Hi I am very tempted to purchase a wireless charger to use with my wonderful nexus 4, however I have a few questions. Firstly does it charge the phone to 100%? I've heard people saying that it stops at 80%. Secondly what is the wireless charger wake lock in 4.3 people have been talking about? Thirdly can anyone recommend a cheapish wireless charger that I can easily purchase in the UK? I would appreciate anyone with a wireless charger to answer with there views. Sorry if this has already been asked I did search but I couldn't find a thread that answered my questions. Thanks in advance
I'm using a Nokia DT-901 wireless charging stand and although its not that cheap (£50) the Nexus fits on it perfectly, it charges to 100% and you can see the screen better when it sits on the stand.
After looking at what you said the nokia DT 900 looks very tempting for £20 less. What are the differences between the 900 and 901?
I have those cheap eBay qi charger.. Charges my phone 100%...
Nexus 4 - PA rom and franco kernel
gd6noob said:
I have those cheap eBay qi charger.. Charges my phone 100%...
Nexus 4 - PA rom and franco kernel
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Hi!
Do you have THIS CHARGER?. Or something like that?
This is the one I have...
http://www.amazon.ca/Position-Inductive-Wireless-Qi-enabled-Charging/dp/B00D8XKPRE/ref=sr_1_12?ie=UTF8&qid=1382043826&sr=8-12&keywords=qi+charger
To answer your first two questions:
1. I believe it depends on your wireless charger as to how it behaves. The one I've got charges to 100% and then will continue to check the status of charge and essentially continue to trickle charge after hitting 100% so that it stays around that level. I have heard of people saying that once theirs charges to full the charger "turns off", and doesn't keep the battery at "full".
2. As I understand it, the wakelock is to do with a process that runs in the background searching for the wireless charger. It doesn't allow the phone to fully go into deep sleep and thus the battery drains pretty quickly. It's the reason I haven't used my wireless charger in a while - I couldn't be bothered rebooting my phone to kill the process most days.
As for cheap wireless chargers in the UK I can't really answer as I don't live there.
Hope that helps.
Hi, I noticed that my Nexus 4 charger pretty slow so I decided to check this out.
i've been doing a lot of reading here but couldn't figure out the problam.
I'm using the original charger (lg's 5v 1.2a) but charge speed is around 300-400ma (checked with battery monitor widget), with short peaks around the 600-700ma.
I tried the galaxy nexus charger (5v 1a) with both the samsung cable and the lg.. got around 850ma which is slighty lower than expected.
decided to give it a try with a friend's nexus 5 charger (1.2a) but also got only ~850ma at the most.
So I think my charger doesn't work like it should, but can't seem to figure out why other chargers won't charge full speed.
(I'm running rooted kitkat 4.4 if that's relevant to the matter).
Does anyone has any idea what could be the problem?
Thank you!!
I've never seen a full 1200mAh charge no matter what cable/charger combo I use. Closest I can recall seeing is high 900's using battery monitor widget pro.
It's possible that the charge rating I am seeing is taking into account the drain as well from using the phone. So it could be around +1200mAh but with screen on and the apps that I have running + other services (wifi, bluetooth, etc), that it is only doing around +800mAh in terms of charging the battery.
goofball2k said:
I've never seen a full 1200mAh charge no matter what cable/charger combo I use. Closest I can recall seeing is high 900's using battery monitor widget pro.
It's possible that the charge rating I am seeing is taking into account the drain as well from using the phone. So it could be around +1200mAh but with screen on and the apps that I have running + other services (wifi, bluetooth, etc), that it is only doing around +800mAh in terms of charging the battery.
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My Gnex charges at a little over 1000ma (with the samsung 1a charger - same charger that gives my nexus 4 ~850ma)
Nexus 5 got 1070 max with its' 1.2a charger.... both messured with battery monitor widget.
Could the N4 charge be limitted to 900ma?
Any chance my connetcor or battery need fixing?
anybody has any idea what could be the problam?
I just installed a QI charger for my new LG G2. I got a few QI charging pads as well. I want to see how fast it is charging, or the charge rate (500mah, 750? ect) as the receiver is supposed to do the following charge: DC 5V/500mA-1000mA .
Ive tried a few apps, but I cant find one that specifically says what the charging rate is. Anyone know the best way to figure that out?
Two questions:
1) When you say you "installed a QI charger for my new LG G2" exactly what do you mean there, and I do mean exactly: are you referring to getting a Qi charging pad (which you mention) or do you mean you got some kind of part that you physically installed in or on your G2 - the Verizon G2 is the only one that supports wireless charging out-of-the-box so, that's why I'm asking.
2) With respect to actual charging, the output of the Qi wireless charging pad is directly related to the amperage/current supplied by the actual AC adapter or USB charger you're using with it. If it's about 1A (the AC or USB charger) then you're going to lose quite a bit of power in the actual charging process because wireless charging is pretty severely inefficient most of the time, give or take you'd get 400 to 500mAh going into the actual device from the charging pad.
What I'm saying is if you have a Qi wireless charging pad, you'd be best served using as high an amperage/current charger for the pad itself so that the pad can then transfer as much as possible to the device itself. Anything less than a solid 2A charger attached to the Qi wireless charging pad and you're basically wasting a lot of it in the process and might be better off actually just using the USB port on a computer or something (about 500-550mAh max anyway).
Basic rule of thumb: the Qi wireless charging pad can use all the amperage/current it can get, with at least the factory LG 1.8A charger being what I'd call the bare minimum (and with that you'd probably be able to push about 900 to 1000 mAh (aka 1A) to the device. Qi hardware is roughly 40% efficient so, you're going to lose a lot in the process as stated; the more you start with the more that gets to the device even accounting for the inefficiency.
As far as measuring the current, you can try CurrentWidget on the Play Market, it may provide you with some info in terms of the charging rate.
br0adband said:
Two questions:
1) When you say you "installed a QI charger for my new LG G2" exactly what do you mean there, and I do mean exactly: are you referring to getting a Qi charging pad (which you mention) or do you mean you got some kind of part that you physically installed in or on your G2 - the Verizon G2 is the only one that supports wireless charging out-of-the-box so, that's why I'm asking.
2) With respect to actual charging, the output of the Qi wireless charging pad is directly related to the amperage/current supplied by the actual AC adapter or USB charger you're using with it. If it's about 1A (the AC or USB charger) then you're going to lose quite a bit of power in the actual charging process because wireless charging is pretty severely inefficient most of the time, give or take you'd get 400 to 500mAh going into the actual device from the charging pad.
What I'm saying is if you have a Qi wireless charging pad, you'd be best served using as high an amperage/current charger for the pad itself so that the pad can then transfer as much as possible to the device itself. Anything less than a solid 2A charger attached to the Qi wireless charging pad and you're basically wasting a lot of it in the process and might be better off actually just using the USB port on a computer or something (about 500-550mAh max anyway).
Basic rule of thumb: the Qi wireless charging pad can use all the amperage/current it can get, with at least the factory LG 1.8A charger being what I'd call the bare minimum (and with that you'd probably be able to push about 900 to 1000 mAh (aka 1A) to the device. Qi hardware is roughly 40% efficient so, you're going to lose a lot in the process as stated; the more you start with the more that gets to the device even accounting for the inefficiency.
As far as measuring the current, you can try CurrentWidget on the Play Market, it may provide you with some info in terms of the charging rate.
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Firstly, thank you for taking time to write such a great response. I really appreciate it!
1) Yes I installed a universal sticker. I used this one http://www.amazon.com/gp/product/B00MN3RR7Q/ which is supposedly supposed to do 1000mA. People in the reviews seem to say they are getting good results. I wish the ATT version had wireless out of the box, but then if it did I would be stuck with PMA charging. I installed an actual NFC/PMA sticker in my G3. PMA kind of sucks...anywho.
2) This is the pad I am using: http://www.amazon.com/gp/product/B00H9B7ALK/. 1.5a input and 1a output. On this one, I am averaging about 3% per 10 minutes or 30% an hour. So roughly 3 hours and 20 minutes to full charge. I can try the the stock LG. Oh, my Dell Venue 8 Pro is a 2a one. I can try that as well. Can the paid take the 2a in even though it was built for 1.5a in?
I will try current widget. Ive been using battery monitor to log as well.
1) Neat, I didn't even know such a thing existed, I may have to give that a shot with my G2 at some point (if I decide to keep it, that is).
2) As stated before, using a higher amperage/current charger or power supply is preferred, sure. It should help get the charging done faster and again the device (meaning the charger) will pull what it requires and nothing more.
Basic electronics 101 here: two things that matter with respect to smartphone chargers (or most any device, to be honest) - amperage aka current and voltage.
Voltage is pushed from a power supply meaning it will always be the same amount, give or take micro-variations. If it's a 5VDC power supply (of any kind) it's designed to provide 5VDC constantly. If it's some other value, say 9VDC, 12VDC, and so on, that's how much it pushes - if you were to connect a 9VDC charger to a smartphone or other device that's designed for a 5VDC input, you'd fry the electrical circuits in the device because it would be flooded with more power than it's designed for.
Amperage aka current is pulled from a power supply and only what is required is what's actually taken. With respect to smartphones, most of the higher end devices these days can make use of roughly 1.2 to 1.8 A (read as Amps) when it comes to charging. This means if you had a charger that output 5VDC (from what I just said above that's the standard worldwide for such devices as smartphones) but could theoretically provide 5A of current, the smartphone technically would not be damaged because it would only pull roughly 1 to 1.8 Amps at most - if you do use CurrentWidget and you plug in the G2 and look at the reading while it's charging, you'll note that the level of amperage/current being pulled from the charger fluctuates like crazy - voltage stays constant (give or take a microvolt here and there) but the current will jump all over the place, especially if you enable the "Smart Charging" feature of the G2.
The reason this happens is because when a LiIon battery is pretty low on a charge, say down to 10-15%, it's "gone deep" as the saying goes and the charging circuit will pull the max amperage/current that the charger is capable of producing and that can be measured/seen using CurrentWidget. As the battery gets into the 90% full range, the amperage/current draw will reduce (again, especially with the Smart Charging enabled) as the battery gets towards being totally full. This is a good thing in most every respect and it keeps the LiIon battery in good shape too - if it pulled the max current till it was 100% it wouldn't necessarily be so good and would heat the battery up more than necessary and LiIon batteries are very sensitive to temperature variations.
Hence, phones get fried by "cheap Chinese chargers" a lot of times because of voltage issues and faulty voltage regulators, not from amperage/current problems. It's actually kind of difficult to kill a device with amperage/current, but screwing around with the voltage will destroy a device almost 100% of the time and quite fast too.
Also, this is the reason why you'll see a phone charge relatively quickly to the 99% point then it seems to take even longer to get that last 1% to finish it off at 100% - it's the way LiIon charging technology works and helps the battery lifespan (meaning how long the battery is useful for measured in years and not "battery life" in terms of how long it can run before you have to charge it again measured in hours). The charging process "slows down" as it gets close to being full which works great for this kind of technology.
Hope this info helps...
br0adband said:
Basic rule of thumb: the Qi wireless charging pad can use all the amperage/current it can get, with at least the factory LG 1.8A charger being what I'd call the bare minimum (and with that you'd probably be able to push about 900 to 1000 mAh (aka 1A) to the device. Qi hardware is roughly 40% efficient so, you're going to lose a lot in the process as stated; the more you start with the more that gets to the device even accounting for the inefficiency.
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Okay let me see if I understand this correctly. The OUTPUT of the qi charging pad could be 1000mAh, but since the wireless QI hardware is only 40% efficient, the actual charge rate will be more around mAh to 500mAh? Im recording an actual charge rate of 500mAh and my phone states it is on AC power and not USB.
If the receiver on the phone states it can do up to 1000mAh, what I need to find is a charger that outputs a lot more like 2000mAh and at 40% efficiency I might be able to get around the 1000mAh?
That pretty much sums it up, yep - as long as you account for the inefficiency of the Qi charging technology, you can get faster charge times and still use it without having to plug in/unplug, etc the old fashioned way.
It works, it's just not nearly as fast or efficient as the old fashioned way so, give the Qi pad plenty of current and you'll be fine - since it will pull what it needs, using a 1.8A or 2A or even more won't hurt it, but it will make it pretty damned warm to the touch when it's charging so keep that in mind. As the G2 would be sitting on top of the Qi pad, if the pad gets warm or even hot then obviously the G2 will as well by heat transfer and heat/high temps are bad for LiIon batteries as I mentioned earlier.
It's a trade-off more than anything else but again, it does work as long as you're understanding the hows and whys to make the best of it.
br0adband said:
That pretty much sums it up, yep - as long as you account for the inefficiency of the Qi charging technology, you can get faster charge times and still use it without having to plug in/unplug, etc the old fashioned way.
It works, it's just not nearly as fast or efficient as the old fashioned way so, give the Qi pad plenty of current and you'll be fine - since it will pull what it needs, using a 1.8A or 2A or even more won't hurt it, but it will make it pretty damned warm to the touch when it's charging so keep that in mind. As the G2 would be sitting on top of the Qi pad, if the pad gets warm or even hot then obviously the G2 will as well by heat transfer and heat/high temps are bad for LiIon batteries as I mentioned earlier.
It's a trade-off more than anything else but again, it does work as long as you're understanding the hows and whys to make the best of it.
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I ran the battery down to 70% and I have it on the charger with a 2a wall adapter. I will see how fast it charges. But it seems like I will get roughly 1/3rd the charging speed of a wall adapter. Which means in the car using gps with the screen on and QI chrarging will probably mean a negative overall power situation.
Im also going to try a high speed, charging only cable like this http://www.amazon.com/gp/product/B009W34X5O/ between the wall adapter and the charging pad to see if there is any difference.
Don't waste your money, that thing is no better than a "Gold Plated 56K Modem Cord," seriously. Gold plating, "high speed," all that stuff is marketing BS and means absolutely nothing in the long run - it's a microUSB cable, nothing more.
In 20+ years of using USB cords of all kinds I've yet to see one that's corroded so, that gold plating is not gonna matter anyway.
Any microUSB cable you can find today is more than capable of handling ~2A without a single issue and it's well known that the G2 can max out at 1.6A draw for charging anyway so any cable is more than adequate for doing it.
br0adband said:
Don't waste your money, that thing is no better than a "Gold Plated 56K Modem Cord," seriously. Gold plating, "high speed," all that stuff is marketing BS and means absolutely nothing in the long run - it's a microUSB cable, nothing more.
In 20+ years of using USB cords of all kinds I've yet to see one that's corroded so, that gold plating is not gonna matter anyway.
Any microUSB cable you can find today is more than capable of handling ~2A without a single issue and it's well known that the G2 can max out at 1.6A draw for charging anyway so any cable is more than adequate for doing it.
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Hah! I already have one I use in the car
shaxs said:
I ran the battery down to 70% and I have it on the charger with a 2a wall adapter. I will see how fast it charges. But it seems like I will get roughly 1/3rd the charging speed of a wall adapter. Which means in the car using gps with the screen on and QI chrarging will probably mean a negative overall power situation.
Im also going to try a high speed, charging only cable like this http://www.amazon.com/gp/product/B009W34X5O/ between the wall adapter and the charging pad to see if there is any difference.
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Okay I was able to maintain neutral power with the screen on and running gps. Let it go for almost 2 hours and it was at the same percentage as when I started. Im good with that for car use.
I got a original charger and was wondering if it's safe to use it on a LG G3 or Galaxy s4 since it's higher voltage?
unless youve been messing with fastcharge settings, it shouldnt hurt it. usb only provides the amount of power the device requests during the handshake (if properly implemented and not a cheap chinese passthrough charger)
He said he will use his wall charger and no USB connection while he is charging. So fast charge is out in this case. When he uses his USB cable plugged in the charger there will be no data connection.
From my side I would say it is safe. Due to the higher output current from the charger the phone will charge faster. That's all.
Tablets have got batteries with much higher capacity compared to mobile phones. To provide a equal charging time they come with charger that provide higher charging currents.
Sent from my Nexus 7 using XDA Free mobile app
*Deleted*
They didn't disable anything - it doesn't have the Qualicom Quick Charge variant, but it does have it's own variant of a rapid charge.
Using two wall chargers I have here and a Benson certified USB-C Cable, one of the wall chargers support QC2.0 and the other QC3.0. Both charged "normally" reporting on the screen as "Charging".
Using the stock USB-C wall charger that came with my 6P, using EX Kernel and the stock kernel from January 8.1 stock ROM, both reported "Charging Rapidly". I switched kernels using EXKM and a backup of the stock Kernel to test this.
Also, I bought a Tronsmart USB-C Car Charger, and it too reports "Charging Rapidly".
ZuneYT said:
Hey everyone,
So I got my nexus 3 Months ago, I just found out NOW that it is not fast charging at all. I bought a new ANKER charger and wire with it and its just charging slowly which got me really annoyed as I wasted money on it because I thought it had nothing to do with the phone at all. I did some digging around and the maker of franco kernel found out that bloody google disabled the bloody fast charging on the 6P?! What kind of solution is that? I mean they could of at least gave us options on whether to disable or enable it in the phone. Is there ANY way to get fast charging enabled on this phone?
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Nexus 6p just charges at a higher amperage then most average phones. As long as you use a charger with 5V/3A you should get charging rapidly. Just remember as the battery percentage increases the amps get lower. Use an app like ampere to make sure your getting close to 3000mA. I think the highest charge I seen on the stock plug was like 2800mA.
Well I bought an ANKER Charger and usb cable with it which definitely says it is fast charging compatible. When it comes to charging my phone I got a small text on my lock screen showing me how much charge there is going to the phone while charging. The average charging mAh is 1,400 and the voltage is 4.3V. I am pretty sure that it has reached a higher charge rate....I'll have to keep an eye on it. Do you think thats an acceptable charging rate?
It's not just about amperage, because some of their chargers are a whopping 8A - https://www.anker.com/ca/products/108/203/Wall-Chargers
Anker doesn't support the variant of rapid charging that the 6P accepts, therefore it only will negotiate down to a normal "charging" rate, which IIRC is exactly what you're getting.
ZuneYT said:
Well I bought an ANKER Charger and usb cable with it which definitely says it is fast charging compatible. When it comes to charging my phone I got a small text on my lock screen showing me how much charge there is going to the phone while charging. The average charging mAh is 1,400 and the voltage is 4.3V. I am pretty sure that it has reached a higher charge rate....I'll have to keep an eye on it. Do you think thats an acceptable charging rate?
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That's kind of low this one from the comments works. Sorry it's Canadian amazon but maybe can find in your are.
Exodusche said:
That's kind of low this one from the comments works. Sorry it's Canadian amazon but maybe can find in your are.
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Well good news I found the plug from my past orders I just forgotten to look on my account haha.
This is it here https://www.amazon.co.uk/gp/product/B017VXARME/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
ZuneYT said:
Well good news I found the plug from my past orders I just forgotten to look on my account haha.
This is it here https://www.amazon.co.uk/gp/product/B017VXARME/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
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Noice yeah Amazon is good that way!! ?
I'm having this problem too. I used to be able to rapid charge using anker usb c to usb c but now it just seems to charge normally not rapid charge.
Anyone know of a fix, let me know.
Thanks