how can i calibrate the battery of my galaxy s9+? - Samsung Galaxy S9 Questions & Answers

title says it all, i just bought an used galaxy s9+ but it has an awful battery life (4:30-5 hours of screen) and i want to see if calibrating the battery in some way can improve it
sorry for grammatical mistakes but english isn't my first language

Battery likely should be replaced if it has very abnormally low SOT.

Ok tanks, i've checked and the battery doesn't seem to be worn to the point of excessively shortening battery life, instead of charging to 3500 mAh it charges to 3127 mAh, do you think the battery has lost too much capacity?

nutria.1 said:
Ok tanks, i've checked and the battery doesn't seem to be worn to the point of excessively shortening battery life, instead of charging to 3500 mAh it charges to 3127 mAh, do you think the battery has lost too much capacity?
Click to expand...
Click to collapse
How do you know that's accurate?
If normal SOT is 10 hours and it's now 8 hrs or less, it's time to replace it.

blackhawk said:
How do you know that's accurate?
If normal SOT is 10 hours and it's now 8 hrs or less, it's time to replace it.
Click to expand...
Click to collapse
I checked it from an app called accubattery and i think that's pretty accurate

nutria.1 said:
I checked it from an app called accubattery and i think that's pretty accurate
Click to expand...
Click to collapse
May or may not be... I use it.
Mostly for battery temperature and SOT history.

Really i don't know, i just installed an app called aida64 and the charge counter says that it charges to 3303 mAh, i don't know if trust aida64 or accubattery lol

Related

Another Gold 3500 battery review...slightly scientific

Wanting more battery life and having reading a few positive reviews about the Gold 3500, I got one from Amazon (UK). The numbers 3500 vs 2500 mah indicate I should get around 40% extra battery life compared to stock but having played with RC cars and helicopters running LiPo packs I know that pack ratings aren't everything.
Actual battery capacity depends on the discharge rate, the more juice you pull the less the effective battery capacity you get with a lot of energy wasted in heat due to internal battery resistance. Fact of life with batteries of all chemistry.
My original battery is about 6 months old now, charged daily from anywhere between 0-50% remaining. In day to day use the Gold does seem to last longer based on my 6 months experience with the original battery but how much better is it?
I charged the batteries in my phone and turned the phone off once it hit 100% but kept the charger on as it seemed to charge for a bit longer.
Using my RC battery charger, I used the discharge function setting the low voltage cut off to 3V (standard for lithium batteries) and set the discharge rate at a constant 300 mah. Using a constant discharge rate may not be realistic but it does allow for a fair comparison, keep in mind that our phones power usage jumps up and down depending on use.
Results
-----------
6 month old stock battery rated at 2500 mah = 2364 mah (which is what I would expect from a battery with 180 cycles on it)
Brand new Gold 3500 rated at 3500 mah = 2524 mah (a bit disappointing but at least as good as a new stock battery)
Now the discharge rate can make a big difference to effective battery capacity, it might be that the 3500 mah rating on the Gold batteries was determined using a very low discharge rate or they discharged it to below 3V.....or its just a gold wrapper over a stock battery
Interesting to note that the stock Sammy battery is pretty true to its rated capacity, so the perceived increase in battery capacity I experienced with the Gold battery is probably just the difference between a 6 month old battery and a new one.
Oh well, at least I have a spare battery now and didn't pay a fortune for the Gold. The Gold does seem to last a bit longer than the 6 month old stock on so I am happy enough with it.
Notes:
Gold battery had been in use for 2 weeks to run it in
Only one discharge cycle was performed
Could be that I have a dud battery, you results may differ
In real day to day use the discharge properties of the Gold may result in a higher 'effective' capacity
Solar flares are the source of all coding errors
Fairies do live at the end of your garden :cyclops:
It's a shame i've read this post only two days after buying me one of those. Anyway, even if it won't last longer, i'd still have a spare battery right? So everything is not lost
nope, its a shame they rate it 3500mah if this is the case for all.
Mignon, maybe your can get a replacement from thrm and test again. Especially if you have a dud.
Do notice I notoce a significant increase in battery life after charging it past 100%. Probably placebo, I dont know.
Don't think I have a dud, in my experience lion batteries either work or don't. It's not a crap battery, it's just as good as stock but doesn't match the advertised 3500 mah rating.
And it's shiny gold so things aren't that bad
Sent from my GT-N7000 using xda premium
Well that sucks.....haha...i order a gold a week ago.....it should be here soon.....
I got 3500mah gold battery. I review it.
My rom is ultimate rom v5.1, and my stock battery was 11 months old.
Screen on time was always less than 4 hours.
Yesterday I got the gold battery, and I used it up to 1% without first charge, then I charged it 12 hours to initilize the battery.
So unpluged the charge, and tested it as the same usage. I always downclocked to 1000MHz, wifi on, no use 3g data, brightness is zero, bluetooth and gps is off. I downloaded 15 files and apps today, listened to music, did multi windows function, and almost used web browsing.
Now my battery is just 1%. Screen on time is over 5 and half hours. Obviously the battery was improved.
If official JB are released, the battery will be improved more.
But this is not made in Japan. This is made in China because Japanese is so strange on package.
Some of Chinese battery are so dangerous and may be fake, but this gold battery is good one.
Sent from my GT-N7000 using xda app-developers app
here are pics
Sent from my GT-N7000 using xda app-developers app
I'm satisfied with this.
Sent from my GT-N7000 using xda app-developers app
mingonn said:
Don't think I have a dud, in my experience lion batteries either work or don't. It's not a crap battery, it's just as good as stock but doesn't match the advertised 3500 mah rating.
And it's shiny gold so things aren't that bad
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
I dropped my stock and it works perfectly till 55% then it dies. Gonna throw it away soon. So some of the cells could be damaged. Its not either they work or dont m8.
@Mingnon thanks for your effortful tests.
@eeynjae, what are all apps spreading around those icons in your notification bar ?
I am pretty sure most mobile 3.7v phone batteries are single cell, only the mugen styled battery extender jobs that require a different back cover run two cells in parallel.
Remaining capacity is usually just a function of cell voltage so it's strange that it should just tank at 55%. Battery protection circuits generally prevent discharge past 3.0 volts so not sure what it's going on there.
Either way it sounds like you need a new battery, wouldn't risk recharging a damaged cell...
Sent from my GT-N7000 using xda premium
mingonn said:
I am pretty sure most mobile 3.7v phone batteries are single cell, only the mugen styled battery extender jobs that require a different back cover run two cells in parallel.
Remaining capacity is usually just a function of cell voltage so it's strange that it should just tank at 55%. Battery protection circuits generally prevent discharge past 3.0 volts so not sure what it's going on there.
Either way it sounds like you need a new battery, wouldn't risk recharging a damaged cell...
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
yeah its strange. Stuff started to happen at 50, whrn restarting bat percentage dropped to 10-15%. Without restartingbit would go down normally in beginning. Now after using it some time and dropping it its 55%.
Its definitely it either works or doesnt.
Anyway I dont think it's single cell.
i have the same battery bought it a few months back i'am very satisfied....
it's not a 40% extra time even framework it designed to work with less voltage since after using it below 15% i notice always fake meter value, when you keep your phone asleep for half an hour you will notice an increase in percentage. not accurate but runs fine, its a spare and a great replacement i dont care if it's slightly powerful than stock at least its the same size for 4 extra hours.. i never needed to change case nor a cover of anything its great
Sorry for my off-topic question, but i see in this topic there are advised people recently i bought a noname car charger for my Note, (specs: output 5.5V DC, 800mAh) - is this charger good for the Note or it would damage it? (i read somewhere that the original car charger's output is 5V... this difference of 0.5V has any importance?) Thanks.
mingonn said:
Results
-----------
6 month old stock battery rated at 2500 mah = 2364 mah (which is what I would expect from a battery with 180 cycles on it)
Brand new Gold 3500 rated at 3500 mah = 2524 mah (a bit disappointing but at least as good as a new stock battery)
Click to expand...
Click to collapse
Thanks for your time and efforts - your results are similar to my amateurish measurements performed twice and reported on the other 3500 battery thread. Having no device to test the actual capacity, I just used the continuous video playback in plane mode with minimal backlight. The time to full discharge was almost identical in both cases.
zetlorf said:
Sorry for my off-topic question, but i see in this topic there are advised people recently i bought a noname car charger for my Note, (specs: output 5.5V DC, 800mAh) - is this charger good for the Note or it would damage it? (i read somewhere that the original car charger's output is 5V... this difference of 0.5V has any importance?) Thanks.
Click to expand...
Click to collapse
Nobody?
zetlorf said:
Nobody?
Click to expand...
Click to collapse
It won't damage your phone, but if you are going to use it as a gps while charging, it will probably keep dranig the battery, 800mah is not enough to charge it while screen is on and gps is running
baz77 said:
I dropped my stock and it works perfectly till 55% then it dies. Gonna throw it away soon. So some of the cells could be damaged. Its not either they work or dont m8.
Click to expand...
Click to collapse
Some of the cells? Its a 3. 7v Li There is only one cell:silly:
i have been disapointed by this type of battery
hardtheory said:
i have been disapointed by this type of battery
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Click to collapse
Why is that?
After i've received mine, i've never ran out of battery during my day. Definitively improved the usage of my phone.

High capacity battery of 3600mah

Redmi 1s high capacity battery of 3600
i am only sharing link. i am nit responsible if anything goes wrong
konpson brand maximum charging voltage 4.35v
http://www.aliexpress.com/item/100-...Ah-Batterie-Batterij-Bateria/32360795916.html
HSA brand maximum charging voltage 4.2v
http://m.aliexpress.com/item/32365009087.html?tracelog=storedetail2mobilesitedetail
for calculating battery capacity
Look for Wh and V printed on the battery.
mAh = Wh × 1000 / V
Example:Samsung Galaxy S3: 3.8 V 7.98 Wh7.98Wh × 1000 / 3.8V = 2100mAh
Looks too good to be true.However,it might be real,considering that the charging time is 5 hours.I believe this is a protection measure to not overheat the battery,after all it's not an original one.However,I don't understand how are they going to limit the current which enters the battery as that's dictated by the micro controller in the phone.In my opinion,after couple of months of usage,it will broke.
However,if you decide to buy it try to use it only when you don't need the phone too much,so the phone doesn't heat up a lot.I believe heating it up too much might cause the battery to swell and worst case scenario,it will blow up.
Marius Cristian said:
Looks too good to be true.However,it might be real,considering that the charging time is 5 hours.I believe this is a protection measure to not overheat the battery,after all it's not an original one.However,I don't understand how are they going to limit the current which enters the battery as that's dictated by the micro controller in the phone.In my opinion,after couple of months of usage,it will broke.
However,if you decide to buy it try to use it only when you don't need the phone too much,so the phone doesn't heat up a lot.I believe heating it up too much might cause the battery to swell and worst case scenario,it will blow up.
Click to expand...
Click to collapse
i cant buy from alieexpress bcoz of payment mode btw thanks for your advice
Placed order for HSA 3600mAh...
http://www.aliexpress.com/item/New-...Xiaomi-2A-Mi2A-Xiaomi-Hongmi/32359800161.html
Costed 595Rs...
Will update on the quality and battery life and charging time once the product is received...
you Shouldnt buy hsa battery bcoz one person on fb reviewed and said that its same like 2000mah battery of redmi 1s. now lets see your review. i very want to go with konpson
Did you get it?
No still running original
Will this work?
Sent from my HM 1SW
adil.amin820 said:
Will this work?
Sent from my HM 1SW
Click to expand...
Click to collapse
are you asking for capacity then dont know
Got the HSA 3600mah battery today from aliexpress. Have attached some screenshots.
Inserted the battery into phone. It fit perfectly and charging it now.
Please suggest some android app that displays the correct battery information. So that we can validate what i received from HSA.
Will also update the charging hours it took and how long one full charge lasted for me with HSA battery in the coming days.
raviabi11 said:
Got the HSA 3600mah battery today from aliexpress. Have attached some screenshots.
Inserted the battery into phone. It fit perfectly and charging it now.
Please suggest some android app that displays the correct battery information. So that we can validate what i received from HSA.
Will also update the charging hours it took and how long one full charge lasted for me with HSA battery in the coming days.
Click to expand...
Click to collapse
I look forward to the next few days to figure out what is the battery life. I thing to buy same battery, but still waiting for your next posts. Try with CPU-z to see battery info. Thanks
raviabi11 said:
Got the HSA 3600mah battery today from aliexpress. Have attached some screenshots.
Inserted the battery into phone. It fit perfectly and charging it now.
Please suggest some android app that displays the correct battery information. So that we can validate what i received from HSA.
Will also update the charging hours it took and how long one full charge lasted for me with HSA battery in the coming days.
Click to expand...
Click to collapse
How much did you pay it finally ?
As i checked in the Aliexpress they are charging too much for delivery , so did you choose any particular vendor ?
And finally keep posted abt the performance of the battery
it was free shipping only... as previously mentioned paid only 595.
I am not able to find any app that displays the correct mah of the battery.
Its getting charged in 5hrs using redmi charger...
Got an usage time of more than 24hrs.. which i was already getting in my stock xiaomi battery... with dual sim, data and Wi-Fi usage.
So i guess the battery is similar to the stock one given by Xiaomi.
Should try konpson next as suggested by deepak kumar android.
Try better battery state app
Sent from my Karbonn A12* using XDA Free mobile app
You can use "AIDA" to see battery information, also "Ampere" is good enough to show battery information like ~Input Current, Output Current etc.
Used AIDA app as suggested.
Attached Screenshot of data showed by AIDA app with HSA battery.
Thanks for the support
raviabi11 said:
Used AIDA app as suggested.
Attached Screenshot of data showed by AIDA app with HSA battery.
Thanks for the support
Click to expand...
Click to collapse
so it seems its not better than the original....
5hrs to charge its a lot of time
Eitan932 said:
so it seems its not better than the original....
5hrs to charge its a lot of time
Click to expand...
Click to collapse
but temperature is very low as compared to stock. almost12-13 degree less
Haha
If it's exactly same size and type how on Earth it can have more capacity? Use simple logic guys. It's scam.
a4c01 said:
Haha
If it's exactly same size and type how on Earth it can have more capacity? Use simple logic guys. It's scam.
Click to expand...
Click to collapse
The battery for redmi 1s (BM41) its 2050 mah and is same size as the battery for redmi 2 (bm44) 2200 mah.

Oneplus throttles battery capacity to 2500mAh

Source https://www.chinamobilemag.de/news/oneplus-3-akku-kapazitaet-gefallen.html
Seems legit, it's an empirical evidence ...so oneplus ****ed us again??
Someone check pls with a different usb powermeter and with a custom rom
Thread title is a bit harsh. Thats not proven yet.
They tested over months with several devices but not a single time with a custom rom and kernel?
This already sounds a bit strange. This should have been the first thing to test if they want a serious proof.
MarcTremonti said:
Thread title is a bit harsh. Thats not proven yet.
They tested over months with several devices but not a single time with a custom rom and kernel?
This already sounds a bit strange. This should have been the first thing to test if they want a serious proof.
Click to expand...
Click to collapse
I can confirm the OP.
Same "issue" here on my OP3with a custom rom & kernel.
DevSquad said:
I can confirm the OP.
Same "issue" here on my OP3with a custom rom & kernel.
Click to expand...
Click to collapse
You tried with powermeter?
MarcTremonti said:
You tried with powermeter?
Click to expand...
Click to collapse
AccuBattery and a powermeter between charger and phone.
Have yet to see any reputable site report on this, until then I'm going to assume this is sensationalizing
2x4 said:
Have yet to see any reputable site report on this, until then I'm going to assume this is sensationalizing
Click to expand...
Click to collapse
Delete
@franciscofranco, @kairi_zeroblade, @dabug123, @flar2
Can anyone acknowledge or decline this?
That's pretty normal.. We ship a 3000mAh battery. Since we can not fully discharge a battery (since that would kill it) we do not get the full capacity.. I've had this on multiple phones nothing new..
Puddi_Puddin said:
That's pretty normal.. We ship a 3000mAh battery. Since we can not fully discharge a battery (since that would kill it) we do not get the full capacity.. I've had this on multiple phones nothing new..
Click to expand...
Click to collapse
Not necessarily, 18650 (li-ion) batteries like the Sony VTC4 that's rated at 2100mah can discharge its full 2100mah before being below 3.3V which is the limit. Despite being 4.35V in our phones, at 0% battery, the battery is at around 3.65V. To get the full mAh you would probably have to discharge it till 3.5V but that would reduce the quantity of charge cycles it would handle.
crzykiller said:
Not necessarily, 18650 (li-ion) batteries like the Sony VTC4 that's rated at 2100mah can discharge its full 2100mah before being below 3.3V which is the limit. Despite being 4.35V in our phones, at 0% battery, the battery is at around 3.65V. To get the full mAh you would probably have to discharge it till 3.5V but that would reduce the quantity of charge cycles it would handle.
Click to expand...
Click to collapse
Currently my 3 phones all discharge to 3.5V... That's around the point that you hit 0%. Now if you would discharge it to 3.3 wouldn't that littery kill the battery?? R
Puddi_Puddin said:
Currently my 3 phones all discharge to 3.5V... That's around the point that you hit 0%. Now if you would discharge it to 3.3 wouldn't that littery kill the battery?? R
Click to expand...
Click to collapse
Well the VTC4 is a 4.2V max li-ion so 3.3V is the limit.
crzykiller said:
Well the VTC4 is a 4.2V max li-ion so 3.3V is the limit.
Click to expand...
Click to collapse
I clearly don't know as much as you on batteries prob x). So what do you think? Is it normal? Did they do it on purpose?
If this is true, I don't care what reason, and I lost 500 mah in few months this is my last oneplus mobile
Prob had to do it so dash charge can do 30 minutes, if it was 3000mAh as claimed it may have taken 40 minutes and that's not as fast as 30 to 60 sounds, so I wouldn't doubt it, i don't feel I get 3000 mAh battery out of this phone, I still have to charge daily
Bradl79 said:
Prob had to do it so dash charge can do 30 minutes, if it was 3000mAh as claimed it may have taken 40 minutes and that's not as fast as 30 to 60 sounds, so I wouldn't doubt it, i don't feel I get 3000 mAh battery out of this phone, I still have to charge daily
Click to expand...
Click to collapse
What do you expect... Its only 3000mAh on a high end soc. My mum lasts 4 days with 2-3hr SoT.
If this is true then xda or someone else must make it public and uncover this idiocy. I'll never ever buy a phone from them if that's true. Please xda or someone eligible make a public test to find out the truth behind this.
The Oneplus 3 was published in the same period as the Samsung Galaxy Note 7.
In my opinion, Oneplus was afraid that their batteries could eventually have the same problems as the Note 7, so they reduced the usable capacity of their batteries to 2500mAh by updating the kernel.
Maybe a kernel developer is able to find that piece of code.
Edit: That would also be a reason why they pushed the Oneplus 3T shortly after the Oneplus 3, hoping that the "small" amount of Oneplus 3 users wouldn't find out...
I'm not sure what think now
Yes, the manufacturer can modify the firmware to limit the PMIC to 2500mAh discharge only. This would probably save us quite a few cycles, not letting the battery dip below 3.5V.
What this means is that while we get a slightly lesser battery life (let's not forget, the lower the battery voltage, the faster the discharge, meaning the first 20% of your battery will last 2.5x longer than the last 20%!), at the price of prolonging the battery for about 20-25% longer. And this would mean you would need to charge 1.2 times more to diminish the effects of this change. So unless you started charging twice a day instead of once, from 0 to 100%, it should last longer on the long run, and last a bit less during the day.
OP not communicating this, however, is a big red flag.

FUN FACT: After 15 months, measured battery capacity is 81%, or about 2430mAh.

Hello, I recently received a brand new U11 to test drive and I depleted it and my HTC 10 which I have owned for 15 months. I then use a USB meter and my HTC 10 only charged to 81% of what the U11 charged to.
81% of 3000mAh = 2430mAh
Just some fun facts for those of us who have used the phone for an extended period of time or what to expect if you plan on owning it for this length of time.
Sounds about right, this is why I really miss removable batteries
im_high_tech said:
Hello, I recently received a brand new U11 to test drive and I depleted it and my HTC 10 which I have owned for 15 months. I then use a USB meter and my HTC 10 only charged to 81% of what the U11 charged to.
81% of 3000mAh = 2430mAh
Just some fun facts for those of us who have used the phone for an extended period of time or what to expect if you plan on owning it for this length of time.
Click to expand...
Click to collapse
Though this is a shame, I'm afraid that it's nothing special
Becuse of the QC3.0 , no body should use it unless if he in harry
@RogerF81 I agree its nothing special in my results; batteries are supposed to degrade overtime. It just using a device with 2430mAh is VERY noticeable.
Imagine buying a high end spec device with only 2430mAh. lol
There you go....
https://forum.xda-developers.com/htc-10/help/whats-current-battery-capacity-t3538773
And jup... last thing i read Battery Capacity is about 85% after 600 charging Cycles.
Haldi4803 said:
There you go....
https://forum.xda-developers.com/htc-10/help/whats-current-battery-capacity-t3538773
And jup... last thing i read Battery Capacity is about 85% after 600 charging Cycles.
Click to expand...
Click to collapse
When I do your test, I get Full charge: 3049000, does that mean it's 100 % (I don't have a USB meter) ? I have owned my HTC 10 for about 13 months.
@Cro Cop
Nope, that tests implies you never reset your phone and never erased battery stats, which most people on XDA have every time they flash a new ROM. You are probably near the 80-85% capacity mark.
Can you please try accubattery app to see how it's results compare to your more rigorous method. Accubattery states my capacity is 76% or 2277mAh. However it states it will get more accurate over charging cycles. I've had the phone since release day. Now switched off fast charge!
im_high_tech said:
@Cro Cop
Nope, that tests implies you never reset your phone and never erased battery stats, which most people on XDA have every time they flash a new ROM. You are probably near the 80-85% capacity mark.
Click to expand...
Click to collapse
But I did wipe battery stats several times at least (read somewhere it makes no difference) and flashed a RUU (reset) before nougat upgrade..
Accubattery also shows 100 % battery health based on 15 charging sessions
The battery life is atrocious even when new. I am afraid.
Using Accubattery I have an estimated 83% battery capacity, however this phone was replaced in February via Uh-Uh coverage. I broke the screen in my original phone and they gave me a replacement unit (To me it seems this was the case since the exterior was flawless again and I was given a phone with a new IMEI). It has been 6 months and I don't think I am such a heavy user to have degraded the battery that fast, does anybody think this might be resolved by taking the phone back for warranty? I even wonder if it is possible at this point :/ (My original 10 was bought may 2016 practically at launch) Thanks!
Really hoping LG V30/G7 has a removable battery
This is from my old M8, not sure how to read this and what level 2 health means.
LibertyMonger said:
This is from my old M8, not sure how to read this and what level 2 health means.
Click to expand...
Click to collapse
As per Android website 2 means Good.
cnu4u said:
As per Android website 2 means Good.
Click to expand...
Click to collapse
That's pretty good for an old device. Probably cause it's before the quick charge tech
@LibertyMonger
Good would just mean the battery is functioning. You could only have 50 percent of your cells left and it would still say "Good".
@gsw5700
I used AccuBattery and got 80% or 2,397mAh for estimated capacity, so my previous math was correct.
Damn! So accuBattery is correct, next phone needs to have removable battery, if there is such a thing sigh
Sent from my HTC 10 using XDA-Developers Legacy app
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
never do a full charge or discharge....
hold it between 20 and 80 then u got a good battery health... mine is 2644mah(accubattery)
my 10 is from 06.16
@gsw5700
I have purchased a battery replacement and will update this post when I successfully replace it next week.
@BitsnPiecez
I have heard of doing something like this before, and obviously you're degradation is smaller than mine by a bit. But that is just another extra several steps to take. Forcing myself to check the phone to see if it charged to 80% is a pain and then on many days I dont know how much i will use my phone, so charging it to 80% defeats the purpose of a larger battery. Hopefully once I replace my battery I can go another year without any major battery issues.

Battery life improvement after diy replacement

I have had this phone for around 17 months now. Accubattery was showing my battery health at 70% and I could barely make it through the day without multiple battery topups through the day.
I finally bought a replacement OEM battery off AliExpress. After having used it for 2 weeks,I can say the results are so much better.
I am running the weekly Lineage OS 15 rom.
What is the real capacity of that battery, did you measure it with AccuBattery? And give us link of the store
predragiPredrag said:
What is the real capacity of that battery, did you measure it with AccuBattery? And give us link of the store
Click to expand...
Click to collapse
Accubattery battery capacity hovers between 97 - 100% of the original values
Bought the battery from here :
http://s.aliexpress.com/36vaYZf2?fromSns=Clipboard
The tools provided to open the phone were a bit flimsy and took a bit of effort. I followed a YouTube video to see how to replace the battery

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