Related
Hi to all,
I just wanted to make a debate about the real capacity of our phones batteries.
That's because I found an app that allows us to measure the real capacity and I found a quite astonishing result: it seems like my battery has the same behaviour as a 2200mAh ones!
In fact, with all connection active (Bluetooth, Wifi, LTE, synchronization..) I barely reach 3h of SOT daily.
I used 3C toolbox (https://play.google.com/store/apps/details?id=ccc71.at.free) using the instructions in this answer (https://android.stackexchange.com/q...ity-of-a-battery-in-mah-received-fake-battery in "How to measure actual capacity using 3C Toolbox").
Also if you can advise different apps and methods to do this, I would be very happy.
Thanks to all!
The real battery capacity is the advertised one. 3000-3080mAh.
Xiaomi uses lower binned batteries which degrade a bit faster over time. An app can't measure the real battery capacity or estimate it accurately. The SOC we have is power hungry and inefficient, that's why it's so hot too.
I think it's 1500 mah or something like that. I get only 2 or 2.5 hours screen on time. The results has been never changed which i've tried several roms.
Cozzmy13 said:
The real battery capacity is the advertised one. 3000-3080mAh.
Xiaomi uses lower binned batteries which degrade a bit faster over time. An app can't measure the real battery capacity or estimate it accurately. The SOC we have is power hungry and inefficient, that's why it's so hot too.
Click to expand...
Click to collapse
Well, the app don't measure the battery capacity, but how much current flows in when it's charging.
So you're saying that the main problem is the age of the battery..
Do you think that changing battery may improve the result?
3h sot is normal, when used from morning till evening. When used continually, I get 5-6h sot. An app cannot accurately measure battery capacity. This phone, like many others, is built to last a day with moderate usage...
Brunnys said:
Hi to all, I just wanted to make a debate about the real capacity of our phones batteries.
...
Also if you can advise different apps and methods to do this, I would be very happy. Thanks to all!
Click to expand...
Click to collapse
Hello, this is a very interesting topic, so I decided to check the real capacity of my Mi4c's battery with one of these. When the phone turned off at 0% I recharged it to 100%, while still off, with the following result: 1.76Ah @ 8.8V as I was using a QC2 charger. Let's translate it to the battery's 3.8V assuming 80% charging circuit conversion efficiency:
Code:
((8.8 * 1.76) / 3.8) * 0.8 = 3.2Ah
My battery is 6 months old and seems to be slightly better than specified.
If you use a 5V non-QC charger try one of these to measure it and assume higher 90% efficiency. Android battery apps are useless, please check it out with a hardware meter...
:highfive:
I'm already running third battery with my mi4c, all three tested with a similar hardware meter:
1. original battery, but already with signs of being worn out (shutdowns, sudden voltage drops) ~12Wh, not tested as being new
2. aliexpress replacement (getting worn out after 3months of use) ~13Wh
3. some battery I've got at local online shop that seller claims to be original (not 100% sure, but dimensions and weight match the original one) - sligthly over 14Wh
4. -another mi4c, as it was brand new- just over 14Wh from empty to max; surely the battery is in good condition as the one can reach 6h SoT
and I've tried different chargers (QC,non-QC) and no go - no way to see 15Wh or more being transmitted in one charge on both mi4c's I've got at home
Find out about battery behaviour of Nexus 5x, as its specs are very similar to mi4c's and compare battery capacity and standby/sot
andrei80 said:
Find out about battery behaviour of Nexus 5x, as its specs are very similar to mi4c's and compare battery capacity and standby/sot
Click to expand...
Click to collapse
And our battery behavior is a lot better.
Should I consider the values from /sys/class/power_supply/bms/ valid?
charge_full = 1983000
charge_full_design = 3071000
Does that mean that my battery capacity is now only ~2000 mAh?
EDIT:
charge_now_raw reports 2952776 when my battery level is 98%. So something is definitely wrong there.
Writing more stats for comparison:
cycle_count: 20430
resistance: 279541
esr_count: 63
voltage_now: 4223995
voltage_ocv: 4323094
capacity_raw: 9495
adamuadamu said:
...and I've tried different chargers (QC,non-QC) and no go - no way to see 15Wh or more being transmitted in one charge on both mi4c's I've got at home
Click to expand...
Click to collapse
Your results are fine but you're not accounting for the efficiency of charging which also decreases with higher...
charger's voltage
meter's internal resistance
connecting cable and contacts resistance
My 15.7Wh on the meter is actually around 15.7*0.8=12.5Wh on the battery.
Ydraulikos said:
Should I consider the values from /sys/class/power_supply/bms/ valid?
Click to expand...
Click to collapse
Some of them are definitively valid, others depend on type/firmware version of the control chip integrated in your battery. Here are mine:
Code:
POWER_SUPPLY_NAME=bms
POWER_SUPPLY_CAPACITY=51
POWER_SUPPLY_CAPACITY_RAW=5143
POWER_SUPPLY_CURRENT_NOW=432278
POWER_SUPPLY_VOLTAGE_NOW=3837410
POWER_SUPPLY_VOLTAGE_OCV=3874031
POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4400000
POWER_SUPPLY_CHARGE_NOW=0
POWER_SUPPLY_CHARGE_NOW_RAW=1481002
POWER_SUPPLY_CHARGE_NOW_ERROR=98504
POWER_SUPPLY_CHARGE_FULL=3101000
POWER_SUPPLY_CHARGE_FULL_DESIGN=3071000
POWER_SUPPLY_TEMP=285
POWER_SUPPLY_TEMP_COOL=0
POWER_SUPPLY_TEMP_WARM=450
POWER_SUPPLY_RESISTANCE=110778
POWER_SUPPLY_RESISTANCE_ID=50306
POWER_SUPPLY_BATTERY_TYPE=x11_atl
POWER_SUPPLY_UPDATE_NOW=0
POWER_SUPPLY_ESR_COUNT=64
POWER_SUPPLY_VOLTAGE_MIN=1
POWER_SUPPLY_CYCLE_COUNT=0
It was measured with the power gauge at around 55%. My CYCLE_COUNT is surely higher than 0 after 6 months of use, and your CYCLE_COUNT=20430 is simply impossible
I'd more believe your charge_now_raw = 2952776 than charge_full = 1983000.
Incidentally, the simplest way to get these stats is from TWRP in ADB:
Code:
adb shell cat /sys/class/power_supply/bms/* > bms.txt
Hey guys, long time no see
I did not see the thread, but i went on with my speculations on the same matter.
I bought this from amazon https://www.amazon.it/gp/product/B00NPVZHAO/ because i wanted to test my day-one mi4c battery.
It has roughly one year and a half.
Well...from 0 to 100% it gets a whopping 1617 mAh (see the attachment).
I was disappointed, but hey, maybe i had a degraded battery to start with, and since i never measured before i went on to buy a new original one.
Well, yesterday it arrived. changed it, discharged to 0%, charged to 100%.
Okay, it's only the first cycle, but...
1800 mAh
I guess advertised capacity is a long way from the real one?
After all, if this is correct my old battery degraded by 10% in 18 months...and that's realistic.
Please tell me i'm wrong.
I bought it for this job and I wait. But unfortunately there is not much hope
Nexus 5x has very similar specs and very similar SOT. Also, the original qc charger is supposed to charge using 5v,9v and 12v, not only 5v. What does that say about your research? Either both manufacturers lie, or you're doing something wrong.
I get anywhere from typical 3h(usage from morning till night) to 6h(continuous movie watching using streaming). For the record...
andrei80 said:
Nexus 5x has very similar specs and very similar SOT. Also, the original qc charger is supposed to charge using 5v,9v and 12v, not only 5v. What does that say about your research? Either both manufacturers lie, or you're doing something wrong.
I get anywhere from typical 3h(usage from morning till night) to 6h(continuous movie watching using streaming). For the record...
Click to expand...
Click to collapse
I took the photo with the phone disconnected, but i remember that during charging it's at steady 8.91 v and 1.02 A
I'll take new pics after some charge cycles with the new battery and post the results.
alterbang said:
Well...from 0 to 100% it gets a whopping 1617 mAh (see the attachment).
I was disappointed...
I guess advertised capacity is a long way from the real one?
Please tell me i'm wrong.
Click to expand...
Click to collapse
Yes, please read my earlier post in this thread.
alterbang said:
I took the photo with the phone disconnected, but i remember that during charging it's at steady 8.91 v and 1.02 A
Click to expand...
Click to collapse
Code:
((8.91 * 1.617) / 3.8) * 0.8 = 3.03Ah
Which is exactly as advertised by the manufacturer.
No need to change batteries, your SOT is low because of the awful apps you use. For example, did you know that "uninstalling Facebook app saves up to 20% of Android battery life"? You can still use FB and its notifications without the app - read the article.
k23m said:
Code:
((8.91 * 1.617) / 3.8) * 0.8 = 3.03Ah
Which is exactly as advertised by the manufacturer.
Click to expand...
Click to collapse
Thanks @k23m, i felt like a student again but after reviewing your formula you are right.
I though the tool's mAh measurement were already adjusted for the battery's voltage, but as you showed we still need to do some math.
I guess that i didn't need a new battery after all, but now that i have one it's certainly better!
I don't have issues with SoT, i do 5-6h on TS CM13 (i stay on marshmallow for xposed) but i just wanted to test battery degradation.
I will still post new battery results after a few cycles.
alterbang said:
Hey guys, long time no see
I did not see the thread, but i went on with my speculations on the same matter.
I bought this from amazon https://www.amazon.it/gp/product/B00NPVZHAO/ because i wanted to test my day-one mi4c battery.
It has roughly one year and a half.
Well...from 0 to 100% it gets a whopping 1617 mAh (see the attachment).
I was disappointed, but hey, maybe i had a degraded battery to start with, and since i never measured before i went on to buy a new original one.
Well, yesterday it arrived. changed it, discharged to 0%, charged to 100%.
Okay, it's only the first cycle, but...
1800 mAh
I guess advertised capacity is a long way from the real one?
After all, if this is correct my old battery degraded by 10% in 18 months...and that's realistic.
Please tell me i'm wrong.
Click to expand...
Click to collapse
Where did you get the original battery? There are always fake on the internet.
mendocino_610 said:
Where did you get the original battery? There are always fake on the internet.
Click to expand...
Click to collapse
ebay battery seller with 20k feedback 99%+ positive.
I never saw the oem parts of xiaomi on the internet but I dont know i hope this original.
I searched this before posting, but the thread had no replies from January so hoping I can gain some insight and clarification on this.
I am new to Android and avoided it for a long time due to being perfectly satisfied with my Blackberry Q10. However a few years ago, I was intrigued by the original Pixel and knew whenever I switched , if I went Android it would be a Pixel. It ended up being a Pixel 2.
I say this because I spend a lot of time googling and researching before i ask a question to make sure i am as familiar as possible before i ask something that can be found just as fast on my own.
That being said, i can't find an answer to "What is a typical capacity loss over a number of months...?"
I just got the phone in January. Didn't know anything about capacity until i noticed a huge drop in expected battery time after unplugging my phone. It used to be 21-23 hours expected from 100%. Now its only about 10-15 hours, depending on the day. Researched batteries and learned about Accubattery. Looked at the health and saw i'm only at 2284 our of 2700. It says GOOD health..but is that really good health after only 3 1/2 months? Also..unfortunately i have no idea what the original real life capacity was because i never checked until End of March when i discovered Accubattery.
Just wondering should i return the phone or accept this level of battery. At this rate..does't seem like I will get through a year on this phone.
ADDITIONAL INFO - I have used 3rd party charging cables (Nekteck)and Samsung bricks. The cables give me roughly the same amount of juice as the charger that came with the phone ( around 1300 Mah max, more juice if I'm charging from a lower percentage start point )
Tone96 said:
I searched this before posting, but the thread had no replies from January so hoping I can gain some insight and clarification on this.
I am new to Android and avoided it for a long time due to being perfectly satisfied with my Blackberry Q10. However a few years ago, I was intrigued by the original Pixel and knew whenever I switched , if I went Android it would be a Pixel. It ended up being a Pixel 2.
I say this because I spend a lot of time googling and researching before i ask a question to make sure i am as familiar as possible before i ask something that can be found just as fast on my own.
That being said, i can't find an answer to "What is a typical capacity loss over a number of months...?"
I just got the phone in January. Didn't know anything about capacity until i noticed a huge drop in expected battery time after unplugging my phone. It used to be 21-23 hours expected from 100%. Now its only about 10-15 hours, depending on the day. Researched batteries and learned about Accubattery. Looked at the health and saw i'm only at 2284 our of 2700. It says GOOD health..but is that really good health after only 3 1/2 months? Also..unfortunately i have no idea what the original real life capacity was because i never checked until End of March when i discovered Accubattery.
Just wondering should i return the phone or accept this level of battery. At this rate..does't seem like I will get through a year on this phone.
ADDITIONAL INFO - I have used 3rd party charging cables (Nekteck)and Samsung bricks. The cables give me roughly the same amount of juice as the charger that came with the phone ( around 1300 Mah max, more juice if I'm charging from a lower percentage start point )
Click to expand...
Click to collapse
Stop apps from running in the background. Your WhatsApp, Facebook, Marco Polo, weather widgets, etc are using your battery.
Sent from my Pixel 2 using Tapatalk
I don't have many running in the back. I don't have Marco Polo or Whatsapp. All my others I shut down to and when I check apps are using very low percentage. But my question is more the battery health reading. is 2200 healthy after 3 months use?
Is the phone battery actually draining twice as fast now or is the battery reporting just wrong?
The phone seems to behave normally, but being I'm not an Android user for long I don't know what normal is. I know things differ phone to phone. If I use my screen and read articles the battery drains fast to me. Compared to others who consider reading as light use. I get "better" life if I watch videos. I suppose because I'm not touching the screen. Streaming I can do for hours. I think what I'm trying to understand is...how accurate and important is a battery capacity reading? Should I be concerned that it says im only getting around 2200 out of 2700? For an almost phone I would think the capacity would be closer to the design capacity?
Tone96 said:
The phone seems to behave normally, but being I'm not an Android user for long I don't know what normal is. I know things differ phone to phone. If I use my screen and read articles the battery drains fast to me. Compared to others who consider reading as light use. I get "better" life if I watch videos. I suppose because I'm not touching the screen. Streaming I can do for hours. I think what I'm trying to understand is...how accurate and important is a battery capacity reading? Should I be concerned that it says im only getting around 2200 out of 2700? For an almost phone I would think the capacity would be closer to the design capacity?
Click to expand...
Click to collapse
Take a screen shot of the reduced battery capacity reading and send it to Google's customer service from your support menu in the system settings.
Hi, just wanted to ask if someone else beside me and my friend got a 3000mAh battery (According to accubattery) after a couple of months, the same happened to another friend of mine with a OnePlus 6T, 3450mAh instead of 3700mAh.
Screenshots attached.
Accubattery is insanely inaccurate, and takes an estimated guess based on charging cycles. Long story short, the app is garbage and people should stop putting faith in it.
crixley said:
Accubattery is insanely inaccurate, and takes an estimated guess based on charging cycles. Long story short, the app is garbage and people should stop putting faith in it.
Click to expand...
Click to collapse
I've already tried to search for a this app, and I found a thread in the OnePlus 5T section where a USB multimeter in, at least, two cases, has shown the same result as Accubattery.
Anyway thanks for the answer, need to find why battery sucks su much on both my friend phone and mine.
I experience the same issue !
Killua96 said:
Hi, just wanted to ask if someone else beside me and my friend got a 3000mAh battery (According to accubattery) after a couple of months, the same happened to another friend of mine with a OnePlus 6T, 3450mAh instead of 3700mAh.
Screenshots attached.
Click to expand...
Click to collapse
I experience the exact same issue on my oneplus 6. The accubattery app shows my battery health as 3,046 mAh and design capacity as 3,300 mAh. It has been this way since the day I got the phone (around one month back). I am pretty bummed that oneplus sent me a phone that had only 90% battery life to start with. Is that a problem with the battery or is that a problem with the way the accubattery app reads the results?
stirfries said:
I experience the exact same issue on my oneplus 6. The accubattery app shows my battery health as 3,046 mAh and design capacity as 3,300 mAh. It has been this way since the day I got the phone (around one month back). I am pretty bummed that oneplus sent me a phone that had only 90% battery life to start with. Is that a problem with the battery or is that a problem with the way the accubattery app reads the results?
Click to expand...
Click to collapse
Seriously? As stated before it is a calculated capacity. It measures how much goes in and out. While the battery is shipped as 3300 mAh the app can very well vary as it is only roughly calculated and the full capacity is very theoretical as the voltage decreases and is never zero.
You start with 4.35 V = 100 % and end at maybe 3.2 V = 0 %. So you have energy left after your phone as shut down. That's why you get a battery low screen even if your phone has shut itself down. It is not a design flaw and it is not scam.
Also don't forget that different components use different voltages. Transforming them results in wasted energy. Like a power bank that has 10000 mAh in theory only can charge maybe 7000 mAh while the rest is lost in heat.
thank you !
Macusercom said:
Seriously? As stated before it is a calculated capacity. It measures how much goes in and out. While the battery is shipped as 3300 mAh the app can very well vary as it is only roughly calculated and the full capacity is very theoretical as the voltage decreases and is never zero.
You start with 4.35 V = 100 % and end at maybe 3.2 V = 0 %. So you have energy left after your phone as shut down. That's why you get a battery low screen even if your phone has shut itself down. It is not a design flaw and it is not scam.
Also don't forget that different components use different voltages. Transforming them results in wasted energy. Like a power bank that has 10000 mAh in theory only can charge maybe 7000 mAh while the rest is lost in heat.
Click to expand...
Click to collapse
thank you for your detailed analysis !
It's kind of reassuring because when I bought mine it was second hand and I saw around 3000mah as well! So actually the battery wasn't damaged probably.
It could also be OnePlus which makes the choice to not allow the phone to charge completely so the battery lasts for longer in long term. I Kno Dell does it for example. Then it would be very acceptable. But yeah, maybe it's the app.
Had the same issue with several phones, for example with the S8+, Accubattery showed 97% from day one, after a few weeks it dropped a bit lower still.
The app seems highly inaccurate and I quit using it.
Sent from my ONEPLUS A6003 using Tapatalk
Hello guys,
Switched from last year's X to the smaller 3. Loving it so far, camera is amazing. No super major complaints.
- However, I have 3 wireless chargers (bedroom, living room, and at the office) out of which 2 are 10W (branded fast chargers). I get that the pixel won't be able to draw 10W because of the secure handshake, but every blog I read says that it should be able to draw 5W. However, when measured with the app Ampere, my pixel is only drawing 2W~ at best (4V, 0.5A). I have tried with a variety of chargers and nothing gets beyond 0.55A.
- My second question is regarding the battery. I know that the iPhone is very good at stand by time, but last night I took it off the charger (it had already reached 100%) to set my alarms for a second and forgot to put it back on the charger. When I woke up for the restroom 3 hours later, phone had 91% left. 9% battery in 3 hours of zero activity + DND turned on seems a bit excessive. Or am I just spoiled by the iPhone?
In any case, I am not switching back because the phone's great. Just thought I'd ask. Zero problems aside from that.
As for the charging, I'm not sure. Are all the chargers identical? I'd try a different one maybe if cords didn't solve it. I use a Choetech pad at work and home and it gets 500-600mAh when charging according to Ampere with the stock Pixel 2 XL charging cable and brick. I have a Pixel Stand coming from the Black Friday deal via Best Buy too but not sure where I'll use it yet.
As for battery, others have stated that the always on display uses about 1% of battery per hour. If you're using more than that, I'd assume it's due to an app (or apps) running in the background on the device. This could be an email app polling, Twitter refreshing, etc. I'd take a look at the battery use and see which apps are on the list. Something seems to be preventing the phone from going into Doze and kicking in the battery saving power.
I agree with the above post. If you have ambient display on then turn the phone face down at night to turn it off. That will help. Get Better Battery Stats here: https://forum.xda-developers.com/showthread.php?t=1179809 and follow the install instructions carefully especially if you're not rooted. Look at alarms and partial wakelocks. I usually get around 0.5 - .6% standby drain and I have a ton of stuff on. Face down though I have it put into DND mode with Digital Wellbeing.
I'm getting the Pixel stand today too and also don't know where I'm going to put it. Got it on BF too. My wife got one and I just love the morning routine. I'll probably put it by my workstation down here and keep my 5X as the night clock. Not sure.
imsorryjk said:
my pixel is only drawing 2W~ at best
Click to expand...
Click to collapse
Mine, too, with my old Nexus 5 wireless charger. It's not a problem for me, because I just leave it on there overnight anyway, but I have only seen 2W max.
Hi guys. Just wanted to ask a quick question with regards to. My Galaxy A73 and the accubattery health estimate.
Before anyone yells from the tree tops "battery monitoring software isn't accurate" I know that, but it's enough to get a general idea on how my battery is holding up. And historically it's readings have been pretty good with me. Recently slapped in a fresh 3000mah battery in my S7 and it pretty regularly reports the battery health in the 96-98% range (I typed in the correct capacity for the new battery) which I am happy with. So..... with thay out the the way!
Recently the entire family basically came up for new contracts all at the same time, and we all got A73s. So three phones for the wife, father and myself. I've installed accubattery on all three phones and done full charges, ~15%-5% up to 100%. And on ALL three phones the reported battery capacity is around ~4500mah which seems far off of the design capacity of the advertised 5000mah. My particular phone reported a first charge capacity of 4733. But has dropped to 4500 over subsequent charges. As I said. I know software isn't 100% accurate. But historically it's been good to me reporting good numbers for my S7 and my A80.
Although I have been very impressed with the battery life thus far im still wondering if these battery's are bad.
Can anyone else show their accubattery results?
Alastair_S1D said:
Hi guys. Just wanted to ask a quick question with regards to. My Galaxy A73 and the accubattery health estimate.
Before anyone yells from the tree tops "battery monitoring software isn't accurate" I know that, but it's enough to get a general idea on how my battery is holding up. And historically it's readings have been pretty good with me. Recently slapped in a fresh 3000mah battery in my S7 and it pretty regularly reports the battery health in the 96-98% range (I typed in the correct capacity for the new battery) which I am happy with. So..... with thay out the the way!
Recently the entire family basically came up for new contracts all at the same time, and we all got A73s. So three phones for the wife, father and myself. I've installed accubattery on all three phones and done full charges, ~15%-5% up to 100%. And on ALL three phones the reported battery capacity is around ~4500mah which seems far off of the design capacity of the advertised 5000mah. My particular phone reported a first charge capacity of 4733. But has dropped to 4500 over subsequent charges. As I said. I know software isn't 100% accurate. But historically it's been good to me reporting good numbers for my S7 and my A80.
Although I have been very impressed with the battery life thus far im still wondering if these battery's are bad.
Can anyone else show their accubattery results?
Click to expand...
Click to collapse
This behavior is observed by me also, and a few days back I put comments in the Google play store app review but developer is yet to respond.
psbhullar said:
This behavior is observed by me also, and a few days back I put comments in the Google play store app review but developer is yet to respond.
Click to expand...
Click to collapse
Interesting.
So you are also seeing ~4500mah?
Well of that's the case then I don't think all these phones can have bad batteries.
So Either
1. Accubattery is reporting incorrectly. Not exactly far fetched as software can definately be wrong.
2. Our phones all have bad batteries. less likely but still a possibility.
3. Or lastly Samsung is lying about advertised capacity and we all have 4500mah batteries. I find this to be the LEAST likely scenario.
Alastair_S1D said:
Interesting.
So you are also seeing ~4500mah?
Well of that's the case then I don't think all these phones can have bad batteries.
So Either
1. Accubattery is reporting incorrectly. Not exactly far fetched as software can definately be wrong.
2. Our phones all have bad batteries. less likely but still a possibility.
3. Or lastly Samsung is lying about advertised capacity and we all have 4500mah batteries. I find this to be the LEAST likely scenario.
Click to expand...
Click to collapse
Sorry this is an older thread, but I've had much the same issue with quite a few of the Sammy devices, and found this thread because I've been considering an A73.
First, Accubattery, in my experience does a good job. I've used it on an LG G8 that I had done battery 'conditioning' since it was new. Guess what? Accubattery rated that phone at 103% of capacity! Yes, it was accurate. Also used it with a Pixel 6a and battery was 100%, so that one was rated at 4500 mah and that's exactly what Accubattery said.
But most of my Sammy phones, like the 2 A52S I have, are rated much lower than stated capacity. Instead of 4500, they both rated about 4100.
Your scenario number 3 is actually correct, but not in the 'lying' part. If you research it, ea mfg tells you that battery capacity can vary (they claim it's hard to control during manufacturing), and it states in their 'fine print' that a battery actual capacity can vary by 10% plus or minus (it's always minus).
That means my new phone, properly conditioned from the beginning, could read as low as 4050 and still be within specs. So it's not a 'lie', it's a way to put in less battery and still claim it's 'as designed' and you have no recourse.
Ironically though, my older galaxy A03, which has a 5000 mah battery, gets a 100% capacity from accubattery. Sometimes I think it's a better idea just to use them and not even think about it. It's kind of tedious and it's pretty much out of our control. And life is short.
cheers