Hi,
Recently I've got my wireless charging pad (a well-known $27 generic wireless charger off eBay). Put my phone on, and it charged flawlessly and quickly enough. As soon as it got 100%, the charging stopped, and the LED on the pad turned green. No problem here. But, if I remove the phone and put it back immediately, while it is still at full capacity, the charging starts over and continues infinitely, as if it is connected to a wall charger. This concerns me, since the battery is being kept on trickle charging forever (about 20mA in screen-off mode according to Battery Monitor Widget), and the phone gets slightly warm. Besides, the charger unnecessary drains power from outlet.
I suspect, there's something wrong with communication between power receiver (phone) and transmitter (charging pad), since according to Qi standard, the power receiver should send an End-of-Power message to transmitter, as soon as the battery gets full, which in fact happens initially. But once the phone is removed and put back on the pad with battery still full, it seems, the message is not transmitted anymore, and that causes the pad to continue feeding power infinitely.
Could you please check your Nexus 4 with the wireless chargers you posses? I need confirmation, that this is indeed the phone's fault, and not the charger itself.
Follow these steps to possibly reproduce the issue:
1. If the phone is fully charged, play with it a little to drop the charge for 1-2%.
2. Put the phone on the charging pad and wait until charging process stops (your charger should probably notify that by some beep or LED color).
3. Quickly remove and put back the phone on the pad.
4. Observe what happens.
5. Report here.
Thank you!
Related
For some reason, every couple of days when I plug my phone in to charge the battery overnight I end up getting an alert (about 4 in the morning!) to change the battery because mine is dead, along with the back up battery, and then the phone shuts off within about a minute. Luckily I have another battery, which I then put in, and then put the dead battery in the "back up battery" slot in the cradle to charge, which it does. I don't know why this happens but it is very frustrating. I am afraid of this happening on a trip out of town where I won't have the ability to use my cradle, unless I bring it which is a big hassle. I don't know what to do.
This IS vexing. By the fact that it charges the extra battery - we know that the power transformer is connected. Since the device does not seem to be charging (possibly even discharging?) - it seems that either the connector on the charging base or the connector on the device itself are bad.
Have you used the power dongle connected to the power transformer to attempt to charge the device? This would tell you if it's the charging base or the device. If it charges outside of the base, it's the base - if not, it's the device.
Best of luck!
How are you charging the battery - from mains power or through the USB?
I had a situation where I was only using USB power to the cradle and although this worked most of the time, I noticed that if the battery was already low (<50%) then the battery seemed to discharge rather than charge.
So the trigger in your case may be the amount of charge left in the battery before you start re-charging it.
I think other people have reported similar discharging situations, so some other ideas might emerge from a search of other threads.
Simple questions to the long story I wrote below the line(didn't realize it was so long):
I have two batteries that get a red light when trying to charge and they will not charge. I'm using a travel charger that came with the phone (used, not sure if it is the original charger). Input is 110-220V 50-60Hz Output is 5.5V 500mA. Says model T-HT-8125-SH on it.
Based on my findings, the phone should charge with 1.0A so it makes me think this is not an original charger. Old posts stated if the battery was this empty you need an original charger since it is the only thing strong enough.
The second question regards a new battery (just bought - one of the two above) dropping from having about 50% to having 0%. This is described in the story below, but could switching batteries / putting in a dead battery anything like this cause the new battery to lose it's charge all of the sudden? Or could there be damage to the phone other than the battery causing this issue?
Anyone have experience with this? What specs on a charger am I looking for that match the original charger? I may find other mini USB chargers around and if I have one that matches I can try it. I just don't want to damage the phone.
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I have a wizard I bought used a couple months ago. It worked fine until a water damage issue occurred. I let it dry out for a week and then it was back to working fine. The only thing I noticed afterwards was sometimes the battery would drop from about 75% to 25% really quickly when it did not used to.
Last weekend, it was charging overnight and in the morning it would not turn on at all. I tried taking the battery out and trying to charge it again without success. The orange light usually does not come on. I either get no light, or a red light. Sometimes the red light stays, sometimes it blinks, but usually it is red when I first plug it in for a couple seconds then goes away.
I read recently in the manual that red means it is in LDO charging mode, thus the battery is empty. I thought the battery was dead so I ordered a replacement. It arrived, I stuck it in, it worked.
Now the weird part - I let it charge some on the new battery (it was around 18% when I got it). Then I decided to test the old battery and make sure that was indeed the problem. The phone wouldn't turn on or charge. However, I put the new battery back in and there is no charge. I tried charging it and the light was orange as it should be. However, after a couple more battery switches (I found out about the red light / orange light from the manual at this point so I went to test that with the old), the new battery is acting like the old battery. Both get a red light and will not charge.
Any ideas?
No answers for you but -
My original HTC charger has the following stats:
HTC p/n 70h00051-01
Model ADP-5FH B
Input 100-240v~0.2A 50-60Hz
Output 5V 1A LPS
Thanks for the details. I suppose mine isn't an original charger as it only has half the power yours does (and is a different model). It is probably some generic third-party charger.
For anyone interested, I did manage to get the phone charging by jump starting the battery with a 9 volt battery (saw an old post about it). Just connect the positive terminal of 9V to positive end of battery, and negative end of 9V to negative on battery. I used the metal from the inside of twist ties to connect the two batteries. Hold for about 15 seconds, then see if it will charge. If not, take battery out of phone again and use the 9V for another 15 seconds..See if it will charge afterwards. It only took a couple tries before it had enough power to start charging with my charger. Just don't hold it too long as the 9V is nearly twice what you need.
Anyways - it's charging now and is at 80%. We will see if it works like it should afterwards. If so, then I will have two working batteries for the phone.
Note - this shouldn't be an issue with an original charger that is 1.0A. It seems the third party ones are less (500mA, or my car charger is 650mA). I imagine the original charger is strong enough to get it started even on a completely empty battery. If not, the 9V battery sure is.
Just an update - not sure what is going on. It finished charging and the light turned green. As soon as I unplugged the wall charger, it dropped down to 51%. Ok...so that was weird...maybe it wasn't really charged. So, I let it charge up to 100% again. Light turns green. Unplugged it, dropped immediately to 39%.
Anyone have any idea why it would lose a large amount of charge when I unplug the cable? I'm charging it for the third time now...I'm not sure what is going on.
This is all with one battery (the old one). I haven't done anything with the new battery yet to try and get it to charge, but this might explain how the new battery lost the charge it did have and became empty like the original battery - perhaps it lost it's charge when I unplugged it just as the old one is doing...in which case this seems like a phone problem...hopefully not though.
Hi guys,
Suddenly facing a strange problem since last night.
My x10i was running out of charge & i connected to the comp to charge while i was working. I noticed the charging speed was extremely low, so i restarted the phone to see if it would help. Did not.
Thought there is some problem with the cable, used a different cable as well, but no use.
The slow charging had stopped and eventually the phone died.
Tried connecting to the socket & charging, still no use.
The red led blinks when i connect the phone to a charger via the usb or the socket.
needless to say the phone does not even boot up now, obviously for no charge...
any ideas wat maybe wrong or wat i could do ?
please advice
Have you tried to let it charge for some time in off mode? As long as your battery is not dead, and the phone get the right voltage through the USB connector it should charge in an "emergency mode". This is a slow way of charging, but allows for charging without any electronic circuits to monitor it, it is not the same as the charging screen that usually displays when you connect the phone while it is powered off. Usually when a phone is completely discharged it needs to be connected at least 15 min, sometimes a lot longer, before the electronics kicks in, and starts the speedcharging.
My best advise would be to connect it to the mains charger, or a USB port you KNOW supplies power. Some laptops cut down on the powersupply to the USB ports when they run on battery. Let it be connected for a long time (several hours), and then try to power it on again.
If that does not help three things can be wrong
1. Somewhere the USB connection is broken, either in the cable or in the connector on your phone (or on the PC's connector, but that is less likely).
2. The battery is dead, modern batteries contain circuits that actually disables the battery when any given parameters gets outside the defined limits. This is to prevent the battery catching fire. On some batteries this renders the battery useless, and you need a new battery.
3.) The mainboard of your phone is dead, and hence nothing works, can be ruled out if you can borrow a battery from someone to test if your phone works then.
I hope a good and long charge can sort out your problem, that is the easiest fix, and it is free.
Hi O_K,
well, i have been charging (or trying to) the phone since it died last night.
i have used different chargers & different modes of charge (through the system & the wall socket) - no joy at all.
the LED blinks red a couple of times when connected.
Very occasionally, the SONY ERICSSON logo (startup) shows on the screen & it switches off again, back to the blinking.
So charging for a long time & through different chargers has not helped.
gonna try a different battery now to see if that can help.
Thanks for your response!
well, tried switching chargers & batteries.
The problem seems to be with the charging unit on the phone (USB)
with any charger or battery, wen connected the led blinks (like wen the phone is charging), but there is no charge happening.
eventually the phone dies, even if charging
any ideas?
There is a thread some where in this forum for fixing the same problem you have...I don't remember the exact name of the thread..if I find it I'll post the link here..Anyways what the guy did was
-Pull the battery out and connect the charger till the led turns green.
-put in the battery now and charge the phone...
and I think that was it.
Hope it helped..
EDIT: Found the link.
http://forum.xda-developers.com/showthread.php?t=944322
So I bought the official qi wireless charging back plate for the S 4. When I charge it up wirelessly to 100% the little green light comes on with the message saying to remove it from the charger. When I do the light does not turn and the message does not go away. I either have to plug it into a wired charger or restart the phone to get it to stop.
I thought at first that it would go away after a little while once the battery drained down. I have played games on the phone for 15 minutes which should drain the battery a good bit and it will stay at 100% according to the battery stats. After a reboot it will show 90% and I know a reboot does not drain that much battery.
I have tried different charging pads with the same results. Anyone else have this problem?
Yes I get that also. I have Yinjeng receiver and one white ebay charger pad and one LG charger pad. With LG pad it's charging till 100%, with the ebay pad it goes to 100% and after I lift the phone I still have a green battery in the left side of Notification bar. And indeed I can use the phone and it stays at 100%. Only a reboot solve the problem.
So the LG charging pad doesn't cause it to get stuck like that?
Just noticed that when it is stuck like that and I plug it in to a wired charger it says 'Switching to wired charging' or something like that. I wonder what controls that and it is something I can reset.
I just purchased a generic Qi wireless charger receiver card and transmitter for the S5. I can't post the link because of new member rules.
The charger works well but when the battery reaches 100% full the phone stops charging. According to the Qi standard there is no provision or method for a 'trickle charge' used by all the traditional wall chargers (I can't post the link to this either because of new member rules). What Qi does instead is turn the charger on and off periodically to keep the battery at 100% - this process is supposed to be managed in the background operations of the phone.
With the S5 ever few seconds the screen turns on, a charger connected sound is played, and then the charger turns off and the screen turns off THIS REPEATS FOREVER. The phone gets quite hot and it's terribly annoying. This happens even if the phone is turned off. I'm not sure it even has anything to do with the trickle charge process - seems like its stuck in a loop. Qi transmitter detects a Qi enabled device and begins pumping power. Qi device produces 5.3v (or something similar), phone sees input voltage and turns on to notify user of charging, and charging stops almost immediately because the battery is full (repeat, repeat, repeat...).
Is there anything in the settings or using apps that would fix this problem? Does anyone know if the samsung brand S cover (charging cover) has some extra provision that prevents this annoying problem?
farmersride said:
I just purchased a generic Qi wireless charger receiver card and transmitter for the S5. I can't post the link because of new member rules.
The charger works well but when the battery reaches 100% full the phone stops charging. According to the Qi standard there is no provision or method for a 'trickle charge' used by all the traditional wall chargers (I can't post the link to this either because of new member rules). What Qi does instead is turn the charger on and off periodically to keep the battery at 100% - this process is supposed to be managed in the background operations of the phone.
With the S5 ever few seconds the screen turns on, a charger connected sound is played, and then the charger turns off and the screen turns off THIS REPEATS FOREVER. The phone gets quite hot and it's terribly annoying. This happens even if the phone is turned off. I'm not sure it even has anything to do with the trickle charge process - seems like its stuck in a loop. Qi transmitter detects a Qi enabled device and begins pumping power. Qi device produces 5.3v (or something similar), phone sees input voltage and turns on to notify user of charging, and charging stops almost immediately because the battery is full (repeat, repeat, repeat...).
Is there anything in the settings or using apps that would fix this problem? Does anyone know if the samsung brand S cover (charging cover) has some extra provision that prevents this annoying problem?
Click to expand...
Click to collapse
The real question is, why are you keeping it on the charger once it's 100% charged? At that point just remove it and continue about with your day