I'm interested in how I can predict the future battery life of a smartphone after a certain number of days of usage. This is somewhat important in the debate of user removable vs sealed in batteries. Or when deciding if you want to buy a phone with a sealed in battery, or when you are going to need battery service. I did not really find any such method online, so I made the following calculations myself. Please point out mistakes or errors if you see any. I have used lower case letters for variables, and upper case for constants.
Edit: Formula for calculating future battery life (including calendar loss)
I wanted to create a new formula that takes into account that batteries not only degrade when they perform work (w), but also as they age. The first I posted only took cycle loss into account. So i set up this expression that describes how the battery capacity (c) is reduced over time as the battery ages simultaneously as they lose capacity while continuously working at a constant rate:
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By dividing both sides of the equation with the rate of doing work, power (P), that is assumed constant, we get this expression:
Then doing some substituting b = c/P, B=C/P and t = w/P:
By doing some manipulation of this expression and calculating the geometric serie:
This is equivalent with:
Where:
"Degraded Battery Life" (b) is the expected lifetime of a full charge in the end of the period. The unit is usually hours (h) or days (d), and the model is valid as long as b is 0 or larger.
"Initial Battery Life" (B) is the Battery Life before the degrading has happened, unit is hours (h), and valid values is everything from 0 and up. Please note that battery life in these calculations is the overall battery life, including use during both night and day. When people talk about battery life in everyday speech, they often mean battery life during the day when the user is awake and actively using the phone.
"Time" (t) is the time period the battery has been in use. Usually measured in years, and valid from 0 and up.
"Longevity rate" (L) is fraction of battery capacity remaining after a certain time period. It's assumed to be constant. The unit is usually ^-y (y = year), for instance 0.9^-y if 90% of its capacity remains after one year. Valid values are from 0.3^-year and below 1^-year. Suggested value: It's hard to find any useful information about this, but I guess it could be about 0.9^-y.
"Degradation to work ratio" (D) is the amount of degraded capacity relative to the work performed by the battery (D = -dc/dw). Similar to L, this is also assumed to be constant. This parameter does not have a unit. If the battery is described as being able to retain a fraction R of its original capacity after N cycles, D can be calculated as: D=1-R^-N. Suggested value: For common smartphone batteries they usually retain 80% of its initial capacity after 500 cycles. This means that D is approximately 0.000444 (Or 0.0444%)
Z is a dimensionless variable approaching 0, but is different from 0. Suggested value Z = 0.0001
LaTex code for the formulas:
c=\lim_{n\to\infty}(CL^t-\sum_{k=1}^{n}D\frac{w}{n}L^{t(\frac{n-k}{n})})
(\frac{c}{P})=\lim_{n\to\infty}((\frac{C}{P})L^t-\sum_{k=1}^{n}D\frac{(\frac{w}{P})}{n}L^{t(\frac{n-k}{n})})
b=\lim_{n\to\infty}(BL^t-\sum_{k=1}^{n}D\frac{t}{n}L^{t(\frac{n-k}{n})})
b=\lim_{n\to\infty}(BL^t-\frac{L^{t}-1}{n(L^{t/n}-1)}Dt)
b=\lim_{Z\to0}(BL^t-\frac{L^{t}-1}{L^{Zt}-1}DZt)
I did some testing with the formula for values D = 0.000444 and L = 0.9^-y. Here are some examples:
Case 1: Initial battery life of 12 hours.
Currently my own battery life is approximately 12 hours. I wanted to see how it will develop if I keep the phone and battery one and two years longer:
After one year: 7 hours
After two years: 3 hours
Case 2: Initial battery life of one day (24 hours).
Many owners of new smartphones report a battery life of approximately 24 hours for a spanking new phone. I tried out the formula to check what they can expect when the phone and battery start to age:
One year: 18 hours
Two years: 12 hours
Three years: 8 hours
Case 3: Initial battery life of two days (48 hours).
I have seen some people claim very impressive battery life of their phones, up to two days on average. I find this a bit hard to believe, but lets use this number in the last example:
One year: 40 hours
Two years: 32 hours
Three years: 25 hours
Conclusions:
The first observation I make is that battery degradation is a much bigger issue for users that experience a poor battery life from the beginning. If you buy a new phone and the battery life is very good (40 hours or more), then battery will probably never really be a problem to you. In example three the battery life is acceptable even after three years. In the first example on the other hand the phone is mostly unusable after just one year. So the conclusion is that if a phone has a very good battery life from the start, then it's less important to make it removable. On the other hand, if the battery life is bad (or short) from the start, the battery should be removable to make necessary battery service easy for the user. So OEM's have the options of either putting in really large non-removable batteries or smaller removable batteries.
I'd say it would be hard due to different qualities and manufacturers.
For instance I have had a Nokia N8 and N808 that I got new batteries for each after 3 years, there was no discernable difference between the old and the new batteries, and these were used daily.
Whereas I've seen Chinese batteries with noticeable losses in 6 months.
But then Nokia didn't build obsolescence into their hardware like many seem to do these days.
Maybe the batteries of those phones where more resistant to degradation than other smartphone batteries, but I don't think its possible to have zero degradation over three years with normal usage. Its like saying that you charged the phone fully, and three days later it still had 100% charge.
I have never done "scientific" testing of how much my battery life has degraded, but I have the following information available:
The battery life of my S2 with the stock 1650 battery is approximately 12 hours with normal usage.
I have another larger battery with 3500 mAh capacity, that logically should give me a battery life of 12 hours * 3500/1650 = 25 hours.
However, I have tested the battery for a while now, and it only gives me approximately 15 hours. Thus 10 hours less that it should have given me. Still a lot better than the stock, but not as much better as i should have been.
I think the explanation is due to battery degradation. I have been using the larger battery a lot more than the stock battery, so it has lost more of its capacity. I think the 3500 battery gave me approximately 25 hours when it was new out of the box, and I think I have been using it for a couple of years now. The stock battery I have been using a lot less, maybe 6 months or so, thus it has not lost much of its capacity. So the large battery has lost 10 hours in two years, which is not so far from the predictions from the formula.
Related
Introduction
The urgent need for a spare battery for my device, I felt at time of a journey to Portugal in May this year. The trip was an independent, we have decided to prepare it without use of tour agencies. All navigation in Lisbon, searching for information on attractions, and, of course, simply communications was tied to a smartphone. It soon became clear that, in this mode, my Galaxy S barely survive until lunch. In this situation, I often turn off the phone, to somehow leave it live to the evening.
Arriving home, I tried to find out why the battery goes out so quickly. In addition to attempts to optimize the software side, I began to collect statistics on battery with Battery Monitor Widget. In the end, it turned out that the real capacity of the battery instead of the regular 1500 mAh (declared by Samsung) was a little more than 1300 mAh, ie significantly lower than the nominal.
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Conclusions for myself:
Install some phone battery saver.
Buy a spare battery.
Testing alternative battery
I did not want to buy the original battery. Its capacity could differ from declared again. I've started to read the forums, blogs, etc. I came across for a few articles, which described the alternative batteries for smartphones HTC. Both of review were about battery manufacturing company Mugen Power. I learned that there is some likelihood that the manufacturer can provide me the battery for my tests. I wrote a letter to the Mugen Power. The letter said that I am a PhD in power electronics (which is true), that I have a desire to test the battery for Samsung Galaxy S. Very soon I received a positive response. By following a few formalities and waiting a little longer than 3 weeks, I've received a packet with a battery for testing.
The geometrical dimensions of the Mugen's battery is almost the same as in original. Myugen's battery was a little thicker, but it fits in the smartphone without a problem.
In the manual for the battery, manufacturer especially requested a "training" of battery. I should "Train" it by running 5 or 4 full charge / discharge cycles. In addition, it was clarified that the charge cycle should be not less than 8-12 hours (even if the phone tells you that the battery is fully charged in less time).
I followed all of the instructions. Along the way, I do check readings Battery Monitor Widget. In the first cycle capacity was about 1200 mAh, and at the fifth it barely got over 1400 mAh. This, of course, more than have old original battery but substantially less than the stated 1600 mAh. I am wary, but decided to give it a chance for rehabilitation and went with it to vacation .
10 additional days that I spent in vacation, led to a very positive effect on the battery. Battery even exceeded its declared capacity and was equal to 1626 mAh, which is about 2% bigger from the nominal.
Indications of Battery Monitor Widget is already good, but most importantly to experience an increase in battery capacity. Indeed, smartphone living time has increased so much that night of charging it was enough for the whole day of living. Thus I can conclude that living time was increased nearly in 2 times. For the entire time of vacation I never change a battery to the old one. I always had time to get back to the hotel in the evening and put the phone on charge.
A few words about the mode of using the phone on vacation. Wi-Fi and mobile internet enabled constantly, GPS navigation for at least 2 hours a day, for about 15 minutes reading the mail, 30-40 minutes of surfing the internet, talk no more than 1 hour a day.
If less of navigation, the charge lasts for at least 1.5 days.
Conclusions
Measured capacity of the alternative battery even exceeded the nominal and was 1626 mAh.
Given the fact that the actual time of use of alternative (new) battery has almost 2 times bigger, I suppose, that the real capacity of the original (old) battery is less than 1300 mAh. For myself, I decided that in this case purchase of the original battery would not good idea, even if it is cheaper than alternatives.
In spite of everything, I highly recommend you to have a spare battery along with you on the trip.
I think that this review will be useful to many people, as the Samsung Galaxy S, despite his respectable age, is still quite popular smartphone. I will be happy to answer questions and clarify details.
PS: Name of the tested battery is "Mugen Power 1600mAh Extended Battery for Samsung GalaxyS GT-i9000 / Epic 4G / Vibrant / Captivate
[HLI-Si9000SL ]".
Mugen Power company also produces "unformatted" battery for Samsung Galaxy S with capacity 3200 mAh. I did not want to thicken up the phone, so this option is not even considered. Decide for yourself.
meredybanson said:
Did you get it from here [link removed] ?
Click to expand...
Click to collapse
Yes, exactly! This is an official site of Mugen Power.
I've found this battery on it.
1. Have you bought full version of Battery Monitor Widget?
2. When training battery, do you really need to charge for 8-12 hours, because batteries have overcharge protection?
zmagas1 said:
1. Have you bought full version of Battery Monitor Widget?
2. When training battery, do you really need to charge for 8-12 hours, because batteries have overcharge protection?
Click to expand...
Click to collapse
I use free version of Battery Monitor Widget. I simply cut out advertising banner from a screenshot.
In accompanying document exists a direct instruction to charge battery during 8-12 hours for training. See attachment below.
First and foremost I just have to say that I have been sent these batteries to test as I have been testing batteries for Anker for over 2 years. This battery has to be the best one so far. The Anker 2600mAh for the S4 has incredible battery life and lasts about 50% longer than that of the OEM Samsung battery. The charging time is the same as OEM too! When you receive the battery i suggest you complete the charge because it isn't completely charged from the factory. Great points about this better battery are:
-Actually has built in NFC for a slim replacement battery
-Battery life is just straight up longer than OEM
-I use Wi-Fi, Bluetooth, Google Maps, Skyfire, Text, and Talk on the phone literally all day long as my job permits
-Battery is the same size as the stock so no worries about the phone "bulking up"
-Dependable company for aftermarket batteries
-Brightness about half way up
Through many rigorous tests, compared to an OEM battery, this battery has lasted me about 50% longer than the standard Samsung battery. Now many of you that have the S4 already know that the S4 battery is pretty good considering the power of the phone. With the factory battery i have been able to have the phone last 20h 22m 14s. The longest this battery lasted me was 33h 07m 10s. On the heaviest day i used the phone though it was 29h 46m 58s. So that is why i am going to say at least 50% longer. The battery cells have always been quality cells provided by Anker and hold the charge over a long period of time. I am very pleased with the battery and am confident in this product as well as there 2100mAh replacement for the S4, which i will be writing about as well. For the price point and functionality of this product it would be nonsense not to make this purchase and have the battery life you need from your new powerhouse phone!
I would also like to just give a big THANK YOU to Anker for their awesome products and keep up the good work!
the stock battery is rated at 2600mah. getting 50% more battery life from another battery also rated at 2600mah seems unlikely. either something is wrong with the stock battery or anker are magicians.
That's what i thought at first but the cells are incredible in the anker. That's the first thing i buy for any phone i own(considering it has a removable battery) are spare batteries because i eat up batteries all day long. lol
2k1civicexcoupe said:
I am very pleased with the battery and am confident in this product as well as there 2100mAh replacement for the S4, which i will be writing about as well.
Click to expand...
Click to collapse
Why would they release a battery with a smaller maH rating than the OEM Samsung battery?
This whole thread is weird and is suspect.
I doubt Samsung would use sub par cells considering they are one of the largest manufacturers of top tier lithium cells. Something isn't adding up when a battery of the same capacity is claiming to get 50% more life.
I have the same battery, although I haven't really put it to the test beyond seeing that it would actually charge to 100% so I can't speak as to how much longer than the stock battery it goes.
It is slightly bigger than the original battery, though. You really have to press all the sides of the back door in at the same time to get the back to go on.
50% more is really suspect... it has the same mah rating so I figure the most would be a +10% (for increased quality). In any rate, you are getting equivalent or more than stock, which makes it a good alternative.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Every replacement Anker battery I have purchased, (Vibrant, MT4G, Sensation, GS2, GS3) has lasted longer than the stock battery. Maybe not 50% longer, but noticeably longer. An Anker is destined for my SIV as well.
I have two of these batteries on the charger at home right now getting their first charge. I'll weigh in on this tomorrow after testing
Sent from my SPH-L720 using Tapatalk 2
On german Amazon homepage we can read, that Anker batteries have nearly the same battery life.
So 50% more? I can not believe you at the moment.
I have a set of these fresh from Anker, my only complaint is that they battery width is about .5mm thicker than the stock battery, its not enough to prevent the battery door from closing, but it was enough to notice a "bulge" pressing on the back cover to see it the upper and lower of the battery corners. Ill keep them for spares, but im sticking with stock for the day to day use.
Also note, that battery life was the same if not slightly less than with stock.
50% more power on same mAh is hard to believe.
2k1civicexcoupe said:
With the factory battery i have been able to have the phone last 20h 22m 14s. The longest this battery lasted me was 33h 07m 10s. On the heaviest day i used the phone though it was 29h 46m 58s. So that is why i am going to say at least 50% longer.
Click to expand...
Click to collapse
You need to compare the batteries under the same conditions. What if for one battery you streamed music for hours and for the other battery you let it sit and do nothing? You need to run the test under the same conditions. Without that the comparison is meaningless.
Since you may not be able to let your phone sit untouched for that long, you could find an app that'll drain the battery the same way over a shorter period of time (e.g. leave it streaming music or running navigation). You may think that's a bunch of trouble to go through, but if you are a "battery tester" for Anker, then it should be standard procedure.
Excellent points everyone. I'll reevaluate the batteries over the next couple days. I did do a lot with the phone the first couple days like root debloat etc
Sent from my SGH-M919 using XDA Premium App
2k1civicexcoupe said:
First and foremost I just have to say that I have been sent these batteries to test as I have been testing batteries for Anker for over 2 years. This battery has to be the best one so far. The Anker 2600mAh for the S4 has incredible battery life and lasts about 50% longer than that of the OEM Samsung battery. The charging time is the same as OEM too! When you receive the battery i suggest you complete the charge because it isn't completely charged from the factory. Great points about this better battery are:
-Actually has built in NFC for a slim replacement battery
-Battery life is just straight up longer than OEM
-I use Wi-Fi, Bluetooth, Google Maps, Skyfire, Text, and Talk on the phone literally all day long as my job permits
-Battery is the same size as the stock so no worries about the phone "bulking up"
-Dependable company for aftermarket batteries
-Brightness about half way up
Through many rigorous tests, compared to an OEM battery, this battery has lasted me about 50% longer than the standard Samsung battery. Now many of you that have the S4 already know that the S4 battery is pretty good considering the power of the phone. With the factory battery i have been able to have the phone last 20h 22m 14s. The longest this battery lasted me was 33h 07m 10s. On the heaviest day i used the phone though it was 29h 46m 58s. So that is why i am going to say at least 50% longer. The battery cells have always been quality cells provided by Anker and hold the charge over a long period of time. I am very pleased with the battery and am confident in this product as well as there 2100mAh replacement for the S4, which i will be writing about as well. For the price point and functionality of this product it would be nonsense not to make this purchase and have the battery life you need from your new powerhouse phone!
I would also like to just give a big THANK YOU to Anker for their awesome products and keep up the good work!
Click to expand...
Click to collapse
Screenshot or it didn't happened. Since you said 50% longer, I would assume you get 40 hours with about 8 hours of screen time. Correct?
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Think about buy anker 3e or 3 10k. Will ot work on galaxy s4
Sent from my SGH-M919 using Tapatalk 2
anker
same specs same amp and voltage
its maybe 10% more i don't belive it's more than that
Please post screen on time as well. Thanks.
2k1civicexcoupe said:
View attachment 1971258
Sent from my SGH-M919 using XDA Premium App
Click to expand...
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That does not prove anything. Your device has been idle most of the time. I call it BS on the 50% more juice. It has to take some breakthrough technology to get that much juice with the same size battery. So nice try.
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How To Take Care of Your Smartphone Battery the Right Way
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Lets get started how to take care of your Smartphone's battery and the following tips are going to be explained here:
Top it off
Keep it cool
Avoid wireless charging
Never go to zero
Don't sweat it too much
Top it off:
You may vaguely recall hearing something about rechargeable batteries and the ""memory effect."" You know, that if you don't ""teach"" your rechargeable batteries their full potential by taking them from totally full to totally empty, they'll ""forget"" part of their capacity. Well forget all that. Right now. It's wrong.
battery memory is real thing, but it applies to nickel-based batteries; your trusty sidekick (literal Sidekick or otherwise) doubtlessly has a lithium-ion battery, and it needs to be treated a little differently. Specifically, it should be topped off whenever you get the chance.
To get the most out of a lithium-ion battery, you should try to keep it north of 50 percent as much as possible. Going from all the way full to all the way empty won't help at all; in fact, it'll do a little damage, and it's even worse if do a full drain on a regular basis. It won't make your battery explode or anything, but it will shorten its lifespan.
But! You don't want to have it charging all the time either; lithium-ion batteries can get overheated. Luckily for you, your charger is smart enough to help with this, and will cut your phone off for a spell once it's full. And to complicate matters a little further your battery doesn't particularly like being all the way full either. In fact, your battery will behave the best if you take it off the charge before it hits 100 percent, and leaving it plugged when it's already full is going to cause a little degradation.
So if you're really particular about optimizing your battery's life, you should try to go from around 40 percent to around 80 percent in one go, and then back down whenever possible. A bunch of tiny charges isn't as bad as going from 100 down to zero all the time, but it's not optimal either.
Keep it cool:
It's easy to worry about bad charging habits thanks to the training we've had from old rechargeable batteries, but lithium-ion batteries have a worse enemy: heat. Your smartphone's battery will degrade much much faster degrade much much faster when it's hot, regardless of whether it's being used or just sitting around doing nothing.
At an average temperature of 32 degrees Fahrenheit, a lithium-ion battery will lose six percent of its maximum capacity per year. At 77 degrees, that number jumps to 20 percent, and at 104 degrees it's a whopping 35. Sure, it's not exactly practical (or sane) to keep your phone in the fridge, but it's worth going out of your way to prevent long stays in hot cars and the like.
Avoid wireless charging:
Wireless charging is can be incredibly convenient if your phone can do it, but it's not without its disadvantages. The inductive, wireless chargers out there today have this nasty habit of generating a fair bit of waste heat. And while wasted energy is just a bummer in general, that heat will also toast your battery in the process. That's no bueno. It's a little less convenient, but standard plug-in charging is going to keep your battery in better shape, especially if you're some place warm to begin with.
Never go to zero:
Obviously, using your battery is going to make it degrade. But it's going to slowly die even if you just leave that iPad in the closet for a bit. There's a trick to minimizing that inevitable aging though: leave it a little bit of juice.
If you're going to be shelving any lithium-ion battery for a long time, try to leave it with at least 40 percent battery power to tide it over. Lithium-ion batteries don't hemmorage power at 30 percent a month like nickel-metal-hydride batteries do; they'll lose maybe five to ten percent of their charge each month.
And when lithium-ion batteries get too low-like, literally zero percent-they get seriously unstable, and dangerous to charge. To prevent explosion-type disasters if you do try to charge one, lithium-ion batteries have built-in self-destruct circuits that will disable (read: destroy) the battery for good, if it reaches rock bottom. And sure, that'll save you from a face full of battery-acid, but it'll also leave you short one battery.
Don't sweat it too much:
It's easy to get protective of your battery, but it's also easy to get lazy. And that's fine, because as long as you're not a complete idiot, you'll be OK. Typically, a lithium-ion battery lasts for three to five years, and chances are you're going to want to swap out your gadgets sometime in that window anyway. The slight damage of a technically bad idea like leaving your phone plugged in all night every night, or using wireless charging, might be worth the convenience.
Still, it's pretty easy to keep your battery reasonably healthy just by avoiding particularly egregious torture like letting your phone discharge from full to zero every single day, or leaving it in a hot car all the time. And the next time you make it back home with power to spare, you'll thank yourself for it.
These are one of the best ways to make your battery more efficient....
Courtesy: gizmodo.com
Please Visit http://www.gizmodo.in/
Also check out en.wikipedia.org: Lithium-ion battery - Battery life for further information
PolarCell 3400mah Note 4 Battery Review
You always wanted some extra power “juice” for your smartphone, even with the Note 4 which has very good battery life.
PolarCell sent me their Note 4 Battery with 180mah more capacity compared to the OEM Samsung battery.
Lets get started and see how it looks…
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The battery itself has a simple minimalistic Design and matches with my White Note 4 very well.
It weights 1 gram more than the OEM battery and fits perfectly on the phone
Battery Life
Compared to the OEM Samsung’s original battery the battery life of PolarCell was as I expected , same SOT(screen on time) with more idle time .
Day 1 :
On first day use without calibration I managed to get 4hours and 30minutes of SOT from a full charge with almost 23hours in total use.
And I had 13% of battery juice left, that means I could get easily 30minutes more of SOT with Power Saving ON
Day 2 :
Day 2 was better I managed to get 1day and 5 hours from a single charge and 4hours and 20minutes of SOT and I had 15% more battery to spend.
I found myself browsing and using social apps a lot.
Later on you will see Day 3 and 4 , nothing different there just using Whatsapp,Viber,Browsing,Facebook,Instagram and Snapchat a lot and 3G/4G is ON most of the time.
Day 3 :
Day 4 :
Gamebench
Running Asphalt 8 on Gamebench shows the exact same results with both batteries.
Galaxy Note 4 (Snadpragon 805, SM-N910F)
Median FPS: 42
FPS stability: 65%
Battery Life: 4h 12m
Pros :
- Can charge wirelessly
- Slower draining
- Higher total wake on times
- NFC Compatible
- It doesnt add any extra bulk, fits perfectly
Cons :
- I really don’t see any con on this product , there is nothing wrong buying a higher capacity battery in the same size.
Conclusion :
The battery is just an upgraded version of the OEM one, I barely noticed any difference. Its always better to have more capacity , but it always depends on how you use your phone.
With this battery you will NOT get more SOT time, you will just get higher Total wake on times.
I noticed that when the status of the Note 4 is idle the battery is draining slower compared to the original battery.
I will stick with this battery because I get better total wake up times, so far the product seems very reliable and stable. Works fine with the QiReceiver and can charge wirelessly.
Overall the product has a German – premium – quality that only gives you extra benefits. I recommend this battery to anyone.
You can get your own battery from here :
ebay link
thanks for the review. I'm expecting my Note 4 to arrive in about 2 weeks from today so I will probably get this extra battery as well
i assume this battery does not quick charge(qualcomm chip). i have not seen any after market batteries that do contain
What is the ROM and Kernel you are using?
Thanks
So with this Batterie i can not use fast charging? I am right?
Gesendet von meinem SM-N910F mit Tapatalk
I too am curious about fast charging, as well as if you are using any custom ROMS or kernels. My ATT Note 4 can only use stock stuff.
Also, some other questions:
Does the battery fit properly in the phone? ie, no wiggling, sliding, etc?
Does the battery heat up any more than stock?
And finally, does the phone register the correct battery level? ie, the battery level doesn't decrease normally, but then stay at, say, 5% for a few hours. OR, the battery percent doesn't decrease and then magically increase a few % randomly?
Sent from my SAMSUNG-SM-N910A using Tapatalk
The fast charging is a very good question, as it would limit the capabilities of this battery.
I have also noticed in your comments that you mention wireless charging, but couldn't find the info anywhere on the ebay page or when googling for the battery.
Can you please confirm this is working as well?
Thank you.
I emailed the Polarcell seller via Ebay to ask 2 questions.
First- in case anyone is interested- this battery will work in any Note 4 using the EB-BN910BBU model of battery. This should include the US Verizon, T-Mobile, Sprint, and AT&T versions of the phone.
The second question was in regards to the fast charging. The guy said that it does work, but it isn't recommended. To me, the reason for not recommending it had nothing to do with the battery itself, but rather the long-running debate of whether fast charging affects battery life (speed of drain) or long-term battery health (battery degradation over time).
His response:
"Regarding the fast charging: it works with our battery but in general we do not reccomend it. Fast charging does not use the whole capacity of the battery and the overall performance is not as good as using regular charging."
So there we have it.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Update:
I just ordered one. It will be here in a few weeks since it's coming from Germany and I live in the US.
I'm really interested in the longer standby time since I average about 2hrs of SOT every day, so more standby time would be nice.
Sent from my SAMSUNG-SM-N910A using Tapatalk
bobn said:
i assume this battery does not quick charge(qualcomm chip). i have not seen any after market batteries that do contain
Click to expand...
Click to collapse
Fast charging chipset is imbedded in your Note4. this battery just accepts whatever the phone provides it in terms of power. Fast charging has been there for decades but it can easily overheat a battery and shortens it's lifespan. It's recommended to use slow charging and charge overnight, slow charging stays a tad longer by the way, but just a tad.
Hey guys, I just got my battery about 2 hours ago. I charged my phone while eating dinner (normal charge, not fast charge), and took the phone off the charger at about 92%. I've been on Tapatalk now for about 16 minutes and have only lost 2% battery. With my stock battery, I think drain was a little faster.
I can't make conclusions yet though. I will need until Friday night to tell for sure whether this battery is any good. During weekdays, I use my phone about the same way every day, so I tend to come home with about the same amount of battery left. So I'll easily be able to tell how this new battery compares to the stock one.
I will say this though:
I've bought a few "slim extended batteries" before for other phones. All turned out to be Chinese low quality batteries. They tend to be some cheapo plastic battery with a sticker wrapped around them. This Polarcell battery is really nicely made though. It has similar build quality as the stock battery, and the label is printed directly onto the metal casing of the battery. I'm impressed with the build quality at the very least so far.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Very nice
My note 4 gives me 4 hours and 30 minutes of SOT. I was hoping this one lasts much longer than 5 hours.. but still 5 hours and little bit more is still good..
haidar7 said:
My note 4 gives me 4 hours and 30 minutes of SOT. I was hoping this one lasts much longer than 5 hours.. but still 5 hours and little bit more is still good..
Click to expand...
Click to collapse
I guess I can report back now.
First of all, 3400mAh isn't that much more than 3220mAh. So it lasting "much longer" than the stock battery is an overly high expectation.
I pretty much use my phone the same way every day, with the exception of the occasional higher-than-usual day. I pretty much end my day with 5% more battery than with stock. I can't give you a SOT estimate since I usually end my day with about 2-3 hours of SOT and between 20-30% battery remaining.
Overall, the battery does last a little bit longer than stock, but nothing amazing. However, the build quality of the battery is excellent. It's not a cheap Chinese battery made of plastic. This thing is of equal or higher quality to the OEM battery!
Sent from my SAMSUNG-SM-N910A using Tapatalk
spexwood said:
I guess I can report back now.
First of all, 3400mAh isn't that much more than 3220mAh. So it lasting "much longer" than the stock battery is an overly high expectation.
I pretty much use my phone the same way every day, with the exception of the occasional higher-than-usual day. I pretty much end my day with 5% more battery than with stock. I can't give you a SOT estimate since I usually end my day with about 2-3 hours of SOT and between 20-30% battery remaining.
Overall, the battery does last a little bit longer than stock, but nothing amazing. However, the build quality of the battery is excellent. It's not a cheap Chinese battery made of plastic. This thing is of equal or higher quality to the OEM battery!
Sent from my SAMSUNG-SM-N910A using Tapatalk
Click to expand...
Click to collapse
Thanks alot for ur reply.. i still find it a very interesting battery and i am thinking about ordering it..
haidar7 said:
Thanks alot for ur reply.. i still find it a very interesting battery and i am thinking about ordering it..
Click to expand...
Click to collapse
You should you will be just another happy customer
Sent from my SM-N910F using XDA Free mobile app
patriotaki said:
You should you will be just another happy customer
Sent from my SM-N910F using XDA Free mobile app
Click to expand...
Click to collapse
Yeah, it's a good battery. It just won't give you any amazing increase in battery life. It does increase life a little bit, but not by hours.
Sent from my SAMSUNG-SM-N910A using Tapatalk
yep... as mentioned in my review you dont see big improvement in battery life , you just get some extra juice and it works better in idle mode
I also bought this battery several days ago from the same store on eBay Germany as you all..
Checking the amperage, did you guys mange to find an application to show the real 3400 mAh value on battery proprieties?
Using system settings and CPU-Z, PhoneInfo or AIDA64 still showing as 3220mAh. Is this OK?
Today I ordered this battery. When I will receive battery I will do complete report etc... Also I receive notice that it will be send from Germany.
Sent from my SM-N910C using XDA-Developers mobile app
Waiting for you review man.
Hi, did anyone try 1100 mah battery for Huawei Watch 2? I found it on aliexpress, stock battery is 420mAh and it's not enough for a normal use. 1100 mAh should be better but i'm scared it can burn or damage the watch? Anyone has been more brave than me?
Well, nobody answered, but I can tell you it's 100% scam.
Physically it's impossible to build such small battery with such capacity.
It's interesting that this seller has sold 39. But they sell HW1 and HW2 1400mah and 1100mah respectively. Their batteries are a lot more expensive then the regular 420mah batteries. SO it does make me wonder if these are higher capacity batteries.
If there is room for a slightly thicker and bigger battery than the original then it is possible to archive a higher capacity. Though 1100mah seems pretty ridiculous I would be curious to know what the true capacity is.
https://www.aliexpress.com/item/4000064765335.html?spm=a2g0o.productlist.0.0.6e5e34e5WZwVG9&algo_pvid=8ce39039-e18d-451d-bce1-3c42cf1de700&algo_exp_id=8ce39039-e18d-451d-bce1-3c42cf1de700-1
mrlb said:
It's interesting that this seller has sold 39. But they sell HW1 and HW2 1400mah and 1100mah respectively. Their batteries are a lot more expensive then the regular 420mah batteries. SO it does make me wonder if these are higher capacity batteries.
If there is room for a slightly thicker and bigger battery than the original then it is possible to archive a higher capacity. Though 1100mah seems pretty ridiculous I would be curious to know what the true capacity is.
https://www.aliexpress.com/item/4000064765335.html?spm=a2g0o.productlist.0.0.6e5e34e5WZwVG9&algo_pvid=8ce39039-e18d-451d-bce1-3c42cf1de700&algo_exp_id=8ce39039-e18d-451d-bce1-3c42cf1de700-1
Click to expand...
Click to collapse
I ordered it, will test
I ordered it too and it arrived yesterday.
I installed the battery but I broke one of the plastic luggs off the watch that allow the strap to clip in so all my testing so far is in "off wrist-mode" which disable's the AMOLED hafter a period off time. I am making this clear as my watch is showing me i am likely to get 3-4 days of usage. Previously it was 1-1.5 days. This all made me very excited. However I ran some debugging tests on ADB, specifically:
adb shell
dumpsys batterystats | grep "Capacity:"
Estimated power use (mAh):
Capacity: 410, Computed drain: 114, actual drain: 65.6-69.7
uevent
[email protected]/devices/platform/soc/78b9000.i2c/i2c-5/5-0036/power_supply/bms
ACTION=change
DEVPATH=/devices/platform/soc/78b9000.i2c/i2c-5/5-0036/power_supply/bms
SUBSYSTEM=power_supply
POWER_SUPPLY_NAME=bms
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_ONLINE=1
POWER_SUPPLY_CYCLE_COUNT=65
POWER_SUPPLY_VOLTAGE_MAX=4380000
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3200000
POWER_SUPPLY_VOLTAGE_NOW=4389062
POWER_SUPPLY_VOLTAGE_AVG=4388828
POWER_SUPPLY_VOLTAGE_OCV=4165390
POWER_SUPPLY_CAPACITY=84
POWER_SUPPLY_CHARGE_FULL=408
POWER_SUPPLY_CHARGE_NOW=342
POWER_SUPPLY_TEMP=201
POWER_SUPPLY_TEMP_ALERT_MIN=1280
POWER_SUPPLY_TEMP_ALERT_MAX=1270
POWER_SUPPLY_TEMP_MIN=-450
POWER_SUPPLY_TEMP_MAX=1000
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_CURRENT_NOW=147108
POWER_SUPPLY_CURRENT_AVG=148668
POWER_SUPPLY_DEV_NAME=0x4010
SEQNUM=3246
It's not reassuring to see the capacity listed as 410mah. I assume the watch reads the capacity from the battery itself as opposed to capacity being hardcoded in the rom/os. I suspect because it's a new battery that the health / capacity it much better than the older (4yr older) battery which is replaced. But also because the watch is "off-wrist" I am going to see better performance.
As for the second command above I am little unsure how to interpret it. i thought maybe these were reference to total and current mah
POWER_SUPPLY_CHARGE_FULL=408
POWER_SUPPLY_CHARGE_NOW=342
What are your findings? ad14051991
My lug broke off and I only fixed it yesterday so only testing battery life now.
mrlb said:
What are your findings? ad14051991
My lug broke off and I only fixed it yesterday so only testing battery life now.
Click to expand...
Click to collapse
How was your test ?
oliverlevan said:
How was your test ?
Click to expand...
Click to collapse
My first test I left it off my wrist and it lasted 4 days. But I think when it's off wrist it goes into power saving mode because it doesn't need to detect heart-rate (if enabled) however I still felt 4 days was an improvement.
But then I left the watch battery flat for 2 months. Fixed the lugged and started wearing the watch again. The last 2 charges have lasted about 2 days. Which is similar to what I was getting with the stock battery.
I am unsure if leaving the battery flat for 2 months has done any damage or change to the capacity. But since it was a new healthy battery I imagine it hasn't. Perhaps I need to leave the watch off wrist again and see if I get 4 days still.
I guess results are still inconclusive at this time.
Please keep us posted with the testing.
Double the battery capacity would be the best improvement.
Thanks for sharing!
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I side loaded accubattery which calculates the mAh drain vs percentage of battery added whilst charging. I have only run it down once but the results were better. 481 vs 410. Still way off 1100mAh but I'll see how it goes the next few drains.
emcom said:
Well, nobody answered, but I can tell you it's 100% scam.
Physically it's impossible to build such small battery with such capacity.
Click to expand...
Click to collapse
^Spot on.
OP, just be glad it's seems within the OEM capacity range...
i have also changed the battery with an standard capacity one, and got the same results. however lost the heart rate monitor :-( and couldn't identify why....