So I got this phone 2 days ago and I love it except for the battery.Anyways,the battery temp while charging is 34c is this normal?(37c while writing this in chrome)And I noticed that battery drains pretty quickly while gaming(like clash of clans)and hot from the back-top.So is this normal?n
Yes, this is normal. Having the screen on while charging will make it even warmer. Be aware that the phone charges more slowly when the battery rises above roughly 90F/32C, so keeping the phone cool will help with charging speed. Mine will drop from the max of 1600mA with the stock charger, to about 300mA, as the temperature reaches the low-90's F.
Thanks for the reply!
Yeah I noticed that.When ive put the phone in an air conditioned room,battery tempreture decrased to 31.5c and the voltage increased to 4300 mV.But I did a research and found that li ion max voltage is 4.2v anything up is dangerous unless the battery got some sort of overvoltage protection.So should I be worried?
No. Mine charges to 4.4V. I'm comfortable that this is a safe value for the battery.
If LG had it dangerously overcharging every single battery, that would be incredibly irresponsible. I'm sure they picked a safe voltage.
Guys - what app/s are you using to measure. I use Ampere but is there any better?
Thanks.
Just go to the hidden menu by dialing *#*#4636#*#*
That doesn't show the charging Ma?
I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?
513263337 said:
I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?
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You made my night... Slower charger kills battery not fast charging.. fast charge save battery to be honest. And you dont have to be worry since the batteries now are LI-lon . Go get info in google about the batteries . All i can say you got infos wrong.
Sent from my ONEPLUS A3003 using XDA-Developers mobile app
Agree with previous post. But if it makes you feel better, just don't use a dash charger...
Very simple.
lummujaj said:
You made my night... Slower charger kills battery not fast charging.. fast charge save battery to be honest. And you dont have to be worry since the batteries now are LI-lon . Go get info in google about the batteries . All i can say you got infos wrong.
Sent from my ONEPLUS A3003 using XDA-Developers mobile app
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OK. I didn't know.
I was speaking from my past experience with Samsung Galaxy Note 4. I bought couple of original Samsung batteries and rotate them throughout daily usage. I noticed a significant difference in battery life comparing the ones that I used fast charge on vs the ones I didn't. After that I stick to NOT using fast charge.
Of course, that's nothing scientific. And Samsung uses a different fast charge mechanism (higher voltage) than OnePlus (higher current), so there could be difference there too.
Because Dash Charge seems to be re-labeled Vooc charging from OPPO, I can tell you, that the last two years with charging minimum one times every day, there is no bad effect on the battery (still the first one).
Sent from my Find7 using XDA-Developers mobile app
513263337 said:
OK. I didn't know.
I was speaking from my past experience with Samsung Galaxy Note 4. I bought couple of original Samsung batteries and rotate them throughout daily usage. I noticed a significant difference in battery life comparing the ones that I used fast charge on vs the ones I didn't. After that I stick to NOT using fast charge.
Of course, that's nothing scientific. And Samsung uses a different fast charge mechanism (higher voltage) than OnePlus (higher current), so there could be difference there too.
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Samsung devices are notorious for killing batteries and its more likely hardware than it is the battery itself, u will be fine
I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?
513263337 said:
I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?
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I use Samsung 1.5 Amp charger and keep my battery between 40% to 80%
I think these are best for long term usage.
repsol89 said:
I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?
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I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.
iam_adarsh said:
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.
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Well, it was my first thought, but everyone in this topic is telling me that OP works different than Samsung!
iam_adarsh said:
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.
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that's the problem of the charger or the phone itself. thecharger is designed not to charge when the battery is full. What I want to say is you experienced an accident and sorry for you.
The most serious threat to the battery is high temperature. OnePlus 3 reduce the charging heat by its dash charge. The dash charge pushes low voltage directly to the phone, which mitigates the heating problem by pushing high electric current and making the voltage transition process in dash charger. Most of other phones still use high voltage because they fail to create high current. recalling the physics in high school, the power is current multiplied by voltage and energy equals to power multiplied by time. than you would understand the powerful feature of dash charge
dlhxr said:
that's the problem of the charger or the phone itself. thecharger is designed not to charge when the battery is full. What I want to say is you experienced an accident and sorry for you.
The most serious threat to the battery is high temperature. OnePlus 3 reduce the charging heat by its dash charge. The dash charge pushes low voltage directly to the phone, which mitigates the heating problem by pushing high electric current and making the voltage transition process in dash charger. Most of other phones still use high voltage because they fail to create high current. recalling the physics in high school, the power is current multiplied by voltage and energy equals to power multiplied by time. than you would understand the powerful feature of dash charge
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The power is current multiplied by voltage so what's the difference between high current mutiplied by low voltage versus low current multiplied by high voltage ?
2V x A = V x 2A
lapocompris said:
The power is current multiplied by voltage so what's the difference between high current mutiplied by low voltage versus low current multiplied by high voltage ?
2V x A = V x 2A
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qc3.0 uses low current and high voltage. Dash uses high current and low voltage. As a result, they have similar power and both charge quickly. However, the heating problem is more serious for qc 3.0. The difference of the battery voltage and charger voltage is the leading factor that determines the transition efficiency. The bigger the difference is, the more heat charging process generates.
So~ you could look up for qc3.0. for mi 5, it has three adaptive mode: 5V2.5A、9V2A、12V1.5A. for dash, we have 5V4A
repsol89 said:
I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?
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There is no problem with leaving your phone on the charger. I do this with every phone since years.
If people experience something bad with it, their phone or battery are broken. The current tech just keeps the battery at full capacity once it's full. Never had any problem.
So many "opinions" but mostly incorrect. The answer to the OPs question is that you don't have to worry about quick charge destroying your battery. It will not have significant impact on your battery capacity. I would have been more worried about breaking the usb type-c port(see point 2 below). All things considered, after 2-3 years you will probably buy a new phone anyway and also you can always buy a replacement battery cheap. But you can simply use a normal charger which delivers <3A with 5V so you don't have to worry about anything.
1- Slow charge does not damage lithium-ion chemistry batteries. You can read about lithium-ion charging here. But neither fast charge will damage lithium-ion as long as the battery temperature is not extremely high. Also temperature at different charge stages effect the capacity decrease (source) But you will be fine as long as the battery temperature is less than 45C. The charging IC should stop the charging process if it exceeds it anyway.
2- Qualcomm's quick charge is much better than voop/dash charge from an engineering standpoint. This is why also USB organization's power delivery (PD) standard uses similar scheme. The problem is the cable and the connector. The maximum allowed current at 5V is 3A with usb type-c connector (source). If you provide more current, you need to use a thicker cable(dash/vooc cables). But you can't change the connector, and it may damage your connector in the long run to use 3+A currents to charge. Because there is a contact resistance (R) and the power lost in the connector is square of current (I) times R. Meaning R*I^2, it will wear off the connector faster. This is why some companies with some engineering skills opt in to use higher voltages instead of higher currents.
3- You can't push more current to lithium-ion battery than it accepts. The maximum current is voltage delta (between charging voltage and battery voltage) divided by internal resistance. This is why you can charge empty battery much faster. If you use an app like Ampere from play store, you can see the voltage of your battery before and after you plug in your charger. If you plug in a normal charger, you will see that it goes up a little bit. If you plug a quick charger it goes up to ~4.35V
4- Yes, there is conversion inefficiencies for quick charge inside the phone, and it will warm up the "phone" and battery only indirectly. The conversion IC are normally >90% efficient (source). This does not mean that your battery will be destroyed. It is perfectly fine to charge lithium-batteries with up to 45C temperatures (source).
4- If overnight charging killed your battery, your battery was faulty (or you had 3rd party battery?). The battery should be capable of holding 4.35v charge. You would need to store battery at 4.35V full charge for over 3 months to loose 20% capacity (http://batteryuniversity.com/learn/article/how_to_store_batteries). Having full charge few hours overnight won't destroy it unless your battery or device is faulty.
With all this information, I would rather opt in for USB-PD/Qualcomm Quick Charge solutions than VOOC/DASH solutions. I think eventually only USB-PD will remain and everybody will use it as a standard only.
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.
Does fast charging as opposed to normal charging (FC turned off in device care) as our standard means of charging our devices affect battery lifespan in the long run?
All things being equal, I don't think that it does
raul6 said:
All things being equal, I don't think that it does
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Well, thanks. But it's the noticeable heat generated from fast charging that gives me some concerns whereas in normal charging, the heat isn't that much.
Well, no such differences with chargers I use but if there was I would be probably use normal charging
No. Charging doesn't harm your phone
Sent from my SM-N975F using Tapatalk
Its a known fact that high temperatures are bad for lithium ion batteries, fast charging generates more heat than std charging, if there are no adverse effects by fast charging, then it would not be an option, it would be the standard
winol said:
Its a known fact that high temperatures are bad for lithium ion batteries, fast charging generates more heat than std charging, if there are no adverse effects by fast charging, then it would not be an option, it would be the standard
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Fast charging is fine as long as you control the heat; brief 10-30% partial charges generate a modest temp increase. LIs are designed for fast charging.
If your ambient room temp is high simply wrap a damp rag around the phone while charging to cool it.
Monitor bat temp and keep it belong 95 F.
-Avoid full or near full charging-
60-70% is a good range; > 62% is ideal for longevity.
Avoid discharging below about 20%; low voltage isn't as efficiently converted and there's a knee in LI's power curve near that mark; battery % drops more rapidly from 20-6%.
Deep cycle recharges stress the LI much more than short 10 or 20% bursts.
LI's love frequent, short charge cycles in the 40-60% range.
Keep battery >100 F when using, charging or storing!
Avoid using the phone whilst charging; it screws up the charge cycle curve and greatly slows charging!
Same-same if battery temp exceeds 100 F!
25 w brick yields about 2%@ minute charge.
People keep saying that their chargers are not working. I noticed via AccuBattery that once my phone exceeds 100-104 F, that the phone stops charging until the phone cools down. I don't think this is a power brick/cable issue, I think this is a thermal management issue.
It's done to try and protect the battery from unnecessary stress and possible damage.
Optimum Li charging temp range is 82-99F
A start temp of 85F is better.
Never attempt to charge below 40F
Avoid starting charge below 72F
Fast charging will likely not engage if temperature is too low (around 71-50F or less).
Charging will disengage if the battery gets too hot about >103F.
Fast charging may disengage at 100F and will start ramping down around 80% and ramp down even more as it approaches 100%