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This is going to sound ridiculous, but I have to say it anyway.
I have a Samsung Galaxy S2 (SGH-i777), and I have two charging cables. A U9, and a U2.
When I charge the phone overnight with the U9 cable, I get a 100% rating on the charge, but the battery dies VERY fast. I unplug the phone at 7am, and it's down to 70% by 10am with very little use.
When I charge the phone overnight with the U2 cable, I get a 100% rating on the charge as well, but then the battery dies very slowly, the way I prefer it. I can use the phone moderately all day, and still have a good 30-40% when I get home after 5pm.
Clearly, I use the U2 cable, as this achieves my goal. My question is, why does it work this way? Is there something wrong with the U9 cable? Does it charge the battery differently than the U2?
Check what kind of charging the phone recognize "USB" or "AC". If it is USB the charging is slower (450mA) when AC is faster (650mA).
flash608 said:
Check what kind of charging the phone recognize "USB" or "AC". If it is USB the charging is slower (450mA) when AC is faster (650mA).
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I'm not quite sure what you mean. Is there a place in the menu of the phone to check for this?
I used to use the wall-outlet adapter with the U9 cable. Now I am using the same wall-outlet adapter with the U2 cable.
It`s hidden in Settings -> About Phone -> Status -> Battery Status (AC/USB)
Shibblet said:
I'm not quite sure what you mean. Is there a place in the menu of the phone to check for this?
I used to use the wall-outlet adapter with the U9 cable. Now I am using the same wall-outlet adapter with the U2 cable.
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When you connect the usb cable the phone says that is connected like a media device and a usb symbol appear in status bar and notification area, it means that are charging at 450 mAh (like usb connected to PC), but if only see a charging battery indicator then is charging at 650 mAh (like Power AC Adapter).
But I really dont know if the charge duration is affected, maybe is overcharging your battery. Try this, charge until 100% with both, but disconnect it when the phone says that charge is complete and try. Maybe with the time the battery is overcharged and has more battery with one of the cables.
At a molecular level, the slower charging is more thorough and actually deposits more charge (energy) into the battery, which is why a slow charge rate results in a better performing cell or battery. Remember, batteries (or cells; a battery is just a collection of cells) change energy from chemical to electrical when providing power, and accept energy when being charged by converting electrical energy to chemical energy. That chemical change doesn't happen instantaneously, and is why a slow charge can actually raise a cell or battery's energy level higher.
Generally, the charger measures the charge state of the battery by the voltage of the cell or battery, and charging slowly allows the charge to more thoroughly dissipate through the cell. Rapidly charging, on the other hand, builds potential (voltage) quickly, but the quick charging doesn't allow the chemical change to occur thoroughly throughout the cells, and misleadingly indicates a higher voltage (charge state) than has actually occurred.
Think of the game of Tetris: When the blocks (incoming electrons) are falling slowly, it's easy to pack them tightly and fit more into the play area (battery). When they're coming in quickly, eventually you become unable to fit them all tightly without leaving voids, and the height of the stack (perceived charge level, or voltage) reaches the threshold without being fully packed (charged).
I hope this helps, four years after the question --Mike Jernigan, Greensboro
EightOhMike said:
At a molecular level, the slower charging is more thorough and actually deposits more charge (energy) into the battery, which is why a slow charge rate results in a better performing cell or battery. Remember, batteries (or cells; a battery is just a collection of cells) change energy from chemical to electrical when providing power, and accept energy when being charged by converting electrical energy to chemical energy. That chemical change doesn't happen instantaneously, and is why a slow charge can actually raise a cell or battery's energy level higher.
Generally, the charger measures the charge state of the battery by the voltage of the cell or battery, and charging slowly allows the charge to more thoroughly dissipate through the cell. Rapidly charging, on the other hand, builds potential (voltage) quickly, but the quick charging doesn't allow the chemical change to occur thoroughly throughout the cells, and misleadingly indicates a higher voltage (charge state) than has actually occurred.
Think of the game of Tetris: When the blocks (incoming electrons) are falling slowly, it's easy to pack them tightly and fit more into the play area (battery). When they're coming in quickly, eventually you become unable to fit them all tightly without leaving voids, and the height of the stack (perceived charge level, or voltage) reaches the threshold without being fully packed (charged).
I hope this helps, four years after the question --Mike Jernigan, Greensboro
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4 year? You waited 4 year ???
The wireless charging seems more like a gimmick rather than an actual option for recharging the phone. If I leave the screen on (with a screensaver), the charging process from 70 to 100 will take forever (buh bye bed table clock), and if I use wireless charging on a car craddle (I adapted one), it doesn't supply enough power to even maintain the charge while driving with GPS + 50% Brighness + 4G.
Yes, it discharges while recharging. It's ridiculous!
When I had the G2, I remember few kernels that allowed the user to change the charging current in different scenarios, and one of them was wireless charging. I think it is limited to 1A stock, and the USB charges at 1.8A.
Is it a known issue, or is my G3 problematic? I also feel it takes a long time to recharge even on cable. My G2 used to jump easily to 60% within' minutes, from 15%. G3 seems to sip a lot, and recharges too slow.
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and on a related note, sometimes when I place the phone on the wireless craddle, it says "Charging wirelessly" or "slow charge, center the phone bla bla bla". But most of the time it doesn't say anything at all, and just charges. Should I consider it slow or normal charging?
---------- After a brief test, it seems that it doesn't report if it's charging slowly or normally, horizontally. Even with screen rotation disabled, it just refuses to report. Weird.
How can I see the charging current? Is it even possible (I used to be able to do so on my Galaxy S3)?
You can use CurrentWidget: Battery Monitor from the play store to look at the charging rate.
I seem to be getting 0.7 Amps with my wireless charger which is just about okay, but yeah it will take time to charge if you have screen powered on.
if4ct0r said:
You can use CurrentWidget: Battery Monitor from the play store to look at the charging rate.
I seem to be getting 0.7 Amps with my wireless charger which is just about okay, but yeah it will take time to charge if you have screen powered on.
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It says 0mA, wirelessly or cable. What the heck?
I've had my Nexus 5x for a couple months now, I bought it through amazon refurbished. (My girlfriend has the same device, she bought hers brand new. Her's is the international model though) Here's a listing of the charging cables, and chargers that I have:
Anker Quick Charge 3.0 and USB Type-C 24W USB Wall Charger http://amzn.to/2mitz3n
Anker A to C 6ft cable http://amzn.to/2lbw2HW
Anker 24W Dual Port Charger http://amzn.to/2mx16Tt
(I bought the a to c cable to be able to connect to pcs or whatever, and the charger i had for my Nexus 5 and other micro usb devices.
Standard Google Charger https://store.google.com/product/usb_type_c_18w_power_adapter
Obviously the middle item there doesn't charge at full speed, it isn't intended to. But my charge rate using any of those devices is still over all over the place within each of those items specifications. So it isn't likely that is a cable or charger issue which is normally the issue when someone has charging rate problems. yes i know the charging rate slows down as it reaches higher percentages to prevent over charging and other types of battery damage.
My phone can be down to 20% battery when I plug it in and it could start charging at 110mA or 2000mA+. Whatever rate it is though, it isn't going to stay that way for very long. If it starts low, then it might work its way up into the 700-900s slowly or to around 1000mA. If it starts up high 2000mA it'll likely start working its way down slowly into the 1000-1800mA range.
Sure charging at slower rates helps the battery to last longer, but when i have no control over this, and at times it discharges faster than it is even charging it is bad. I can actually deplete battery sometimes, if its charging while video chatting. Albeit very very very slowly, but still. The battery life and range seems to be very good aside from this charging issue. The connection port on the phone seems really quite solid as well and wiggling the cord doesn't seem to affect the charge rate as best as I can tell.
My girlfriends 5x charges in about half the time that mine does, or sometimes its even worse, i just have to pay attention to what it is doing when i plug it in. So my question is, is this a battery problem or is there something else going on with the phone? What is it that throttles the charge rate down as the battery % gets higher? Is there a chance this could be faulty and causing it to be all over the place like this? Any ideas about this would be very helpful thanks in advance.
Ps: I really do love the device, it works great, I have no issues with it beyond the charging rates that can be all over the place. I can go from 10% battery to 75% sometimes in half an hour or so. Then i get times where it takes well over an hour for that much.
(I use ampere to measure the charge rates)
Charge rate goes down with higher battery temperatures. Let the device cool down a bit before plugging in, also keep the screen off to allow it to charge at full speed.
The charge will also slows down as it fills up, the last 10% will take the longest.
bblzd said:
Charge rate goes down with higher battery temperatures. Let the device cool down a bit before plugging in, also keep the screen off to allow it to charge at full speed.
The charge will also slows down as it fills up, the last 10% will take the longest.
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I appreciate you taking the time to respond, since you are the only one thus far. But as I said I'm aware of the charging slowing down for those reasons, and I've got another device to compare to. It isn't the same, and the device isn't hot.
There is no problem with your battery. The phone is badly designed. Unfinished SoC combined with a small battery and a big screen. Your money is better spent on something else.
Sinistersky said:
There is no problem with your battery. The phone is badly designed. Unfinished SoC combined with a small battery and a big screen. Your money is better spent on something else.
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He's not talking about battery life. He's talking about charging times.
Personally, no issues with charging here. Always goes 15% to ~90% in 60 minutes with the stock charger.
Sent from my Nexus 5X using Tapatalk
EeZeEpEe said:
He's not talking about battery life. He's talking about charging times.
Personally, no issues with charging here. Always goes 15% to ~90% in 60 minutes with the stock charger.
Sent from my Nexus 5X using Tapatalk
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"...So my question is, is this a battery problem or is there something else going on with the phone?"
Also, I have no problems charging it either.
Sinistersky said:
"...So my question is, is this a battery problem or is there something else going on with the phone?"
Also, I have no problems charging it either.
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Yet you talked about unfinished SoC and small battery. ? If anything, small battery would be charging faster.
Sent from my Nexus 5X using Tapatalk
Sinistersky said:
"...So my question is, is this a battery problem or is there something else going on with the phone?"
Also, I have no problems charging it either.
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I don't have any issues with my battery discharge rate. For what it is, and what I use if for I'm happy with it. And from what I've read about the usages from others I think I have no issues there compared to others. I'm just referring to the charging rates, the way it charges
EeZeEpEe said:
Yet you talked about unfinished SoC and small battery. ? If anything, small battery would be charging faster.
Sent from my Nexus 5X using Tapatalk
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But due to an unfinished and rushed SoC, it doesn't charge faster. The charge rate of this device is limited to 40% of it's intended charge rate.
Sinistersky said:
Your money is better spent on something else.
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Fairly pointless comment considering I've got one already, it isn't me asking if I should buy one. Point taken though that you aren't happy with the device
ideaman924 said:
He says he already owns the device. No point in telling him how poor his purchase decision was. And it wasn't that poor of a decision considering how good it is. It stands up fairly well to my abuse and the small screen is OK to grip.
OK, a serious question:
1. Charging speed is affected by Charger (the thing that plugs into the wall), the Cable (how long or thick it is), and the Battery (how hot, how full it is). This is the basic, moving on.
2. Sometimes the C port is buggy and doesn't correctly detect the maximum amount that a cable+charger combo supports. Download Ampere or some other current measuring tool like GSam (although I never bother with GSam, Ampere is awesome), and make sure the max amperage is 3000 mAh. Anything lower than that means you have a low-powered charger, a less-than-optimal cable, or a hot or near-full battery. I recommend plugging it in at around 50% to make sure the near-full charge speed drop doesn't affect anything during your tests.
3. If that doesn't work, replace the battery. Final line advice.
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He's already using Ampere to measure and has 3 chargers to compare with.
Sent from my Nexus 5X using Tapatalk
I just bought an use xl. The oem accesories were never used seems he was charging the pixel mostly in his car. Now im using the official oem charger and cable and heat up the phone like crazy. It does say rapid charging but even the time went up to 3 hour estimated time to fully charge which is crazy. Now using a galaxy s7 edge dock charge and some spare usb c cable i had the phone does not heat up,. Charge in quick charge and it take like an hour and 20 minute to fully charge..... Im i missing something here?
Charging time left is not static it changes with temperature. If your phone is already reached 42 45 degrees which generally correct it slows down charging. And also it heats up if you are using your phone during fast charging intervals which is first 20 min. Also even when you don't use it, it heats up because of wake locks (charging). Also i realize a hot climate is a factor. For oem charger it can reach 3 amps so it is normal for heating and most other chargers supply less so it does not heat up. Soo it is like a design problem you can charge your phone super fast but it will heat up so charging speed will vary but i think in the end it will still quick enough.
Why do you think they advertise quick burst charge instead of quick full charge ?
So I've noticed my 3xl is crazily boosting power to the phone when charging. I've seen it go all the way charging at 35watts until it reaches 10% then it slows down at 22-25watts until it kind of reaches 25-30% and then it goes to at 15-18watts until it reaches 100% which is lame.
I've read the charger can deliver 65watts and I've used it to charge a laptop which is incredibly fast and it charges my Xiaomi mi pad 4 plus at 22watts.
Why can't Google lock it at somewhere between 25-35watts? How's your charging? Is there any mod/way to charge it more rapidly?
The reason high speed charging cannot be maintained is due to battery physics (or... chemics). When charging battery with high power, you actually stress the battery a lot which will reduce the "total life" of battery. This reduce is (partly) due to the high temperature associated with high current (the battery voltage is pretty fixed around 3.8~4.2V, thus high power=high current) and this high temperature put a lot of stress on battery materials cause shortening of total life.
Also, if keep high power charging too long, the battery will have risk of explosion (for various reasons... High temperature is only one of the them) for example, one of the temporary solution Samsung implemented for Note 7 on fire issue is limiting the charge power, to reduce to risk of catching fire. Big company with a lot at stake like Google usually will not trade safety for anything (there are exceptions.) This is why high speed charging is limited. (sometimes hardware limited for safety reason).
isthatxavier said:
So I've noticed my 3xl is crazily boosting power to the phone when charging... I've read the charger can deliver 65watts and I've used it to charge a laptop which is incredibly fast...?
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65 watts? Not the charger that comes with the phone. Read the output (tiny) label on the stock charger). So maybe you are using a different, badass? USB-C PD charger that supports higher charging rates, but the PD protocols our phones accept are theoretically 18 watts max: [email protected]=18w, [email protected]=15w and legacy [email protected]=10w. You will not see higher than that, and it is regulated by the phone irrespective of the charger you have. The phone's charging amperage curve starts high at very low battery capacity and then tapers off pretty quickly. If your display says "charging rapidly" then you are getting the max rate you can achieve. Hope this helps.