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How do you override the default android manufacturer info on battery capacity?
E.g
I'm using Xperia C5503, rooted of course. Original battery comes with 2300mAh. I've got a new fatty 3rd party 3400mAh but the Android gauge simply can't get the correct reading of the new battery capacity. I tried setting the new capacity inside of 3C battery monitor pro but seems it's only for internal comparison, calibration also doesn't help probably because it's only meant to calibrate original 2300mAh not anything more or less.
So the result is reading stuck at 1% lasting for 10 or more hours, it's really frustrating. Any ideas?
Well, to reply to myself - I found it.
The solution to 'fix the gauge' with extended battery is to not let it drain to 0% but instead to drain only to the low battery indicator! I used 10% remaining indicator mark (didn't tried with 15% as suggested @batteryuniversity or 5% when battery saving mode switches on), then the crucial point is to switch the phone off and let it recharge in powered off mode till 100%. Repeat the procedure 2-3 times and it should be good.
The charging circuitry needs to learn what the max and min are, so it can then stretch its range to fit the battery's new and much larger capacity.
As a result now I have 3400mAh that holds around 3d6h with more than 8h of screen time. Hope that helps to someone too.
I have been reading these days that some of you are starting to replace the battery of the Axon 7 after 1.5-2 years. This is something we all have experienced with phones, laptops, wireless devices, etc. About 2 years ago I researched on batteries and finally discovered how to avoid the degradation in Lithium-Ion batteries. I have applied it to my Dell XPS 13 Laptop and my Axon 7 with excellent results. Due to the recent proliferation of battery replacement I think this guide can be useful to extend the useful life of your battery.
Battery wear is something that can be reduced to almost nothing with proper charging habits. But there are some urban legends out there completely false. Lets review all them:
Do NEVER charge it over 90%: TRUE. The battery wears a lot when charging the last 10%. actually charging up to 90% takes about 10% of a degradation cycle while the last 10% takes 90% of the degradation cycle. Charging to 90%, only this trick, can reduce the wear of your battery to 1/10 or even more if you stop at 80%. I use to stop at 84%.
Do NEVER drain your battery completely: TRUE. The high current required to pull the energy stored in the battery when the level is so low requires more time per energy unit and that initial 10% wears the battery excessively. So taking care of that will save your battery too. I use to set low battery mode at 15% but I always avoid being so low. Please note that leaving the battery drained for too long can make it impossible to charge. IMPORTANT: If you are not going to use a device for some time, leave battery between 40-70%, not more, not less. If you do not do that, you can have an ugly surprise in case you need it again.
Quick Charge is bad for batteries: FALSE. It is actually the opposite. QC is a lot healthier since the battery is not heated for a long time. Heat is a problem too for the battery. So, try to avoid old charging units as possible and use only QC 3.0 chargers for car and home as much as possible.
Short charging sessions damage the battery: FALSE. A number of small charging sessions in the healthy region between 20-80% battery level is healthier than a long session for several reasons, the most important is that the battery temperature never rises that much.
I have been doing this in my devices and my Axon 7 retains the same energy storage as new after 18 months of healthy charging habits. These advises are also applicable to laptops and any other device using a Li-ion battery. As you can see, leaving your phone plugged at night will kill your battery very quickly the same way a laptop battery wears quickly when left plugged. I am lucky my Dell XPS 13 has a battery control software/firmware that allows charging to stop at a desired value automatically so I can have it plugged without actually charging. I was looking for a similar solution for the Axon 7 and I found it some time ago.
It was very annoying being on top of the device taking care of the battery level when charging. There are some apps out there that monitors the battery level while charging and signal an alarm when the desired maximum charge level is reached. But we are lucky!!!! The latest Custom Oreo Kernels for the Axon 7 support the charging_enable switch and we can use now Battery Charge Limit App to modify the max battery value. Two main values can be set, the max allowed charge and the recharge level. The first one is the most interesting since the charging will stop at that level. I have 84% set here but any value between 80%-90% is safe and healthy for your battery. The second value tells the system to avoid starting a charging session if the value is still above the second threshold. It is designed to avoid rapid charge/discharge sessions. Usually a value between 4-8% under the max value is safe and healthy. I have this second value set to 79%.
With this daemon your battery will never reach 100% and with it you will avoid excessive battery degradation. It worked for me so I hope you could benefit of it too. On the other side, just avoid drain your battery too much and do not fear short charging sessions during your car commuting time or while in the shower, etc... These little tricks sum and you will save the money and damages in your unit replacing a battery you probably could have avoided with proper battery care.
Cheers!!!!
Some are not false urban legends at all. On the contrary I see lots of false claims with no source evidence.
Limiting by percentage still allows the battery voltage to reach higher shorter lifespan voltage. See that limit apps thread for discussion on limiting by voltage through Tasker instead. Further do you know what voltage that percentage idles at? It varies by device implementation setup.
Here's some information on voltage level health.
"Additionally, when the cathode voltage rises past 4.2 V, the electrolyte begins to oxidize (and ultimately decompose). This effectively limits present-day lithium-ion batteries to a maximum voltage of 4.35 V with the understanding that the “bad stuff” begins to occur past 4.0 V, and becomes unsafe past 4.35 V."
https://qnovo.com/why-battery-vendors-are-hitting-the-wall
Got a reliable source for quick charge not harming battery life? I've only seen marketing material and such claims repeated but not any research or scientific sources.
Sent from my ZTE Axon 7 using XDA Labs
Infy_AsiX said:
Some are not false urban legends at all. On the contrary I see lots of false claims with no source evidence.
Limiting by percentage still allows the battery voltage to reach higher shorter lifespan voltage. See that limit apps thread for discussion on limiting by voltage through Tasker instead. Further do you know what voltage that percentage idles at? It varies by device implementation setup.
Here's some information on voltage level health.
"Additionally, when the cathode voltage rises past 4.2 V, the electrolyte begins to oxidize (and ultimately decompose). This effectively limits present-day lithium-ion batteries to a maximum voltage of 4.35 V with the understanding that the “bad stuff” begins to occur past 4.0 V, and becomes unsafe past 4.35 V."
https://qnovo.com/why-battery-vendors-are-hitting-the-wall
Got a reliable source for quick charge not harming battery life? I've only seen marketing material and such claims repeated but not any research or scientific sources.
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Thanks for the info. However it is not easy to control the voltage of the cathode and the OP guide tries to use the available tools.
If you never fully charge how would you know if it's capacity is still near maximum?
I've kind of followed this idea for a while now ..
I always charge to a full 100% but never let the battery go completely flat ...
My Moto G is still running the same battery from new ...
My Axon 7 running Oreo is getting 4 days before it needs to be charged at normal usage..(recharge @ 15%) at the end of day 4
I get 6 days in standby
Oki said:
Quick Charge is bad for batteries: FALSE
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I switched to old weaker chargers (0.5 - 1.0 amp) as there's almost no noticeable heat at all while charging, and I've found this extends the battery life as well. If any/all heat is bad, then aren't short bursts of high heat (3.0 amp QC) worse than long periods of little/no heat (0.5 - 1.0 amp) ?
Sure...
Most all of those "tips" are hogwash.
Modern day charging is handled by the phone. If there's something that hacked that algorithm in my phone, then so be it. :fingers-crossed:
Few years ago I did some research on Lithium-Ion batteries (which behave differently from other kind of batteries, such as lead acid ones for example) and I second all the conclusions by OP. If you are interested on the matter and to understand how batteries work, check this site: https://batteryuniversity.com/learn/ the explanations are crystal clear.
Disclaimer: I have no whatsoever association with the website.
Has anyone checked the ROG phone "Battery health" on AccuBattery Pro? Mine is showing Estimated Capacity as 3,548 mAh, Design Capacity 4,000 mAh. I completely discharged then charged to 100% as calibration. Brand new phone.
Mine is showing 3,531mAh after around a week of usage.
Someone should report this on the Asus forums
mine also show 3500mah after 2.5 weeks of use
I have posted this issue on ASUS's Forum
https://www.asus.com/zentalk/thread-249329-1-1.html
Please feel free to add your battery capacity screenshots on their forum so we have a reference for the future
Mine's at 3462 after a little over a month. With a health of 87%
OK, then. We shouldn't be concerned. The proper way to measure battery is more complicated than what AccuBattery does (the proper way involves measuring battery discharge at a controlled rate). Since many of us are getting similar readings on AccuBattery, it's probably that AccuBattery's method isn't accurate.
MichaelCaditz said:
OK, then. We shouldn't be concerned. The proper way to measure battery is more complicated than what AccuBattery does (the proper way involves measuring battery discharge at a controlled rate). Since many of us are getting similar readings on AccuBattery, it's probably that AccuBattery's method isn't accurate.
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Same here: 3536 mAh 88% health with Accubattery first charge out of the box after discharging to 15% following first power up.
Either Accubattery has a problem with our phone, or Asus is ripping us off.
If the batteries were bad, we'd all have different readings.
I am guessing the AI charging might affect the measurement from AccuBattery. However I also don't think the battery capacity is full 4000 mAh. My last phone from Motorola has a 3000 mAh battery on the spec chart, but the battery itself prints 2810 / 3000 mAh (min/typ). From the ROG phone tear down videos, this battery isn't marked though.
From the asus zen forum the only solution the person provided was to bring the device to a service center to get it tested
I maybe wrong however with batteries these days it only ever uses a percentage so that there is redundancy for failure and to preserve the battery life.
iStasis said:
I maybe wrong however with batteries these days it only ever uses a percentage so that there is redundancy for failure and to preserve the battery life.
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Samsung does that. Note 9 is 4000mah but Accubattery says 3800mah on new phones. Every one of them.
Power reserve to not kill the battery early.
Anyway, 3500 mAh seems like one heck of a left over reserve.
Our batteries should last 5 years at least
Same "problem" here, but maybe it is because program has small amount of gathered data about battery usage. I did full discharge and full recharge yesterday, and goz about 3567mAh, but ill try to calibrate battery and use measuring app for longer time to get more accurate results.
Ps: I am using only slow charger to avoid overheating to eliminate battery damaging when recharging
I have not checked my ROG Phone in any 3rd party apps as I have not had a reason to question the 4,000 MAH
It is not a problem, lithium ion battery deteriorate faster if kept fully charge all the time or when discharged to low. Since most people have the bad habit to plug their phone all the time and keep them full for a prolonged period of time, oem have to be creative to fight this. Some will show your battery is charged at 100% while in reality its only charged at 90% .That is what your program most likely reading.
lithium ion should only be charged at 100% before you leave the house, i tend to keep mine between 50 and 90 usually . With quick charge there is no reason to keep a phone plug overnight, 10-20 min before leaving the house is plenty.
I have turned on AI for battery charging and as soon as my Battery reaches 100 it stops charging which is good enough for me to have faith in the charging technology in the phone and battery capacity.
I do leave mine plugged in over night however with the right equipment to check its hard to get a good understanding of whats happening. Theres inbuilt battery health tools so i would always advise using these and going through the features of this over 3rd party jank applications and trust them. Its the only tools Asus are going to support in any diagnostic troubleshooting.
Hi guys, I am returning after some time of usage and charging. After some charging cycles I have to admit my battery capacity is "increasing" - well better say, it is getting used to be charged properly. Now I passed 7 full charging cycles, but after 3rd one every next charge had more mA. I started at 3479mAh with full battery, now I ended with 3711mAh - hope it gets even better (I'll be glad for at least 3800, but who knows?). Everytime I tried to charge only when I was below 3%.
I have to say I am using slow charger with 5V and 400mA current. Battery checker from mobile manager was not detecting any issue with this way of charging nor AccuBattery Pro. I also know, that batteries shall be charged only about 80% of its capacity, but I am still sceptical about that rest 20% so I am charging to max everytime.
Hope I helped...
...another time passed and I am back with another results. After a lot chrging cycles I am stuck at between 3500-3700mAh of total capacity. I was searching around whole internet and found out, that phone manufacturers are "decreasing" battery capacity with SW at 90% of total capacity to prolong battery life and avoid battery wear, because everytime you charge the phone, you think you are charging to 100%, but in real you are charging to 90% only - rest of 10% is "hidden" to save your battery life - due to my calculations and testing it might be true. Anybody else had something different, so we can compare it?
I've just started cycling with accubattery will post when I get some solid data but seems battery has lost some capacity already only had it since November 5
Hellindros said:
I've just started cycling with accubattery will post when I get some solid data but seems battery has lost some capacity already only had it since November 5
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Heres mine so far only a few cycle's in but I've lost quite a bit capacity
OK, first of all, we all know that the S6 has NEVER been known for being a battery life champion. BUT, here's the problem .....
Battery reports relatively consistent decline in charge over time, until it gets down to 1%. At that point, the device still has sufficient charge to run for about one hour with the display on and set at full brightness.
Same on Stock Nougat, L.O.S 14 and L.O.S. 16. Same after full factory re-sets on all three. Same on pull and re-connect battery, which is a factory-new Samsung replacement for the original (not the 7 edge mod)
OBVIOUSLY, there is something not quite right about battery capacity reporting here.
Suggestions?
nezlek said:
OBVIOUSLY, there is something not quite right about battery capacity reporting here.
Suggestions?
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Ion Lithium batteries do not like to be completely discharged, to my knowledge ideally they should always be operated between 20% and 80% of their capacity.
Some laptop's do shut-down them selves when battery reaches 5% to safe guard the battery health.
So, yes, 1% reported by the battery does not actually include the "reserve" charge to prevent damages and, unless you really have to, do not use you phone with battery below 10% and charge it !
Under normal circumstances
enryfox said:
Ion Lithium batteries do not like to be completely discharged, to my knowledge ideally they should always be operated between 20% and 80% of their capacity.
Some laptop's do shut-down them selves when battery reaches 5% to safe guard the battery health.
So, yes, 1% reported by the battery does not actually include the "reserve" charge to prevent damages and, unless you really have to, do not use you phone with battery below 10% and charge it !
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Under normal circumstances, yes, definitely, keeping it between 30% and 80% is ideal, but when the goal is to accurately calibrate the battery / charging monitor circuitry, more accurate results are to be obtained by running the device to the point of battery exhaustion, at which point the reserve capacity designed into all lithium batteries still remains. But this is NOT something to think about doing on a daily basis. An S6 or S6 edge first run to the point of shutdown will actually re-boot but shut down just about immediately thereafter - iterations are not advised. You want it to have just enough left to get it to re-boot and stay running while charging, at which point you can monitor the recharge . Check out the data from Battery University or the support pages for Accu Battery for more details. Trying to use up the built-in safety margin is a fool's errand, and if you've ever seen a mishandled lithium cell turn a vivid red while the device in question melts around it, it should give you a healthy respect (if for some reason you did not have it in the first place) for not messing with or even attempting to mess with the reserve. The problem here is that the "1%" remaining on the charge meter (which is above, beyond, and independent of the untouchable reserve) actually appears to represent about 15% of the rated capacity of the battery, or in this case, over an hour of screen-on run time, and by never running that out, a current-flow-based app like Accu Battery will invariably under-report capacity going forward as a result. Such apps measure how much current is drawn to get from 'x' percent to 'y' percent being reported, but when the amount of current draw to get from 1% to zero is a range of around 300 mAh, for a battery nominally rated at 2,550 (for an S6) or 2,600 (for a S6 edge) as the total capacity, the problem of how accurate the "1%" figure is should be kind of self-evident. I am not willing to see how low a "0%" capacity report can be pushed down. Sanity has to rear its ugly little head at some point, after all.
Many alternative kernels, etc.. claim to address this problem, but I have yet to find one that actually does the job. It is rumored that Samsung service facilities can do a complete reset of the capacity reporting capability, but who knows? Maybe the luck of the draw gave me a dud battery from Samsung as the replacement. :crying:
I seem to get reduced maximum capacity even after fresh battery replacements.
Most recently I purchased a new replacement battery from iFixit. With this new battery, just like the previous one I bought a year ago from Amazon, my phone charges the battery to a what seems to be around 80% of its capacity. The maximum voltage when reported charge reaches 100%, as reported by the phone, is 4.225V (according to multiple apps). Capacity as measured by AccuBattery is around 80% or 2800 mAh.
I've tried many things, such as the battery calibration multiple times (both method 1 with USSC codes, and something like method 3 which iFixit recommends), without any major apparent improvement.
Things I am wondering:
Should the battery voltage when at 100% charge be closer to its rated 4.4V than the maximum 4.225V my phone is seemingly able to reach?
Can I expect to see improvements if I keep going through a few cycles of battery calibration and full charge/discharge?
Is there any other way to reset the phone's perception of battery capacity or wear than the battery calibration options?
I found another thread with a similar description to my own experience here.
In 3 years I have replaced battery 4 times, now something odd is happening.
I'll make a note to dig out my old USB tester and check how much total juice is pushed into the phone with a charge from <5% to 100%.
More details of my battery history for more background and for anyone interested:
I used the original battery from purchase in late 2018. My charge pattern for the first 2 years was typically charging to 100% every night, and topping up during the day as necessary.
During winter 2020 it performed terrible in the cold (not any extreme cold, only around 0 C), and once drained from around 80% to 35% in less than an hour of continuous use (photos, filming) and then died. After this I changed my charging pattern to where I was keeping the phone from exceeding the 70-40% range as much as possible.
In December 2021 I purchased a replacement battery from Amazon (supposedly original). The original battery was reportedly at 80% capacity says AccuBattery. How reliable that measurement is I don't know (it is all data reported by the phone itself as far as I understand), but the capacity had gradually decreased over the three years of use. I can't recall the voltage readings though, and I don't seem to have any screenshots saved from that view.
The new battery didn't ever seem to be able to exceed the capacity of the 3-year-old original battery (which had gone through over 1,100 charge/discharge cycles as tracked by AccuBattery) that it replaced. It's more stable (especially in cold conditions) but has not brought any increase in usage time compared with the battery it replaced.
With the now 10-months-old Amazon battery, having gone through less than 400 charge/discharge cycles according to AccuBattery (which is relative to the max capacity of approximately 2800 mAh or 80%), my phone in the past month gave me the pop-up notice indicating a poor battery. The capacity reported hasn't changed much over these 10 months of use.
Update with USB tester and comparison with a Samsung Galaxy S5 Neo.
TL;DR: 2800 mWh is the new 3500 mWh
First, S5 Neo.
I have an old S5 Neo, last of its era of Samsung phones with easily replaceable battery. I purchased a new battery for this phone from iFixit in the same order as the S9+ replacement battery.
S5 Neo's battery is rated at 4.4 V (3.85 V nominal) with a 2800 mAh capacity, or 10780 mWh. Depleting the battery and making sure the phone would no longer switch on with the power button, I charged it from 0% to 100%.
After slowly charging for 3 hours at just below 4.8 V and 750 mA for most of the time, the USB tester showed 10780 mWh, and the phone showed 92% charge. At the 3h 30min mark, shortly after reaching 100% (I didn't catch it perfectly), USB tester showed current had dropped to 350 mA and total charge delivered was just over 12000 mWh. After another 10-15 minutes the charge current dropped to zero and total power delivered showed 12326 mWh.
The S5 Neo phone, using the app GSam Battery Monitor while the phone is otherwise idle, it shows an internal battery voltage reading of 4.38 V when fully charged, still plugged in and trickle charging. Once it's saturated (charging icon disappears) the voltage drops to 4.33 V.
Going by the USB tester results and progress shown by the phone, and with the assumption that the battery is able to be charged to its full rated capacity with this old phone, the battery charged to capacity with an efficiency between 87.5% and 92%.
I also captured a few mid-way readings. Here is the complete list of my captured readings including comparison to rated capacity assuming perfect efficiency (with extrapolated total charge for levels below 100%):
100% (charging current at 0.0 A)12326 mWh~114% of rated capacity100% (still charging)12062 mWh~112% of rated capacity92%10780 mWh11717, ~109% of rated capacity81%9291 mWh11470, ~106% of rated capacity62%6440 mWh10387, ~96% of rated capacity33%3160 mWh9575, ~89% of rated capacity19%1868 mWh9831, ~91% of rated capacity
The extrapolated charge to reach max rated capacity is increasing as charge level goes up, which I think is kind of expected. Conversely, the efficiency is a little lower than I would have expected. Still, the total power required to reach 100% exceeds the rated capacity by a fair margin. Better still, the phone itself reports a battery voltage near the battery's rated 4.4 V.
Second, S9+.
As mentioned in the original post, the internal battery voltage max reading is 4.22 V, and the capacity seems to not reach the expected level. Checking the Battery status option of Diagnostics in the Samsung Members app to check the battery, it shows it is in "weak" condition. Resetting all the battery related readings using USSC codes (see battery calibration) doesn't seem to change anything.
The battery is rated at 4.4 V (3.85 V nominal) with a 3500 mA capacity, or 13475 mWh. With fast charging disabled, and after draining the phone until it powered off and would no longer power back on, I started charging via the USB tester. I'm using a Samsung travel charger this time, which delivers a little more current than when I charged the S5 Neo.
Charging starts out at just below 5 V and 1.5 A. Current quickly drops to 1.172 A, and somewhere between 33% and 50% it drops to 1.072 A. This current is stable until beyond 81% and then starts to gradually decrease throughput the rest of the charging cycle. (Actual charging current is slightly lower with screen off vs screen showing current charge level.) This I believe is indicative of the battery capacity (or perhaps rather the phone's perception or expectation of the battery capacity) is below its typical levels. It could also be a difference in how the S9+ charges compared with the S5 Neo, or perhaps less likely a difference between the chargers used, I can't really know for sure with only my two samples. In comparison, the S5 Neo kept charging at essentially the same current level between 0% and 92%.
Again, here are a few mid-way readings, as well as the extrapolated capacity assuming perfect efficiency:
N/A13475 mWhnever reached100% (charge current at 0.0 A)12341 mWh~92% of rated capacity100% (first reached)11982 mWh~89% of rated capacity92%11398 mWh12389, ~92% of rated capacity81%10053 mWh12411, ~92% of rated capacity62%7646 mWh12332, ~92% of rated capacity50%6174 mWh12348, ~92% of rated capacity33%4100 mWh12424, ~92% of rated capacity
Oddly consistent, this ratio between charged power and percentage charge, at around 92% of rated capacity throughout almost all of the charge cycle.
The total power required to reach 100% is very disappointing. Even assuming perfect efficiency, it is well below the battery's rated capacity. Assuming similar efficiency as the S5 Neo at around 90% translates to roughly 80% capacity at full charge. This mimics closely the estimates from AccuBattery, which shows 78% capacity after 12 "full" cycles.
To reach a "saturated" 100% requires equally much power for the S5 Neo as for the S9+, even though the S9+ should have a battery with 25% more capacity.
Now that I have externally validated that my 4-year-old S9+ is only ever able to charge my fresh newly replaced battery to 80% of its rated capacity, I suppose the optimistic view is that it's now a forced charge limit for substantially increased battery longevity. While this is functionality I do want, it is something I'd prefer to have the option to use, and with the ability to top up to 100% when necessary.
If I have the opportunity, I may drop by a Samsung service center and ask if there's anything I can do to reset the battery status, or retrain the phone's perception of battery capacity.
Thank you for coming to my TED talk, and have a great day.