Do any of you have an issue where the phone screen turns on and off (and beeps) when it reaches 100% charged using a Qi charger? I am using the official Samsung wireless back cover with a Nokia Qi charging pad. When the phone reaches Charged, it will turn the screen on, then it'll say Charging Wirelessly 100%, then it'll turn the screen off and start charging... and the cycle repeats every 20 second or so. Anyone else?
I think it is standard glitch on all Samsung phones. The same thing happened with my old Note II, and it happening with my Note IV too. I have to shift phone maybe 1" off center so it would not make that noise.
Yes, I turn off notification and system sounds at night while charging with Tasker, and I use Gentle Alarm to display a dim clock so I don't get the screen flashing.
Thanks for the quick reply! Now I know that it isn't just my phone or charger, I can rest easier and just let it be (mostly will just take it off stand when charged).
My Note 4 is using S-View cover with wireless receiver built in + OEM Samsung Wireless Charger Pad (the big one) & I never experience your problem.
It only shows "Charged" once then fall asleep again until I turn it on.
this is correct if the note 4 is not properly centered ona single coil charger. upgrade to a 3 coil or center the charger coils with the base.
it takes place because the signal to cut off the charger at 100% is not properly received by the charger base so the charger keeps charging. the note 4 assumes the sginal sent will cut off charging and goes into a no charge state. then when current keeps flowing through the coils it wakes up and issues a no charge command again...which is again lost because the coils are too far apart. and the cycle repeats.
solution is to switch to a 3 coil charger or align the coils with each other.
zurkx said:
this is correct if the note 4 is not properly centered ona single coil charger. upgrade to a 3 coil or center the charger coils with the base.
it takes place because the signal to cut off the charger at 100% is not properly received by the charger base so the charger keeps charging. the note 4 assumes the sginal sent will cut off charging and goes into a no charge state. then when current keeps flowing through the coils it wakes up and issues a no charge command again...which is again lost because the coils are too far apart. and the cycle repeats.
solution is to switch to a 3 coil charger or align the coils with each other.
Click to expand...
Click to collapse
Is there a way to find out how many coils in my charging pad?
My Z3 was working fine with the magnetic charger for about 2 weeks. After that it just wouldn't connect like how it used to. Now, I'll have to adjust the magnetic charger to a certain angle for it to charge. why is this happening?
It would just snap into place and start charging, but now it only charges if i adjust it to a certain angle (by raising the port slightly higher after snapping into place)
lego232 said:
My Z3 was working fine with the magnetic charger for about 2 weeks. After that it just wouldn't connect like how it used to. Now, I'll have to adjust the magnetic charger to a certain angle for it to charge. why is this happening?
It would just snap into place and start charging, but now it only charges if i adjust it to a certain angle (by raising the port slightly higher after snapping into place)
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Click to collapse
What kind of magnetic charger do you use, do you have protective case on...those are essential things when you even think of asking questions or for help...
Hi, I would like to ask you, what is your experience with that cheap S4 Qi receiver pads (for example from ebay...). Is it charging fast? How much is cover bulged? Is it dangerous for the battery?
Thank you very much for sharing your experience.
It does make the back cover bulge a bit but it's not bad.
The phone gets warm when charging wirelessly but it's not too bad at all.
Sometimes, the charging pad will detect the receiver but the phone doesn't charge. If I remove the phone from the charging pad for a few minutes and put it back, it will start to charge.
Charging wirelessly is not as fast as using a wired charger and I would say it takes about 30 to 50 percent longer.
audit13 said:
It does make the back cover bulge a bit but it's not bad.
The phone gets warm when charging wirelessly but it's not too bad at all.
Sometimes, the charging pad will detect the receiver but the phone doesn't charge. If I remove the phone from the charging pad for a few minutes and put it back, it will start to charge.
Charging wirelessly is not as fast as using a wired charger and I would say it takes about 30 to 50 percent longer.
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Click to collapse
Thank you for response. Is NFC working with that Qi pad?
I have never used nfc on my phone but I know you can get pads that do support nfc as an option.
Hi there
I have a qi receiver on the S4. My one has input: "self-adaptation" (whatever that means) and an output of 600mah. It charges at a decent speed. I use the LG G3 wireless charger and a few other wireless charging pads and they seem to charge at a decent speed. A full charge takes about 3 hours.
The cover does bulge a tiny bit, but it is barely noticeable trust me- definitely worth it.
The phone only gets a little warmer- again nothing to worry about for sure.
I am certain that it doesn't do any damage to the phone and battery. I have using wireless charging overnight everyday for the past few years on the S4 and nothing has gone wrong. I rarely use cable charging anymore
I recommend getting a qi receiver for the S4- it is worth it.
Has anyone found a Qi charging receiver so thin that it doesn't bulge at all?
Apad121 said:
Hi there
I have a qi receiver on the S4. My one has input: "self-adaptation" (whatever that means) and an output of 600mah. It charges at a decent speed. I use the LG G3 wireless charger and a few other wireless charging pads and they seem to charge at a decent speed. A full charge takes about 3 hours.
The cover does bulge a tiny bit, but it is barely noticeable trust me- definitely worth it.
The phone only gets a little warmer- again nothing to worry about for sure.
I am certain that it doesn't do any damage to the phone and battery. I have using wireless charging overnight everyday for the past few years on the S4 and nothing has gone wrong. I rarely use cable charging anymore
I recommend getting a qi receiver for the S4- it is worth it.
Click to expand...
Click to collapse
Is it today something better what can more than 600 mA ?
Can you recommend something good ?
I can tell you the one from Aukey, although it uses a flat printed circuit coil, bulges a lot. Enough I didn't want to use it. It was advertised as being "ultra slim 0.2mm", but when I measured it with calipers, it's more like 0.9mm. The ferrite pad on it is most of the thickness.
No Bulge
GnatGoSplat said:
Has anyone found a Qi charging receiver so thin that it doesn't bulge at all?
Click to expand...
Click to collapse
The Fone Salesman S4 SlimPWRcard does not bulge at all.
hi, I'm dealding with an S6 G920F with charging problem ( Charging paused. Battery temperature too low)
I looked around but i didn't found any real fix, some says it's the battery , some the usb flat, some the mobo.
Now, does anybody know where the battery thermal sensor is located? on the charging board like old S4 or it's on the battery circuit?
thanks
it is on charging port
[email protected] said:
it is on charging port
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Click to collapse
Even a damaged charging port jack can cause this too, just an FYI.
Hi I bought 2 keyboard folio from eBay brand new but it is like it haves a faulty battery. When I try to pair it with the tablet through NFC I press yes on the "do you want to pair the Nexus keyboard" but after some seconds it fails. But when I put the keyboard to charge it works. After I pair the devices and use the keyboard when I unplug it it stops working straight away. So I was wondering if this happened to anyone else and if it is any key combinations to hard reset the keyboard or something like that?
More people having the same issue!!!!!!!!
https://productforums.google.com/fo...ce=footer#!msg/nexus/miyKVULMUWo/7vH_5T0OGwAJ
Sent from my Nexus 9 using XDA-Developers Legacy app
Has anyone found a way to replace the battery or fix the charging issue, battery not charging?
Has anyone tried using a portable external battery charger to power the keyboard, how long does it last?
Until you unplug the external battery.
Sent from my HTC 10 using XDA-Developers Legacy app
I opened the keyboard and the battery seems to be dead because I tried to charge it with another charger and nothing was happening. On the keyboard I put another battery 400mah but still wasn't charging so I thing the board is faulty too. I will take a picture of the battery and upload it because I tried to find one but I couldn't.
Sent from my HTC 10 using XDA-Developers Legacy app
vincenzo697 said:
I opened the keyboard and the battery seems to be dead because I tried to charge it with another charger and nothing was happening. On the keyboard I put another battery 400mah but still wasn't charging so I thing the board is faulty too. I will take a picture of the battery and upload it because I tried to find one but I couldn't.
Sent from my HTC 10 using XDA-Developers Legacy app
Click to expand...
Click to collapse
Please upload any pictures you can, would be really helpful.
I was considering buying a simple small portable battery charger 1500-2200-4000~ and using it, but it would discharge too quickly, attempting to charge the faulty one in the folio. Also considered taking the folio battery/charging component and splicing in portable battery charger..
Another option I thought of, is using a male to male micro usb cable from the Nexus 9 to the folio.
I am using a generic micro usb charger works fine. I also bought a male to male micro usb cable attached to the Nexus 9 and folio, also works great. The keyboard hardly registers drawing any power.
Sorry for the late reply. That's the original battery of the keyboard which i tried to find but couldn't. The hard part is that it needs to be 1.5mm to 2mm of thickness Max so the keyboard top part can close normally. The other pictures is the modification I made replacing the battery but with a thicker one. It wasn't charging so that's why I came to the conclusion that it must be the board too that it is faulty. I connect the - and + cables from the charger to the exposed cables to charge the battery and that's it.
Sent from my HTC 10 using XDA-Developers Legacy app
That's a lot of hardware. So the battery may be good and its the charger that's faulty. Thanks for the images!
clockcycle said:
That's a lot of hardware. So the battery may be good and its the charger that's faulty. Thanks for the images!
Click to expand...
Click to collapse
NO. The battery too is faulty. Because I connect it straight to the charger and it doesn't charge.
Maybe?
vincenzo697 said:
NO. The battery too is faulty. Because I connect it straight to the charger and it doesn't charge.
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Click to collapse
Hey... Just bought a brand new one with the same issue straight out of the box.
Have you tried measuring the original battery with a multimeter?
The battery protection circuits will sometimes protect the battery from undervoltage by not letting them charge any more as it potentially damages them...
One way to attempt to recover the batteries is to remove the protection PCB and charge them with a LiPo charger at super low amps till they get up to like 3.3v then letting the original charger and battery protection finish charging it... (Kinda dangerous if battery really is damaged)
These things sat on shelves for years.... I can't imagine the batteries didn't drain.
Edit: did you take the keyboard apart??? Lol... Is it glued together??
I took mine apart... This is not a reversible process lol... Checked battery voltage and sure enough... 0 volts.... There's no Li-Ion charger that will ever try to charge that battery as there is a risk of fire.
Looks like HTC cheaped out on the battery protection circuit and it didn't cut off the battery below 3.3v and let it get to 0v... Gonna have to try to recover the battery using my lab power supply to trickle charge it... My lipo charger complains and won't charge it at all.
I'm having the same problem. Just bought one of these on Amazon for $30 and was excited to use it. How did they charge $130 for this when it came out?? This is useless. I'm going to have to return this junk. Any solutions before I do?
The solution is easy.
I have effected this repair on multiples of the nexus 9 folio keyboard.
Someone said earlier that the charging circuit is bad in addition to the cell being at 0v. This is simply not true. For the charging circuit and the cell to both be bad you will have likely hit the lottery in a bad way, or shorted and caused damage yourself.
Truth is that as mentioned before their protection circuit on their $130 keyboard was not up to the task. I make the assumption also that they overpriced these so heavily they sat until their hardware choices became apparent by making them DOA after the cell's voltage fell too low.
Someone stated that opening the keyboard is irreversible, this is also untrue, it only requires a bit of skill and patience.
Take it for what it is, because I would never recommend someone to revive a cell that had been sitting below 3.2v, it's just unsafe, but this is what worked for me as I didn't feel like digging through china stock to find a matching cell.
The cell is at 0v, so the fix is simple, connect another similar chemistry (3.2v-4.2v) cell in parallel (between the protection circuit and the cell.) I just used and 18650 from a laptop battery. Let's call this a "jump start." Start the charging and disconnect the second cell. Red charge LED should remain solid and charge cell 1 to 4.2v and you are good to go.
As far as the details, we know that the cell is on the left side, so only heat and slice adhesive from just beyond the corner to the center, slide your tool under the cell to remove the adhesion from the main body and carefully slip the cell out far enough to get at the contacts in order to get between the protection circuit and the cell.
main points
1 DO NOT PUNCTURE THE CELL (ALUMINUM TEARS EASILY)
2 DO NOT DAMAGE THE RED AND BLACK LEADS FROM THE PROTECTION CIRCUIT TO THE MAIN BOARD
3 DO NOT PRY OPEN THE OUTSIDE CORNER NEXT TO THE CELL AS THIS CORNER IS MORE SUSCEPTIBLE TO DEFORMATION THAN OTHER AREAS
Probably best left to a skilled tech, but it can certainly be done.
The adhesive htc uses is much like hot glue, so after scraping the old glue out reseal and press with a hot glue gun (precision tip recommended,) easy peasy.
On a final note, shame on you htc (and google.)
k2thec said:
The solution is easy.
I have effected this repair on multiples of the nexus 9 folio keyboard.
Someone said earlier that the charging circuit is bad in addition to the cell being at 0v. This is simply not true. For the charging circuit and the cell to both be bad you will have likely hit the lottery in a bad way, or shorted and caused damage yourself.
Truth is that as mentioned before their protection circuit on their $130 keyboard was not up to the task. I make the assumption also that they overpriced these so heavily they sat until their hardware choices became apparent by making them DOA after the cell's voltage fell too low.
Someone stated that opening the keyboard is irreversible, this is also untrue, it only requires a bit of skill and patience.
Take it for what it is, because I would never recommend someone to revive a cell that had been sitting below 3.2v, it's just unsafe, but this is what worked for me as I didn't feel like digging through china stock to find a matching cell.
The cell is at 0v, so the fix is simple, connect another similar chemistry (3.2v-4.2v) cell in parallel (between the protection circuit and the cell.) I just used and 18650 from a laptop battery. Let's call this a "jump start." Start the charging and disconnect the second cell. Red charge LED should remain solid and charge cell 1 to 4.2v and you are good to go.
As far as the details, we know that the cell is on the left side, so only heat and slice adhesive from just beyond the corner to the center, slide your tool under the cell to remove the adhesion from the main body and carefully slip the cell out far enough to get at the contacts in order to get between the protection circuit and the cell.
main points
1 DO NOT PUNCTURE THE CELL (ALUMINUM TEARS EASILY)
2 DO NOT DAMAGE THE RED AND BLACK LEADS FROM THE PROTECTION CIRCUIT TO THE MAIN BOARD
3 DO NOT PRY OPEN THE OUTSIDE CORNER NEXT TO THE CELL AS THIS CORNER IS MORE SUSCEPTIBLE TO DEFORMATION THAN OTHER AREAS
Probably best left to a skilled tech, but it can certainly be done.
The adhesive htc uses is much like hot glue, so after scraping the old glue out reseal and press with a hot glue gun (precision tip recommended,) easy peasy.
On a final note, shame on you htc (and google.)
Click to expand...
Click to collapse
I want to try this repair on my keyboard. do you have pictures where to connect the wires.
I have a laptop battery
i have the case pulled apart
Just want to make sure that the wires are in the correct place.
The folio battery has a USB jack at one end and a switch (on/off perhaps) and a blue light at the other. What's happening when the blue light blinks?
Lindommer said:
The folio battery has a USB jack at one end and a switch (on/off perhaps) and a blue light at the other. What's happening when the blue light blinks?
Click to expand...
Click to collapse
i meant if i take the keyboard apart.
I ordered another on off ebay, but i used the suggestion i thiunk i saw on here. I have a microusb OTG plugged into the nexus 9 and running a usb to the keyboard. it is supplying enough power to run he keyboard. also it does not seem top drain much power at all.
I'm typing this message on the folio keyboard. if the other keyboard folio has the same issue then i can at lease use this solution to use the folio.
now i need to order a shorter usb to microusb cord so i dont have to rubber band the cord and look sloppy when carrying it around
Thanks for that. But what about the blinking blue light?
Lindommer said:
Thanks for that. But what about the blinking blue light?
Click to expand...
Click to collapse
That is paring mode if in not mistaken.
Nah, it's definitely a charging light. Doesn't blink when pairing but does when a USB charging lead is plugged in. Goes off after a couple of minutes, which confirms what we all know: the keyboard doesn't/won't charge.
Picked up one of these new from Ebay. It doesn't seem to want to charge and will only work when plugged in with charger. Anyway to get it working? Guess it's a return