it's super fast charging, the phone doesn't even get warm. It worries me when I plug my phone in somewhere I I feel it getting hot, it can't be good for the battery.
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Thanks, you have solved my question aahahha

With the magnetic does not exactly work.

I thought that for Quickcharge the data lines of the USB cable have to be used, because the CPU needs to communicate with the power supply for switching to QC 2.0. Right or wrong?!
And the magnetic cable doesn't provide any data lines

i just replace my z3 compact battery it turns on but won't charge... how i can made the unit charge again please help... the battery is ok...