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Hello smart members of XDA. When you get a new device the manufacturer often has something that says "Fully charge before use". I've seen Google has one of these instruction cards and that's number 1 on it. I've done some research, and for every article saying the first charge on Li-on is the same as the 5th charge and thus just charge it regularly, there's an article saying charge it originally for 10 hours.
So, smart members. What is your take? Should I charge my Nexus before using it for 10 hours? Can I use the phone while it's charging for the first 10 hours? Can I just put the battery in and use it and not worry about special charging the first time?
Thanks.
(http://www.batteryuniversity.com/partone-21.htm has a good chart, but neglects this area).
Li-on batteries
general rule is charge it as often as you can and when your home/office keep ya phone in a dock if you have one so it always charges.
Li-on batteries degrade more the more often they are reduced to minimum charge, so for best battery life charge as much as possible.
As for the 10 hour initial charge... who knows!!! i could not think of a technical reason why you should as once the battery is charged the phones internal regulator will not allow you to "overcharge" the device. you can always play with the device when its charging without any adverse effects (except it may take longer to charge if your watching films for example)
From wikipedia:
Stage 1: Apply charging current limit until the voltage limit per cell is reached.[43]
Stage 2: Apply maximum voltage per cell limit until the current declines below 3% of rated charge current.[43]
Stage 3: Periodically apply a top-off charge about once per 500 hours.[43]
The charge time is about three to five hours, depending upon the charger used. Generally, cell phone batteries can be charged at 1C and laptop-types at 0.8C, where C is the current that would discharge the battery in one hour. Charging is usually stopped when the current goes below 0.03C but it can be left indefinitely depending on desired charging time. Some fast chargers skip stage 2 and claim the battery is ready at 70% charge.[43] Laptop battery chargers sometimes gamble, and try to charge up to 4.35v then disconnect battery. This helps to compensate internal resistance and charge up to 100% in short time.
Top-off charging is recommended to be initiated when voltage goes below 4.05 V/cell.[43]
Lithium-ion[which?] cells are charged with 4.2 ± 0.05 V/cell,except for military long-life cells where 3.92 V is used to extend battery life. Most protection circuits cut off if either 4.3 V or 90 °C is reached. If the voltage drops below 2.50 V per cell, the battery protection circuit may also render it unchargeable with regular charging equipment. Most battery protection circuits stop at 2.7–3.0 V per cell.[43]
For safety reasons it is recommended to stay within the manufacturer's stated voltage and current ratings during both charge and discharge cycles.
Hello friends,
So I just got my Note 4 and i'm wondering how long should I keep it in charge for the first time? And should I drain it on first use or charge it when it's at let's say 20%??
Thanks in advance.
14 hrs, dont drain, battery should be between 20-80% before charging in normal use, fast charge off.
@zurkx
Thanks for the reply.
Are you sure about the 14 hours??? I thought Li-ion batteries don't need that long of a charging time !!!
XeroHertZ said:
@zurkxAre you sure about the 14 hours??? I thought Li-ion batteries don't need that long of a charging time !!!
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Please happily ignore that "advices".
Use Fast charge, charging takes exactly till the battery is full, that's about 1,5 hours for a full charge.
I don't see ANY sense in charging a LiIo battery "fuller than full", just impossible nonsense.
LiIo batteries suffer of aging, slightly increased by the number of charges, highly (!) increased by overheating, not of any memory effects.
There is NO "breaking in" of the Note 4s battery, amperage of fast charge doesn't come even near the safety limits, won't cause quick degradation or overheating.
So just don't listen go the immortal myths and "ancient wisdom" propagated by people not aware of the fact that battery technology indeed changed over the decades.
Chefproll said:
Please happily ignore that "advices".
Use Fast charge, charging takes exactly till the battery is full, that's about 1,5 hours for a full charge.
I don't see ANY sense in charging a LiIo battery "fuller than full", just impossible nonsense.
LiIo batteries suffer of aging, slightly increased by the number of charges, highly (!) increased by overheating, not of any memory effects.
There is NO "breaking in" of the Note 4s battery, amperage of fast charge doesn't come even near the safety limits, won't cause quick degradation or overheating.
So just don't listen go the immortal myths and "ancient wisdom" propagated by people not aware of the fact that battery technology indeed changed over the decades.
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Click to collapse
Thanks Chefprol.I have done some research on charging the battery and have come to a conclusion that once it's charged I can use it straight away but and then drain it to 18 to 20% then charge it fully.
Chefproll said:
Please happily ignore that "advices".
Use Fast charge, charging takes exactly till the battery is full, that's about 1,5 hours for a full charge.
I don't see ANY sense in charging a LiIo battery "fuller than full", just impossible nonsense.
LiIo batteries suffer of aging, slightly increased by the number of charges, highly (!) increased by overheating, not of any memory effects.
There is NO "breaking in" of the Note 4s battery, amperage of fast charge doesn't come even near the safety limits, won't cause quick degradation or overheating.
So just don't listen go the immortal myths and "ancient wisdom" propagated by people not aware of the fact that battery technology indeed changed over the decades.
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Click to collapse
Thanks ! i tought it would be a old myth to first drain the batery and then fully load it but as far as i know its only with old phones and mp3 players and such.
hope i will get my note 4 today ! waiting for it since monday
Fast Charge is not really a useful feature for me, it just hurts the battery more in the long run
what about the thoughts on conditioning the battery?
Sent from my SM-N910C using XDA Free mobile app
There's no need to condition the battery, its a lithium battery.
If you're having battery drain issues I would suggest you clear your data cache.
ddaharu said:
what about the thoughts on conditioning the battery?
Sent from my SM-N910C using XDA Free mobile app
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this is the same guy making up stuff about the note 4 GPS being bad.
dont listen to fools.
First charge needs to be 14 hours to trickle charge the battery to full and make sure the meter is calibrated to a full battery.
fast charge does reduce battery life since it charges at higher voltage and amperage. any battery gets damaged a little by that. best is a slow charge (preferably Qi) at a normal charging voltage. Slower the better for longer battery life. if you want convenience over battery life then by all means fast charge and mess it up and replace after 2-3 years.
Who's post are you referring to?
zurkx said:
this is the same guy making up stuff about the note 4 GPS being bad.
dont listen to fools.
First charge needs to be 14 hours to trickle charge the battery to full and make sure the meter is calibrated to a full battery.
fast charge does reduce battery life since it charges at higher voltage and amperage. any battery gets damaged a little by that. best is a slow charge (preferably Qi) at a normal charging voltage. Slower the better for longer battery life. if you want convenience over battery life then by all means fast charge and mess it up and replace after 2-3 years.
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arjun90 said:
Who's post are you referring to?
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It's mine. That guy already bumped into me a while ago, now it's time for his revenge.
I'll care for that, now...
---------- Post added at 02:09 PM ---------- Previous post was at 01:32 PM ----------
zurkx said:
this is the same guy making up stuff about the note 4 GPS being bad.
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Click to collapse
So here we go; you asked for it...
My critism about the Note 4 refers to it's GPS receiver, which is "deaf" compared to the competition and shows frequent signal drops.
More here: http://forum.xda-developers.com/note-4/general/gps-close-to-unusable-t2948602
dont listen to fools.
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Indeed - have a look:
First charge needs to be 14 hours to trickle charge the battery to full and make sure the meter is calibrated to a full battery.
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I already advised to realize this is 2014 battery technology, not the ancient batteries of the past.
Short: There is no "trickle charge" with Lithium-Ion-batteries.
See this: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries - quote: "The difference lies in a higher voltage per cell, tighter voltage tolerance and the absence of trickle or float charge at full charge."
fast charge does reduce battery life since it charges at higher voltage and amperage. any battery gets damaged a little by that.
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Quote: "The charge rate of a typical consumer Li-ion battery is between 0.5 and 1C in Stage 1, and the charge time is about three hours. Manufacturers recommend charging the 18650 cell at 0.8C or less."
"C" is the capacity, 3220 mAh with our Note 4's battery. So we're save to charge with a current (milliamperes, "mA") of up to 3220 mA - if we follow the manufacturer's advice for the older type of batteries of that kind (18650 is an old warrior in the field), there's still 2576 A left.
So what does our fast charge supply deliver ? Look at it's ratings: 5 V, 2 A (2000 mA).
So even fast charge is far below the limits - our real limit is 3220 mA, but fast charging just uses 2000 mA.
Sound and safe.
Wonder about me highlighting "higher voltage" in zurkx's highly elaborate statement in red ? - Answer is above: The voltage does NOT change, it is NOT higher. Of course not !
The worst enemies of LiIon batteries are heat and age.
Heat is generated by a) placing the device at a hot spot (like behind the car's windscreen or in bright sunlight), b) by using demanding features like 4K video recording or highend games, c) by charging .
a) Your call. Just don't let your Note get hot. Overheating destroys your battery in no time. We're lucky we've got an exchangeable battery - so nothing to really worry about.
b) Your call. See a).
c) Charging produces some heat, especially on the "last mile", when the battery is "almost full", because the battery is a bit reluctant of getting charged up to the brim. So more heat is generated in that last phase. It's not much, won't reach the safety limits. It just can't, because the build-in charging circuits limits the current if heat gets up.
By the way: That integrated charging circuits are propped with safety measures, checking charge, condition, temperature and the like.
So even if you hook up a charger capable of providing 20 whopping amperes, the circuits just won't let that happen.
There is no way of providing the battery too much current; it's automatically limited.
best is a slow charge (preferably Qi) at a normal charging voltage. Slower the better for longer battery life.
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Again; welcome to the 21st century. We don't need any slow charge. It's the opposite.
Charging right slow has the danger that apps on the phone draw more power than the charge provides. That may drain your battery instead of filling it.
Plus: If you hook up the charger for long, it will be recharged (charge gets "topped off") frequenly. And every new charging attempt has a slightly negative impact on the battery's life; it's like wearing it a bit down. - Charge often, reduce your battery's life. That damage is tiny, by the way. But it is there, so hooking up your charger for many hours slowly kills your battery.
Now for the aging:
if you want convenience over battery life then by all means fast charge and mess it up and replace after 2-3 years.
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LiIon battery ARE AGING, up from the time of manufacture.
You all know that: You charge a device like you're told by the instructions - but after 1 to 3 years you notice a severe drop of usage time, a drop of capacity.
That's aging.
NOTHING you can do against that but buying a new battery.
So your battery will lose it's capacity over time; if you use it or not. You all know that, you all experienced that.
With the Note 4, we can happily buy a new battery if the old one runs out; it's that simple. But as a normal Li Ion battery reaches it's shelf live after 2 or 3 years anyway, there's NO (!) need of burdening it and you with slow charge. The results are exactly the same, with the difference that you save precious time with fast charging.
And now allow me quoting again:
dont listen to fools.
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Have a nice day, all of you except one.
youre completely wrong.
The QuickCharge tech charges at higher VOLTAGE and AMPERAGE.
http://www.androidauthority.com/quick-charge-explained-563838/
Quick Charge 2.0
Voltages 5v 5v / 9v / 12v
Max Current 2A 3A
Snapdragon 200, 400, 410, 615, 800, 801, 805
The rest is just BS as usual. You have no idea what youre talking about. Dumping 9V (Samsung Note 4 AFC) into a 5V battery makes it charge hotter and faster and degrades it significantly. After two weeks of fast charge i lost a small chunk off the top of my brand new battery.
just bad advice as usual.
zurkx said:
youre completely wrong.
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Yes, indeed. I was completely wrong by believing you'd understand some simple things.
In fact, I am not sure if I should take your statements for serious or just for a joke.
The QuickCharge tech charges at higher VOLTAGE and AMPERAGE.
Voltages 5v 5v / 9v / 12v
Max Current 2A 3A
Click to expand...
Click to collapse
So you REALLY believe that changes of the output voltage of the POWER SUPPLY lead to the BATTERY charged with more volts ?
You can't be serious. That's technically impossible.
Let's put it easy:
If you insert your power supply into a 110 V receptacle in the USA, you get 5 V output.
So according to your "logic", using the same power supply in Europe (230 V) increases the voltage to 10 V ?
No. Just NO.
That higher POWER SUPPLY voltage is used for fulfilling the rule W = V * A (Watt = Volt * Ampere); just to be able to squeeze more power through the power supply's cable.
In the Note 4 and in the charging circuit, that voltage OF COURSE will be regulated down to the regular charging voltage - just with the benefit to carry more amperes.
So the CHARGING VOLTAGE stays the same; it does NOT follow the voltage supplied by the POWER SUPPLY. It never does.
So fast charging does NOT (read that: NOT !) increase the charging voltage. It cannot.
Got that now ? - Or do I need to put it ever more simple ?
It does not help using swearing words like "fool" or "bull****".
But it could help just saying: "Oh, sorry, I was wrong. - My apologies."
Make yourself at home with the basics of lithium ion and charging technology. THEN speak up.
Ah, overlooked something:
After two weeks of fast charge i lost a small chunk off the top of my brand new battery.
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1) Hope that chunk fell somewhere you were able to pick it up again.
2) How to you KNOW that ? I expect a detailled description about how you did the magic of finding out that your battery doesn't charge to 100 %.
3) If you KNEW that fast charging would kill your battery, wise man - why did you allegedly use the feature ? - Sorry, man... Your statements are not very trustworthy. I guess you never used that feature, just say so to strengthen your shaky point of view. Please don't mess with a perception psychologist.
4) If your battery really suffered, that might be due to your highly acclaimed and absolutely pointless 14-hours-charging-marathons, causing a permanent charge on/charge off cycle, weakening your battery.
So please just stop bashing a real useful feature of the Note 4. If you just love waiting ages for batteries to charge - your preference. But please stop spreading false facts about things you very obviously are not at home with.
And a last thing which might stop that aimless harassing fire of yours: I am HAM, a licenced amateur radio operator, holding the highest German licence class. These are the people who know a bit about volts and amperes.
how hard is it for you to understand that quickcharge 2.0 outputs higher VOLTAGE and AMPERAGE to charge the battery ? The charger charges the BATTERY AT 9V 1.67A up to 50% and then switches over to the regular 5V 2A charge rate. INPUT VOLTAGE (110V or 230V) has nothing to do with OUTPUT VOLTAGE. It charges the battery at 9V REGARDLESS of INPUT VOLTAGE.
edit:
also it has nothing to do with the cable. you must be crazy if you think a cable issue exists whether you transfer 15W or 10W across it. the cable is rated for well beyond that. the reason for the higher voltage is that modern lithium ions can accept high voltage charge rates with limited damage at low amperage. the reason they cut it off at 50% is the battery would be severely damaged if you tried to charge it to 100% and overshot. so yes quickcharge 2.0 really does charge your battery at a higher voltage than it was designed to be charged at. and no they dont have a magical transformer on your phone to go from 9V to 5V. otherwise they would be using it all the time and fast charge 9V to 100%. the wall plug is the only thing which has a transformer and the phone uses what it gets from there. they arent going to build half of another wall plug (9V DC-DC) and stuff it into the phone. it would generate heat and add bulk. Instead the PMIC "spikes" the battery with higher voltage and keeps it roughly constant (load modulation) by communicating with the quickcharge 2.0 AFC on the other end.
Hopeless.
I just love these battery threads, there's always some muppet who says the battery needs conditioning and must first be charged for a suitably ridiculous length of time. When it's charged it's charged, lithium batteries have no memory effect so the idea of conditioning them is moronic
Sent from my SM-N910F using XDA Free mobile app
yes they have no memory effect. why ? because you say so.
other people believe otherwise because they actually test things out for themselves :
http://www.psi.ch/media/memory-effect-now-also-found-in-lithium-ion-batteries
http://pocketnow.com/2013/05/03/li-ion-batteries-memory-effect
http://www.nature.com/nmat/journal/v12/n6/full/nmat3623.html
no need to keep it for 14 hours, as they said in the catalog you only need to charge it till it's full, then unplug the charger.
Hello again !
After all cooled down a bit, here's some more information about that dreaded HIGH VOLTAGE fast charging uses which seemingly makes some of you wet your pants.
First, there's an experiment you can do yourself. You don't need to do - but it's quite impressive and gives you some proof of the things I say.
Get two 9 V batteries; the small rectangle ones we all know. Connect the positive contact of the first battery with the negative contact of the second. Thus you get an 18 volts DC power source.
Get a thin, isolated wire, short-circuit the open contacts with the wire. Wait.
Nothing special will happen, maybe the wire will get a little warm - and your batteries will eventually die.
(If you use a VERY thing wires, it might heat up.)
Now take a length of the same wire, do the same using your car's battery (12 – 13.8 V DC).
WARNING !
1) Take the battery out of the car, set it on solid ground with nothing combustible near !!! Do NOT try this with the battery still in the car !!!
2) Use pliers to connect the wire with the battery contacts !!!
3) Do that OUTDOORS !!!
Short-circuit the battery contacts using the pliers with the wire.
You don't need to wait. The cable will turn into a smoking, burning, white-hot thing in an instant.
Huh ? - We've got 18 V with just nothing happening, we've got just 12 V wreaking instant havoc and destruction !?
Amperage is the key !
Voltage alone does not cause the destruction, it's the amperage.
9 V batteries cannot provide sufficient amperes for killing the wire; 12 V car batteries do.
Short: High amperage kills wires, high voltage doesn't.
So back to our topic...
To fast charge our Note 4's battery, we need power, watts. But the tiny wires in the Note 4 can't withstand a high wattage; they would heat up like the wire connected to the 12 V car battery.
So Samsung uses a little trick, according to Ohm's law: W = V * A, W is watts, V is volts, A is amperes.
So we can achieve a high wattage by EITHER using a higher voltage OR a higher amperage.
Higher amperage does not work because it will kill the tiny wires in the Note.
So Samsung raised the voltage for carrying more watts from the power supply via the internal Note 4's cabling to the charging circuit.
That higher voltage gets transformed down to the normal charging voltage at the charging circuit.
Your battery is charged with the usual voltage, but with the benefits of a higher amperage.
That's all the magic: That higher voltage is used to carry more wattage to the charging circuit, but not beyond. Nothing else.
And that's why it does not harm your battery; charging voltage will not change - your battery just gets charged faster, always monitored by the charging circuit which will lower the charge accordingly if needed, so your battery will always be safe. That's why the "last mile" (charge from about 92 % to 100 %) takes more time to charge - because the charging circuit automatically lowers the charge to protect your battery.
So don't be afraid of that higher voltage; it never reaches your battery, it is just a means for transferring higher wattage via tiny wires.
Note: You ever wondered why Europeans use 230 V instead of 110 V ? - That's the reason. Being able to carry more watts over regular power lines without risking the wires heating up too much. It's not a means of destruction, it's the opposite.
Ever since I first got my Note 4, I've loved two things about it more than almost everything else: battery life and charging speed.
Two nights ago, I was bored and - I know, it's a strange thing to do when bored - decided to see how fast fast charging was compared to normal charging. It took my phone about 123 minutes to fully charge from 0 to 100% with fast charging disabled.
But that's not what I care about. What I care about is the fact that, before I disabled fast charging and fully charged my phone from 0, I would typically have about 10% left after a twelve hour cycle that included around 5 hours of screen-on time.
After my slower charge, I found that, after about 11 hours, I'd had my screen on for 4.5 hours, and my battery was still sitting at 55%. This improvement absolutely astounded me, and I want to encourage all of you to see how your mileage varies (or perhaps doesn't) by disabling fast charging.
I'd like to add that I've always been a huge proponent of fast charging, and I've always dismissed the common notion that it's bad for a phone's battery. But I can't ignore my own results.
EDIT: I should add that this was without power-saving mode or airplane mode enabled at any point in time. And the screen brightness was set to the same value I use generally, and not the minimum I'd use in total darkness.
I haven't used fast charge except for the first few days I had the phone. I just never needed my phone charged fast.
I can get about 6.5 hours of screen on time with around 20% battery left on power saving mode.
droidx2.3.3 said:
I haven't used fast charge except for the first few days I had the phone. I just never needed my phone charged fast.
I can get about 6.5 hours of screen on time with around 20% battery left on power saving mode.
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I'd had fast charge enabled until two days ago because I never saw anything but advantages to it. I also should add that I don't use power saving features until I'm down to at least down to 15%. Glad to hear you're getting good performance
I only use fast charging. If I do a heavy use day, I get about 5-5.5 hours of SOT and run out. Not sure how long it lasts.
On average, I charge my phone every third day and get 4-4.5 SOT.
I think my battery life is pretty exceptional. I don't leave the phone on the charger overnight, it gets unplugged immediately and I usually put it on the charger around 15 percent.
Yes, I"m not a heavy user usually. Depends on my work load, sometimes it only lasts two days.
I remember hearing this back in the day. Users reported that trickle charging (ie. Usb to computer) would yield better battery life.
I was curious if this would be the case when I first heard about the fast charging when the note 4 was released, but I haven't tested it yet.
http://forum.xda-developers.com/xperia-z/help/trickle-charging-improve-battery-life-t2332947
I use a spare oem battery/cradle charger. Which does not have fast charging, so the battery would technically be charged slower than through the phone with fast charging. I haven't noticed any difference in battery life between the two.
Then again, my phone usage changes by the time I swap batteries.
Sent from my Note 4.
I guess I'm different than most. It's nothing for me to kill a battery in a work day. When I'm 50% +/- I'll plug in because I never know when I'll need a full charge or where I will be an need it. When going out of town I typically will carry at least one of my two backup battery packs.
I will keep power saving mode on and my screen at full brightness. No WiFi enabled but I do use BT from time to time.
5.5 to 6 hours usage sounds about right for me. 24-48 hours on one charge and I say someone isn't using their phone enough.... LoL
Im running Pac Rom 5.1.1 on Note 4 DE and the charger definitely makes a difference.
A "normal" charger (pretty much anything under 2.1A) will charge much slower than a 2.1A charger.
mithusingh32 said:
Im running Pac Rom 5.1.1 on Note 4 DE and the charger definitely makes a difference.
A "normal" charger (pretty much anything under 2.1A) will charge much slower than a 2.1A charger.
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But have you noticed any difference in your battery life after a fast charge vs a slow charge?
Bicknasty said:
But have you noticed any difference in your battery life after a fast charge vs a slow charge?
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You guy need to repeat this charging business in a scientific test manner.
For example.
1) Discharge to 50%-80% (choose a level.)
2) Slow charge to 100%.
3) Run a loop of a video at some preset brightness, not auto, until the battery is at 50%-80% again. Note the time.
4) Fast charge to 100%.
5) Repeat 3 in the exact same way.
Then compare the times of video playback for the two charging techniques.
My guess is that if you were to do it right, you would get identical results.
nabbed said:
You guy need to repeat this charging business in a scientific test manner.
For example.
1) Discharge to 50%-80% (choose a level.)
2) Slow charge to 100%.
3) Run a loop of a video at some preset brightness, not auto, until the battery is at 50%-80% again. Note the time.
4) Fast charge to 100%.
5) Repeat 3 in the exact same way.
Then compare the times of video playback for the two charging techniques.
My guess is that if you were to do it right, you would get identical results.
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Click to collapse
You'd also have to play a movie that is stored on phone and go on airplane mode, since signal strengths change power usage of radio.
Slow and steady wins the endurance race
Owners of electric rc cars/planes often charge lipo batteries to tailor their output for various track conditions. Faster higher voltage charges are more punchy and have increased output but suffer shorter run times. Slower lower voltage = milder output and longer run times.
Jugger naut said:
Owners of electric rc cars/planes often charge lipo batteries to tailor their output for various track conditions. Faster higher voltage charges are more punchy and have increased output but suffer shorter run times. Slower lower voltage = milder output and longer run times.
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Slower or faster discharge in an electrical motor depends on how much and how fast the motor can consume energy and how quickly a battery can dispense it - this relates directly to the performance of the motor like horsepower and torque. The charge used up is still the same. The amount of electricity stored depends only on the chemical composition of the battery, not on how you charge it. So faster or slower discharge still uses up the same amount of electricity - the energy stored/dispensed remains the same.
On the other hand, in a very demanding situation like RC, a faster charge can afford a faster peak discharge rate of battery. This is due to how the chemicals in LiPo batteries undergo transformations between homogeneous and heterogeneous states depending on the rate of charge. The faster the charge, the faster the maximum rate of discharge. A common misconception is that a slower rate of charge will amount to more charge stored. That is generally incorrect. Slower charging can only benefit the useful lifetime of the battery.
A display or a cpu of a smartphone are unlike an electrical motor in that they consume the same nominal amount of energy for a given task and at a very low rate. The rate of energy consumption for a smartphone is far lower than the possible rate of discharge of the battery is has.
For example, you can charge (and discharge) a battery in smartphone like S6 in about 80 minutes (and that is still FAR slower than you can possibly charge/discharge such a battery.) But the battery will last many many hours even under the heaviest load. So slower charging is pointless for smartphones.
Hi,
I was video calling someone for a group project, and I was using a regular (not turbo) charger to charge my phone while i was at it. when I started, my phone was at 5%. Then it went to 0% and died, even though the charger was still plugged in. Is there any way to stop it from losing charge while its plugged in like this?
Use a faster charger. 5V 1A is fine to charge it when not in use but if you use it intensively like you did (screen on and high network usage) it is not enough. I would use at minimum a 5V 2A or the turbo charger.
DekkerP6 said:
Use a faster charger. 5V 1A is fine to charge it when not in use but if you use it intensively like you did (screen on and high network usage) it is not enough. I would use at minimum a 5V 2A or the turbo charger.
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You are mostly right, but the phone will not draw in excess of about 1200mA from any non-turbo charger, a larger charger is not important and will give no gain, but it doesn't hurt anything either.
The Moto X has a very large current draw off the battery when using the display actively, and at high brightness it gets almost ridiculously high, and add in intensive networking, high CPU usage (encode/decode video streams in real-time), and the power draw can easily exceed 1A or even more, so I am not surprised the battery drained while connected.
I am not an advocate of Turbo charging either, Qualcomm Quick Charge 2.0 can be hard on batteries, not in itself but the heat build up while using the device and turbo charging at the same time can easily exceed acceptable thresholds, but sometimes it is necessary with this device.
acejavelin said:
You are mostly right, but the phone will not draw in excess of about 1200mA from any non-turbo charger, a larger charger is not important and will give no gain, but it doesn't hurt anything either.
The Moto X has a very large current draw off the battery when using the display actively, and at high brightness it gets almost ridiculously high, and add in intensive networking, high CPU usage (encode/decode video streams in real-time), and the power draw can easily exceed 1A or even more, so I am not surprised the battery drained while connected.
I am not an advocate of Turbo charging either, Qualcomm Quick Charge 2.0 can be hard on batteries, not in itself but the heat build up while using the device and turbo charging at the same time can easily exceed acceptable thresholds, but sometimes it is necessary with this device.
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I remember reading that quick charge is deactivated when the screen is on (reverting back to 5V) to avoid overheating so I don't see using the turbocharger when using the phone as worst than any other charger or any better for that matter.
But yes, he shouldn't have started his chat with a MXPE at 5% battery left .
DekkerP6 said:
I remember reading that quick charge is deactivated when the screen is on (reverting back to 5V) to avoid overheating so I don't see using the turbocharger when using the phone as worst than any other charger or any better for that matter.
But yes, he shouldn't have started his chat with a MXPE at 5% battery left .
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Hmm... I hadn't heard that but it makes perfect sense. Personally, I am usually looking for a charger if my phone falls under 40% unless it's within a few hours of bed time.
Hello!
I just received my new S7 edge and boy I love it. I have charged it only twice and now as it is 11 pm and my phone is left with just 17% battery, I need to charge it.
So I usually charged my old HTC One M7 overnight, not thinking about how it might ruin or damage the battery.
But how about the S7 edge? When does the adapter in the outlet know, when to stop charging?
The S7 supports fast charging, which I am using.
But with 6 hours of sleep, won't it over-charge overnight?
Since it's still sending small electrical pulses into the battery even though it's full.
Please help me!
Charging overnight shouldn't do damage. However, try to decrease use of fast charging. It creates more heat than normal charging, and heat exposure damages the battery.
You also want to charge your battery before it hits 40%. This is due to how lithium ion batteries work. Also, most recommendations say charge only to 80%.
Anyway the gist is, basically, batteries work by ion movement, and like a machine, these ions wear out over time due to use. And similar to machines, heavy use wears them out more. You're more likely to break an engine by running it for 1 day at max rev, than running it over a month at half capacity. The smaller the depth of discharge, the lower the wear. Lab tests have concluded that when you constantly discharge from 100 to 0, it allows you betwrrn 300-500 charge cycles before it starts to break down and not hold charges. More specifically, when you reach that magic number your battery can only hold 75% of it's original charge. That's typically 1-2 years of use if you charge once a day. And heavy abusers charge more than once a day, so that decreases the time span to however many weeks it takes them to reach 500 charge cycles. Now, the increase in charge cycles is exponential, not arithmetical. So a depth of discharge to 50 before recharging will not give you 600-1000 charges. Rather it will give you 1200-1500 charge cycles. Mathematically, draining a 3600mah to zero for 300 charges gives you 1080000mah to burn through however short your battery life will be. On the other hand, using only 50% of the battery before recharging gives you 2160000mah to burn through before it expires after at least 1200 charge cycles. In other words, it stored twice more power for you to use. If you say, charge once every 24hrs, going always from 100 to 0 gives you at least 300 days. Recharging twice a day at 50% gives your battery at least 600 days of use before battery capacity deteriorates noticeably. Discharging to 75% before recharging actually gives you 2000-2500 charge cycles, making it even longer. Basically the point is, always plug the phone in when given the chance. Don't wait for 50%, or whatever. 40% is an arbitrary number actually, not sure why it's chosen. Also, this is why one of the choices to auto activate power saving in the S7 is at 50%, so that it keeps the battery up as close to 50% as possible when you get the chance to plug in.
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As for charging to 80%, this is because partial charge is better than full charge for lithium ion batteries. The ions are placed on stress to hold charges. Maximum stress is at 100% charge. And like everything else, stuff tends to break more. So not running it to 100% all the time will reduce overall stress experienced and increase the time before deterioration occurs. Personally I charge to 90%, and discharge to 40% or above. That's a 50% depth of charge, so that's good for up to 1500 charge cycles, plus whatever number of cycles the decrease in max stress gives me.
However, note that environmental temperatures also play a role in battery longevity.
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No harm in leaving it plugged in all night and charging to 100%. The phone controls the battery from being overcharged, not the charger. I've switched off fast charging on mine, as that can be hard on a battery over time and I have no need for it charge any faster than overnight.
Thanks for the info. I didnt know that. And does the battery also work better, as in gives you more SOT if you charge it like you said?
Saridas said:
Thanks for the info. I didnt know that. And does the battery also work better, as in gives you more SOT if you charge it like you said?
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No it won't. It just makes the battery last longer before it needs replacement. It's not going to affect how fast you drain your battery because that's dependent on your usage.
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