yashsingh1/xdaforums huggingface dataset:
[One (M7) General] c5satellite2:
I went to a top 5 school for electrical and mechanical engineering. Trust who you want. I put things in the easiest terms for the layman to understand, and everything stated was true. All li-ion batteries at this voltage basically behave the same. If I dumbed it down too much, I'm sorry. Next time I will write a very technical explanation that nobody will understand. I'm done helping people here. Everyone knows better, but nobody actually does any research.

DON'T USE FAST CHARGE, YOUR BATTERY WILL MELT AND YOUR FACE WILL FALL OFF, I DON'T KNOW WHY, BUT SOMEONE SOMEWHERE SAID SO.

Now I get why so many devs leave xda.

I'm wrong, you are right. You are smarter and better looking. Uneducated fools.
[One (M7) General] NxNW:
Well, I made my point, you made yours. I guess that's that.
[One (M7) General] michael.s.under:
The speed at which the battery charges is one of my few issues with this phone. I feel like a fixed battery absolutely necessitates a quick charge. A slow charge with removable battery is tolerable slow charge with fixed battery is painful.
[One (M7) General] Michael_W_L:
Since when does electrical engineering do stuff on battery chemistry?

If it should be part of the course then I need to have a chat with my university.

Please write the technical explanation, will be a fascinating read. Remember referencing as well. I can write a technical bull story quite easily, no references though will back me up.

Heat damages li-po batteries, as far as I understand. Higher currents = more heat dissipated and a higher internal resistance. So the question is, how much heat is dissipated from the battery at different charge levels. If at 20% charge and 1A there is little heat dissipated, then fast charge would be fine. If it is much hotter than lower currents, how does heat affect the battery in long term.

I know little enough to be cautious with higher currents and I know that you can kill a Li po with letting it discharge past a point.

So, do give a nice technical explanation! Looking forward to it, get rid of myths. References are required though.
[One (M7) General] c5satellite2:
Does anyone here even understand what voltage and amperage are? Ponderous. If you plug a device that uses 1amp in to a 15amp circuit what happens? Does the device magically use 15amps because it's there? Does it get extra hot? The device will only draw what it needs. Don't change the voltage. That is what causes problems. 2300mah Li-Ion is ok with charging at up to 2.3A or 1C. There is most likely a limiter even with fast charging enabled that is less than 1C. Even if the stock charger is underrated at 1A, it probably is about 1.2A on the high end. This is still about .5C. Same rules apply for all Li-Ion cells around 4V. 84 deg F is where heat becomes a factor.

Why doesn't everyone worry about using their phone in the summer when your battery temp is above 84 deg and hurting your battery?

Leaving your phone in your car for one sunny day where the interior of your car is over 120 deg is probably much worse than having fast charge enabled for a whole year.

Point is fast charge is safe(using a reputable charger).

Simple answer for all:

If you want to charge faster, use it.

If not don't.
[One (M7) General] Vincent Law:
Please don't reject my statements based on unsubstantiated anecdotal, unrelated "evidence", thanks.

These things aren't made up. Every time you charge your battery, you are "hurting" it, so to speak, in that you are reducing the remaining lifetime. The faster you do so, the more it impacts the battery. Also, these batteries aren't even Lithium Ion, they're Polymer, which does make them more susceptible to such changes (not dramatically, but it is measurable). It's not all about heat, it's just how the charging reaction works. The heat only really comes into play if you were to charge the batteries excessively fast (or in a hot environment).

Source: http://batteryuniversity.com/

Furthermore, this has nothing to do with charger amperage. Most phones do not draw more than about 1.2 amps regardless of their charging method, save for Quick Charge 2.0 which requires special chargers (not just ones with higher amperage). The Quick Charge system uses other tricks during the charging process to speed it up, not just drawing more power in general.
[One (M7) General] c5satellite2:
Yes everytime you discharge or charge it is wearing out the battery. It's called heat. The electrolyte is the part that wears out. Cathode and anode aren't the issue.

Which is better, heating your battery for a longer time while slow charging, or halving the exposure at a slightly higher temp(and only higher for a portion of the process) by using fast charging?

But if you are that worried that your battery will last for 10 years without degradation:

Stop using your phone immediately, you are killing your battery, the sky is falling, and your shoes are on fire.
[One (M7) General] Michael_W_L:
Ambient temperature here gets regularly over 80f. Batteries do tend to not last as long here.

Batteries are not rated on draw, they are on output. 1 search found a list of links overcurrent protection ICs.

Protection circuits are required for some devices exactly for the reason that they draw more than they should.

You can pump more current into a battery than the chemicals can handle.

That definitely does damage the battery. Also, you can charge at 5C quite easily on a 3300 cell.

Go look at rc chargers to see that you can easily shove more than 2A into the 2300mah battery, some are charging at 10A.

However, rc batteries don't last. High charge and discharge quickly kills them. High charge definitely plays a role.

Not storing the battery with a high or low charge to maximise life is in there as well. There are specified storage charges.

I am going to grab some papers and have a read 1st before I say how much of an effect the higher current has. The NASA paper which went from 1/10 C to 1C did show a difference in capacity, a marked difference in fact.

In a 3.7Ah battery after 2 cycles, there was a 0.5Ah difference between charging at 0.1C and 1C
[One (M7) General] bgdwiepp:
Protection circuitry is a "last measure" system, it is REQUIRED on *nearly* all Lithium chemistry cell installations, and plays a number of roles;

It prevents accidental overcharge, when the charge controller gets into runaway situation. Cutting off connection to the cell until the voltage on the charger side falls below a certain level.

It prevents accidental over discharge, then the device using the battery continues to discharge the battery beyond a specified voltage, and when the cell voltage "sags" under heavy load. Also, it acts as a "lock-out" when the cell self discharges, when it is already in a low state of charge,

It prevents accidental over current situations, such as short-circuits .

It *may* prevent over temperature situations,having a temperature cut-off level, or temperature feedback to the charge controller IC.

There are applications that don't use these protection circuits, such as in RC, this is due to the extreme amounts of current they are required to handle, and as such aren't practicable, instead relying upon diligent user monitoring and care. Additionally, at low rates of charge and discharge, certain lithium chemistries are incredibly robust and don't require them.

RC Batteries are designed far far far differently to the batteries in cell phones, they use a more energy dense cell structure, and the electrodes have a far larger surface area, decreasing internal resistance that is why you can draw the higher current and charge at higher currents with less adverse effect. The unfortunate side effect of this is they are inherently more volatile, as can be seen by the number of "oh god my **** caught on fire" in the RC community compared to the number in the consumer electronics industry.

This is misleading, because the temperature rise at low charge currents is orders of magnitude lower than that at higher charge currents, eg, exposing your battery to ambient + 0.1 degree for 10 hours or ambient + 5 degrees for 1 hour, hands down the first option is better.

Also, i understand your "10 years" comment is exaggeration to convey a point, but the fact is, with a non-user replaceable battery and the number of charge cycles the phone experiences (1 a day), I doubt most users will see more than 2 years of useful working life (a point at which the battery has less than half its capacity remaining), and with a faster charge rate to impact this, even less-so. This is quite important for users who will purchase this phone on a 24 month contract.
[One (M7) General] flooty333:
So.... do we have a reason as to why only the bundled HTC charger will charge the One at full speed, but any other charger (including a 2.1A iPad charger) only charges the One at trickle/USB speeds?
[One (M7) General] bgdwiepp:
An ipad charger has a small voltage divider, which pulls the data pins to a different voltage, it does not short them as the HTC charger does, this makes the charger operate in limited charge current mode as if it is running off a USB port.

Easy solution to makr it charge at "normal" speed is to get a spare micro usb cable, remove the outer sheath, cut the green and white wires, then, the two wires going to phone (not the charger) should be stripped, joined and taped up.

use *#*#4636#*#* and then battery information to verify it has detected AC instead of USB.
[One (M7) General] nullkill:
This is what I have read and believe to be true. I now many think the batteries can't overcharge but what do you think is happening when you leave your battery on a charger for 9 hours? As I understand it your battery is left to a constant state of charging discharging which would result in a overcharged or over worked battery. Don't believe me that's fine but next you pick up your phone in the morning after being on the charger ask yourself this why does it feel hot like it's been charging??

Overnight chargers rely on the fact that you will unplug them after a number of hours. If you forget to unplug them they can continue to charge the batteries longer than they should. Overcharging WILL reduce the life of batteries. From a strictly technical sense, a battery that is always slow charged will likely last a little longer than one that is always rapid charged. However, the difference is so small that it is not likely to be noticeable for most users.

Basically, stop charging when your device has reached capacity if you want to preserve the battery's life (as we've noted before). If you can't monitor this manually (as most of us can't when we're sleeping), a power-conserving charger can help (such as the Belkin Conserve series). Either way, don't worry so much about fast charging—just unplug your device when after you're done.

The above is from life hacker and Green energy site Green Batteries
[One (M7) General] AJerman:
Yeah, I don't think that "overcharging" is necessarily the correct term to use. Overcharging to me sounds like charging past max voltage, which it won't do. It will charge to max voltage, then start to discharge for a little while, then charge back up to max voltage again, and repeat until you unplug it. The point of it potentially damaging the battery is true though. It isn't good for your battery to sit on the charger for a long time like this because temperatures are higher at max voltage, so this constant cycling keeps the battery in high stress. It's better to unplug when it's done, or even unplug at 90% if you want to really try to help your battery lifetime, but I've never had an issue with battery life diminishing any noticeable amount during the timeframe that I keep a phone (which granted isn't that long), and I plug it in every night and don't unplug until I wake up, at which point it's probably been fully charged for several hours.
[One (M7) General] flooty333:
Thanks... But based on this I can only use an HTC charger and USB cable to get rapid charging?

If I'm travelling and want to buy a Belkin charger/USB cable, it will only trickle charge as if running of a USB port?

Isn't that kinda ridiculous?

Not even Apple has such a restriction on their products.

Am I missing something?
[One (M7) General] KennyLegend:
Why would u WANT to buy a belkin charger? Why not buy a htc charger?.

I've done a fair bit of research on this myself.. And tried various combos of chargers and cables... And the ones that work best are genuine htc chargers, coupled with htc's and other manufacturers genuine usb cables.

Spurious usb cables are recognised on my One as "AC" but they still take a long time to charge. Weird...
[One (M7) General] flooty333:
The beauty of owning a micro-USB phone is the fact that you can buy pretty much any standard micro-USB accessory (cable or charger) and have it work properly with your device. The marketplace is endless. So, if I'm travelling on business and want to pickup a USB charger from a local store, I'm able to do so without thinking twice. Plus most people already own many quality home and car chargers and USB cables.

However, with the HTC One we are being forced to only use an HTC charger in order to get normal AC charging speeds.
[One (M7) General] bgdwiepp:
It depends, some manufacturers connect the data pins inside the charger so you don't need to, some leave them floating (aka, not connected to anything), some put in the a resistor between the data pins, and some put in a resistive divider between the data pins and vcc.

These are ways to tell the phones the charger is able to supply the required current to charge at he higher rate, without this you may damage your phone or your charger, possibly even getting yourself hurt.

Eg, you plug an iPad (massive current requirements) into a cheap ****ty charger (tiny weak charger), the charger tries to supply the current, and the transformer gets hot, the insulation between the windings melts and you connect main voltages the usb port. This is a worst case kinda thing.

Maybe you are missing something, like the fact that apple does almost this exact same thing, but gets away with it because nearly every 3rd party charger is designed to be iphone compatible from the get go.
[One (M7) General] KennyLegend:
I hear ya... But that's not real world situation anymore. Each manufacturer has their own way of matching their phones to their chargers.. Ie shorting data pins in the charger etc.

I also tried my Nexus 7 with various chargers and cables, as I did the same with my sgs3 and i can tell you they are ALL fussy. Each and every one of them had their own preferences for some. Reason

So your theory of going into a shop to use a "micro usb" charger are outdated....not just for the htc one.. But... For a lot of modern day phones and tablets unfortunately.
[One (M7) General] Dharkan:
Guys, what do you think about %99 charging situation? I mean should wait for %100 all the time, I don't get why it takes too long.
[One (M7) General] flooty333:
Thanks guys.

I'll keep my eyes open in the market for 3rd party chargers compatible with the HTC One.
[One (M7) General] KennyLegend:
See that's the thing... Most will be "compatible" but in reality they won't charge at the proper rate. I ordered a 1A genuine htc charger a few days ago off ebay for approx £5 so they're as cheap as 3rd.part ones.

---------- Post added at 01:28 PM ---------- Previous post was at 12:57 PM ----------

Btw I've just flashed a custom kernel and enabled "fast charge" and it makes a big difference. And no extra heating of the battery either, esp when used for top ups. I disable fast charge if I'm charging overnight.
[One (M7) General] tommykwan222:
it takes me for 3.5hr to charge my htc one form 5% to 100%, is it normal ?
[One (M7) General] djbenny1:
agree with OP, its very slow to charge - not 8 hours tho!
[One (M7) General] flooty333:
Thanks. Will any 1A HTC charger work properly with the One?
[One (M7) General] lampel:
All my old HTC chargers work well including a couple that are branded Palm.
[One (M7) General] treoreloaded:
jump on the band wagon here, mine takes atleast 5-6hrs from 1% to 100%. i always make it a habit to wait till 1% before i charge my phone. probably best thing to do since our phones are sealed and battery replacement would be a total pain.
[One (M7) General] Dharkan:
Btw mine didnt take that long to change.3-4 hours top.
[One (M7) General] GermanGuy:
Which kernel are you using? I am using Faux and enabling fast charge does not seem to make a difference for me.
[One (M7) General] PcFish:
I thought all phones do this. When they get close to 100 it switches to trickle charge so it doesn't overcharge the battery. My guess is there's heavy background use.
[One (M7) General] KennyLegend:
Team sevens.. Although just tried it again while ago and I'm not sure it works properly.
[One (M7) General] D_Magic:
Fast charge only works when charging with usb...not with wall charger
[One (M7) General] BenPope:
Probably the worst thing to do.
[One (M7) General] Michael_W_L:
I wish manufacturers would publish the limits used.

If 0% on device is actually a real charge of 30% then it wouldn't matter.
[One (M7) General] KennyLegend:
Hmm.. Didn't know that.. Thx.
[One (M7) General] Syn Ack:
Just received my Galaxy Note 2 2amp charger today and WOW this thing full charges the phone in like 1 hour. lolol
[One (M7) General] palitsyn:
I was a little surprised by how long it takes to charge. But, I was also pleasantly surprised by how long the battery lasts. I switched from Nexus 4 and the battery seems to be a lot better. Well, maybe not a lot, but it is noticeable.

I have now been using the phone for 4 days and I only had to charge it over night.
[One (M7) General] vegetaleb:
Battery life time is very random with me,it can last a day or 2 days,I think we need time to let the battery settle and calibrate itself (about a month)

As for charging time there are no problems at all and I can fast charge with custom kernel and trickster app
[One (M7) General] scm_crash:
Doesn't surprise me. HTC made the Amaze charging cable a micro-USB with a different shape so you couldn't use the same cable with any other phone. (Dumb?) But you can still use any micro USB to charge the Amaze. Both my parents have HTC Amazes and when I go to their house I can't charge my phone. (Dumb!)

I have no idea why HTC does this kind of stuff.

On the other hand, my phone still charges REALLY fast. I do have a 2A HTC car charger which charges the phone pretty fast. I think the fastest I've seen was just over 900mA, but I don't think the kernel will allow a 2A charge.

Battery Monitor Widget Pro seems to have a good handle on this battery's characteristics, so I go by its time calculations.
[One (M7) General] stepinmyworld:
I have have a 2amp charger and it doesnt charge the HTC one faster than the stock charger.... Hmmmm
[One (M7) General] jdidtht:
God shut up. Is it really such a huge difference in the life? If your so worried about the lifespan of your battery due to fast charge just don't use that feature. You literally can use this feature a thousand or more times and you will be fine.. You should've bought an s4 so u can have that option if your so worried. Helpful thread made horseshi$ by people just being idiots. You can have as much technical background as you want and in the end you will find that you are wrong and fast charge is fine and actually a better alternative. Kernel devs know what they are doing man so chill.
[One (M7) General] Michael_W_L:
https://batteryworkshop.msfc.nasa.gov/presentations/09_NESC_Safe_Chg_Rates_LiIon_KBugga.pdf

I am not sure what you are trying to prove with your post but really, I have to ask. How can you say that. I see no numbers, I see nothing but, "trust the devs." Optimising a kernel for more performance while decreasing stability, sure. They can get the system running better than the manufacturer with all the downsides not even being noticed as it is done so well. Or the manufacturer has some poor code that was cleaned and made a marked improvement.

Is it such a huge difference? Go look at the paper linked above. It is an interesting real albeit technical.

Then trusting the devs is a very good thing, that is what they do. However, asking a programmer about a battery is a different story. They are not linear, have many different variables that all can affect it.

Read the presentation linked, it was done by people who know far more than you or I. If you want to tell me they are wrong then tbh I really don't care as I don't even have a stake in this battle in any way.

Unless you know what the difference between a "fast charge" and a standard charge in mA, you can't really say what effect it will have.
[One (M7) General] Philly Jim:
Yooooooooo J you got a One two ...I just got mine Wednesday , hope to see you in our t mo one forums things look a little slow for now.......

Okay Okay Okay sorry back to our regularly scheduled battery talk lol.......:good:
[One (M7) General] retiredat21:
I don't know about you guys but I just received my HTC One developer edition from the US this afternoon .. first time boot and the battery was at 55%.. played with it until it goes to 10%. charged it and as of now it's at 80% and has been charging for 1 hour and 45 mins.. maybe the voltage here in the Philippines is helping the charging process.. it's 220v here..
[One (M7) General] Michael_W_L:
Shouldn't make a difference.

The charger will output 5v and a fixed current no matter what.

You most probably don't have as much background apps as others yet.

Actually, it would be interesting to find the charging time with devices off and see how long it takes. It will be shorter than on charging, the question is how much.
[One (M7) General] BenPope:
The voltage will be fixed, but not the current.
[One (M7) General] mathen:
In that case iPad power adapter too should be working(12W):confused: I have tried it on my iphone,do work.
[One (M7) General] hamdir:
just one more ability where poor HTC gets slaughtered for doing a good thing

are you aware of the lazy battery effect? these batteries performs best when you don't over charge or never over drain them! so its best between 20% and 80%

the phone charges fast up to 80% and then its slow down hill to 100%

the logic of all this is to counter over charging during over night by delaying it's arrival to 100%
[One (M7) General] NxNW:
It does slow down as it approaches 100%, but that's not the "logic" behind it.

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
[Xperia Play General] Mangoon13:
Can someone help me.

I have a Bug at my phone, that after connect with more than 2 or 3 Wifi networks my wlan doesn't work anymore.

I can start it and can try to connect with a network but then it tries to get an ip address and it lose connection and reconnect.

Everytime i get this i have to re flash my phone to get it work again.

Does someone know how to fix it?

I'm currently at CM9 FXP 215 with Lupus Kernel V8-720P

But it doesn't matter what Kernel or Custom Rom i have flashed
[Xperia Play General] Mangoon13:
Ok now i have a way to fix it temporary.

I set a static ip for all Networks(same IP at all networks, because they are all from me)
[AT&T HTC One (M7)] shawman:
I'm not usually one to start threads but this has gotten to be quite the nuisance. I'm coming from a Galaxy S3 running AOKP 4.2.2 (I was kinda spoiled by the near Vanilla Android♥), and have never used HTC sense.

On AOKP stock android galley I could share it after selecting "View Image" in aviary.

Problem. I can't find my photos that I've edited with Aviary and saved.

What I do, how to reproduce.

1. Take a picture

2. Find it in your albums(which are a cluster**ck if you synced all your photos from your old device)

3. Share it with Aviary(may work with other photo editors)

4. Edit it somehow, then save it.

Here's where sh*t gets stupid.

5. A popup comes up saying where the photo was saved, with the options "View Image" or "Close"

6. Select view Image. YAY I found my photo that I just edited.

7. Look for the share button but only find "i" for details.......

8. Go back to the gallery and hopelessly search for the edited photo.

Thanks in advance!