Does anyone has battery swolen issue. Yesterday I noticed a little bump on back of my phone. On the right side on Poco logo. When I took my phone to service center they told me it's the battery that's Swollen and needs to be replaced at 2800 Rs. Iss it safe to continue using my phone without replacement. Our should I get a replacement from local repair shopThough I am sceptical about the quality of the repair.
Anyone else had same issue?
Also will the aftermarket battery will support fast charging
harshgohan said:
Does anyone has battery swolen issue. Yesterday I noticed a little bump on back of my phone. On the right side on Poco logo. When I took my phone to service center they told me it's the battery that's Swollen and needs to be replaced at 2800 Rs. Iss it safe to continue using my phone without replacement. Our should I get a replacement from local repair shopThough I am sceptical about the quality of the repair.
Anyone else had same issue?
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Yes, swollen batteries mean that the battery needs a replacement. Try to get a good brand or original battery in the after market. There is no way that it would be costing Rs 2800.
There is no harm in using your phone with a slightly swollen battery but I won't recommend that as it might cause other hardware issues due to its deformity in the long run.
Sent from my POCO F1 using Tapatalk
redhotiron2004 said:
Yes, swollen batteries mean that the battery needs a replacement. Try to get a good brand or original battery in the after market. There is no way that it would be costing Rs 2800.
There is no harm in using your phone with a slightly swollen battery but I won't recommend that as it might cause other hardware issues due to its deformity in the long run.
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I too was shocked when I heard the price for battery replacement there is only a small buldge near poco logo nothing major . But I am fearing that it may catch fire. I have a lot of videos where batteries explode.
Get it replaced
harshgohan said:
Does anyone has battery swolen issue. Yesterday I noticed a little bump on back of my phone. On the right side on Poco logo. When I took my phone to service center they told me it's the battery that's Swollen and needs to be replaced at 2800 Rs. Iss it safe to continue using my phone without replacement. Our should I get a replacement from local repair shopThough I am sceptical about the quality of the repair.
Anyone else had same issue?
Click to expand...
Click to collapse
My battery was swollen too, had to get it replaced. An aftermarket battery will cost you anywhere around ₹1000-₹1500 but it's not as reliable. I had mine replaced at the service centre for ₹2772 but it works really well now. If you can get the original one, please go for it, you won't regret it.
SAFA Mobile Battery For Xiaomi POCO F1 (I can't post the link as XDA doesn't allow me)
Get this on Flipkart! It's original. Although I feel that the price could be lesser. But, at least it's half the price at Rs 1499 and got 219 ratings with 4.5 star reviews and 6months warranty is also provided.
yes i already had that problem, after that little bump in battery your battery capacity starts to degrade to 0 capacity. i have used the battery until it's unable to work anymore. After that i purchased a battery from Amazon (Because it is very expensive in service center around 2800), and a screw driver kit, i replaced the battery myself, And the battery is original manufactured by Everup company. https://www.amazon.in/dp/B0836SP516/ref=cm_sw_r_cp_apa_i_iuhwFbQ6C51E0
I went to service center and I was asked for a waiting time of 10days. I have exams so I am waiting for this month end. Thank you guys for valuable feedback.
As I am seeing a lot of poco F1 devices are getting swollen batteries. May be due to cost cutting of the product
The original battery cost 1999.
The price list from poco themselves http://www.poco.in/in/service/sparespartsprice/
abhinavm24 said:
The original battery cost 1999.
The price list from poco themselves http://www.poco.in/in/service/sparespartsprice/
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Cost 1999
Service Charge 350
GST 18% on both 63+359.82(422.82)
Adds up to 2771.82
Source: I got it replaced at the service centre because I wanted to preserve the warranty.
How many of my Friends Have battery swollen issue And are using their charger on inverter supply
After the battery in my 10 month old device first showed degradation I switched from the stock 18W charger to a 10W charger that came bundled with my old Redmi Note 3. Xiaomi has definitely cut corners in order to keep prices down or its QC 3.0 as some Mi 8 owners had also reported premature battery degradation. Kernel profile reports 10% loss while Accubattery estimates battery health at 80%(originally at 93/95%). Nearly 4 year old Redmi Note 3 and Redmi 3s still have in excess of 85% battery health. I keep all my devices I keep battery charge between 40-80%. No fast charging mods or custom thermals. No gaming except a few casual ones recently. Battery temps were moderate for the most part.
Purely in my use cases I used to get 13-15 hours SoT which is down to barely 11 hours now.
Hoping to get another year out of the battery. After that will replace with genuine battery. Third-party party ones usually aren't good. Some give good bb intially but by 6 months it would have degraded a lot.
Mine After 1.5 yrs of purchase Already down to 71% And only 2800 mah backup left of 4000 mah surely battery is one of the aspects where Xiaomi has cut Corners.
Looking best online seller and manufactured for Poco F1 battery
I am also facing battery bit swollen issue my Poco F1 . I am looking best battery and its backup for the replacement . Please suggest me that best battery manufactured and online seller.
My battery was around 80-90% not swollen. "Was" because I had mainboard issues and the authorized service center didn't keep battery charged.
It died in just 2 months cause I opted to buy 2nd hand replacement board from China. You all should see the price of a brand new mainboard from Xiaomi/Poco, almost the cost of a new phone! At least they replaced my battery.
harshgohan said:
Does anyone has battery swolen issue. Yesterday I noticed a little bump on back of my phone. On the right side on Poco logo. When I took my phone to service center they told me it's the battery that's Swollen and needs to be replaced at 2800 Rs. Iss it safe to continue using my phone without replacement. Our should I get a replacement from local repair shopThough I am sceptical about the quality of the repair.
Anyone else had same issue?
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Click to collapse
Bro get the repair done by service center. There are chances that the phone's battery will Explode on heavy usage, and I am sure that you don't want to buy a new phone for now.
Rs 2800 is good if you are replacing it at the official service center. Don't go at local repair shop, as if some other thing will happen to your phone then they will say that they were not responsible for that.
So please don't use your device much and get the replacement done.
Hi, late to the thread but i faced a similar issue with my poco f1 with swollen battery n drain, got it replaced but again new battery too has the same swollen problem and Battery drain in just one month. Could it be the motherboard or battery again?
To prolong the useful life of the battery I have resorted to bypass charging in late May. Since then only 12 battery cycles have been used in over 1.5 months! Over the previous 20 months the daily average was 1.1/day. SoT had fallen down to ~10 hours. But now no anxiety about battery drain as long as a power outlet is nearby. Thermals are better as battery doesn't charge and discharge frequently when plugged in. In my older Redmi devices wherein bypass charging worked from the very beginning the battery health is still in the 80-85% range even after 4+ years.
apachemanz said:
Hi, late to the thread but i faced a similar issue with my poco f1 with swollen battery n drain, got it replaced but again new battery too has the same swollen problem and Battery drain in just one month. Could it be the motherboard or battery again?
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Most likely the battery. Was it a third-party one? Did you monitor the battery health with Accubattery or similar? The built-in battery tool might not work with unofficial ones.
Related
Affected Device
Manufacturer: Samsung
Make: Galaxy S5
Model: SM-G900T
State When Bought: Certified Refurbished + Carrier Unlocked
Store Bought From: Amazon.com
Hi.
So far, my Galaxy S5 I bought back in August has been running into issues lately. Here are the situations I've been through lately:
-The charging port on my S5 is broken. I went to my local repair shop and the guy there said that it's $129 USD to repair the charging port (that's over 1/2 the cost of the phone itself) because the people repairing my phone have to remove the glass to get access to the port itself. The guy told me to go buy an external battery charger and new batteries instead, recommending me an external battery charger and 2 batteries on eBAY. The batteries and charger were new and only $15.
-Now here's where the problems with the batteries start. After using my phone with the new battery for 15 minutes and draining from 60% to 39%, it shut off. I tried turning my phone on again, but it just wouldn't. So I charged it to 100% and put it into my phone, but when I turned my phone on, the battery starts at 81%. No big deal for me, so I start using my phone as normal.
-Now: drainage issues. My S5, no matter what ROM I flash on it, whether it be CM-based or TouchWiz-based, will drain from 81% to 0% in just ONE HOUR AND THIRTY MINUTES, and this was my defective battery before it was replaced with the ones I got from eBay. I STILL have the same problem to this day and I don't know what's going on.
-And finally, the overheating issues. When I start up and use my phone on any TouchWiz-based ROM, it will heat to somewhere about 100 Degrees Fahrenheit to 150 Degrees Fahrenheit based on what I feel on my hand. So far I've found NO WAY to fix this at all, so please help
I appreciate all the helpful comments and I hope to get my phone back in shape soon.
Since you've gone 3 days with no help, I'll try to give you what very limited help I can.
First, the overheating and short battery life go hand-in-hand. Assuming this isn't a straight up hardware issue, it would seem that the processor is running hard servicing some app. Have you added anything recently that might be running in the background? If you aren't sure what the possible cause may be, maybe using a power monitoring app like Better Battery Stats would be worth a try.
As for the early shutoff, there is such a thing as battery calibration. Don't know much about it myself, but there's information out there.
Also, I suppose you could just have a bad battery. New doesn't necessarily mean good. Ebay stuff is not always trustworthy.
When I got my G5 (Verizon VS987) I also got a spare battery and charging dock as a promotional extra.
The charging dock is connected to the USB port on my PC. When I swap batteries I put the discharged one in the charging dock and remove it when the lights indicate it's fully charged. If I don't swap batteries for a few days I'll stick it back into the charging dock for the few minutes it takes to bring it back to full charge.
Now I notice one battery is swollen, as if from charging too fast or ???
It still fits into the phone with some difficulty but it does fit.
I'm wondering if I should discard it or keep using it, wondering if it can damage the phone?
Any thoughts?
Do not use the swollen battery any more. Do not toss it in regular trash either - find an authorized battery recycling operation in your area. If you can't locate one immediately, store the battery in a dry, cool spot with electrical tape over the contacts until you can dispose of it properly. Continued use may cause the battery to fail and catch fire and/or explode.
Batteries can swell due to overcharging, but also wear and tear aging with frequent full charge cycles. If you've been using the battery daily for about a year it is not uncommon for it to show such signs of wear. Failure rates are also more common with cheaper, off-brand batteries that aren't made as well to begin with. Buy a replacement battery and make sure it is OEM quality.
I've had this happen once before with a Motorola V3 battery so you see how long ago that was!
I believe it's the USB port allowing charging at a faster rate than the factory charger? Two requirements, the charge must be from a USB port and the battery must be very discharged.
The swollen battery is genuine LG, sent direct from LG, whatever quality that might be. Both the swollen Motorola batteries continued to work just fine in the V3, the LG battery works but is VERY difficult to remove and is now out of the phone forever.
xs11e said:
I've had this happen once before with a Motorola V3 battery so you see how long ago that was!
I believe it's the USB port allowing charging at a faster rate than the factory charger? Two requirements, the charge must be from a USB port and the battery must be very discharged.
The swollen battery is genuine LG, sent direct from LG, whatever quality that might be. Both the swollen Motorola batteries continued to work just fine in the V3, the LG battery works but is VERY difficult to remove and is now out of the phone forever.
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It's not a problem of faster charging, but overcharging. The longer and more often a battery is charged 100% and left there, the quicker it wears out. If the battery is about a year old with daily use like this, a bit of swelling isn't unexpected.
There is no immediate threat from swelling but it is the start of failure if allowed to continue use. You surely don't want it expanding inside the phone from heat until it gets stuck and/or cause GPS, volume or other contacts to mess up by expanding the frame, etc.
Batteries aren't too expensive so order another one.
Not sure I agree, evidence seems to point to heat as the culprit since the battery wasn't charged that often.
Anyway, OEM batteries are available on eBay for under $12 and one should arrive Monday.
xs11e said:
Not sure I agree, evidence seems to point to heat as the culprit since the battery wasn't charged that often.
Anyway, OEM batteries are available on eBay for under $12 and one should arrive Monday.
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I wonder if those are legit LG made.
Yup, why wouldn't it be? It's a unique battery for an obsolete phone, everyone that has any quantity is dumping them. The one I'm getting is from an "overstock" dealer.
xs11e said:
Yup, why wouldn't it be? It's a unique battery for an obsolete phone, everyone that has any quantity is dumping them. The one I'm getting is from an "overstock" dealer.
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Yeah I was just curious. Will buy few myself that's not a bad deal at all. Yeah I can't blame people, this will be my last LG phone. Great specs and price, but build quality trash.
Sad part I know 3 people with LG V20 who are also having build quality issues. Speaker going on all of them and this is a common issue.
Nick216ohio said:
Yeah I was just curious. Will buy few myself that's not a bad deal at all. Yeah I can't blame people, this will be my last LG phone. Great specs and price, but build quality trash.
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I guess I've been lucky, I've had very few problems. I really miss an unlocked bootloader and a rooted phone with a custom ROM but this seems to do the job other than about 90% of the "wonderful" features being stuff I don't want, don't use and would delete if the phone was rooted..
I really wanted the removable battery and the SD card, I think LG is my only option for both isn't it?
I have no idea what (or IF) my next phone will be, maybe I'll drag out my old Motorola V3 and use it? <G>
Seriously, no kidding, it's been all downhill since my BlackBerry Bold.
I bought two spares batteries, one from Ebay with the external charge case that looks genuine but the battery lasts about 20-25% less than the original battery and a second one from Aliexpress that lasts half the time of the original battery. The one from Ebay ways the same as the original, the one from Aliexpress is lighter.
On both the batteries the green heatshrink is not exactly the same color as the original one.
So I think none of those batteries you can buy from those sites will have the same capacity as a original battery from a official reseller.
The one I got seems to be OEM, I suspect the ones you got were just old, I can't imagine anyone making an aftermarket battery for such a low sales volume phone.
I believe any battery you get will be 3 - 4 years old before you get it, that may be why the one I got took almost 40 hours to reach full charge.
So far it seems it will last as long as the original but who knows?
xs11e said:
took almost 40 hours to reach full charge
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You have some abnormal batteries, cables, and/or chargers...
No, all working as they should.
Sent from my VS987 using XDA-Developers Legacy app
Guys, the backside of my phone is slightly bulged on the left side of the phone (the side where no buttons). Is it because of the battery? Because in recent days my phone gets hot like a frying pan. If the bulge is because of the battery swelling then I'm planning to buy a new battery.
Since some people said that the batteries bought from sites like AliExpress have poor battery life, I am planning to buy a genuine Lenovo battery. Has anyone bought the original one? If yes how is it's performance? What is your opinion on buying the original one?
Haven't anyone replaced your Z2's old battery with the genuine Lenovo one? Can anyone answer please?
Check this thread
https://forum.xda-developers.com/le...eplacement-t3889607/post78838138#post78838138
niyonsv said:
Guys, the backside of my phone is slightly bulged on the left side of the phone (the side where no buttons). Is it because of the battery? Because in recent days my phone gets hot like a frying pan. If the bulge is because of the battery swelling then I'm planning to buy a new battery.
Since some people said that the batteries bought from sites like AliExpress have poor battery life, I am planning to buy a genuine Lenovo battery. Has anyone bought the original one? If yes how is it's performance? What is your opinion on buying the original one?
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Click to collapse
Hey bro have you got any solution. I have same problem
raj1221 said:
Hey bro have you got any solution. I have same problem
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Bro if the battery of your Z2 is swollen then replace it immediately. I replaced mine two times with original Lenovo battery, from official Lenovo service centre, but the first time it failed and lost my money. Now the second battery is running better so far. Please keep in mind that some ROMs will also impact the life and temperature of the battery. I had the issue with AEX 6.x. I'm now using AOSiP 9 without any issues, but it's development has stopped a while ago.
Also if you are buying original genuine Lenovo battery then it'll cost almost triple or quadruple times the money of non genuine one. My friend has bought one from Maxbhi.com and hasn't had any battery issue so far.
niyonsv said:
Bro if the battery of your Z2 is swollen then replace it immediately. I replaced mine two times with original Lenovo battery, from official Lenovo service centre, but the first time it failed and lost my money. Now the second battery is running better so far. Please keep in mind that some ROMs will also impact the life and temperature of the battery. I had the issue with AEX 6.x. I'm now using AOSiP 9 without any issues, but it's development has stopped a while ago.
Also if you are buying original genuine Lenovo battery then it'll cost almost triple or quadruple times the money of non genuine one. My friend has bought one from Maxbhi.com and hasn't had any battery issue so far.
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What is the cost in lenovo service centre and i am using PE 9.
raj1221 said:
What is the cost in lenovo service centre and i am using PE 9.
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They charged me ₹1500 then. I think better buy from Maxbhi.com like sites and change ourself. But now I stopped using this phone due to multiple accidental damages.
Bulging is bad battery
i had bulging battery too; please look into my reply in this thread
https://forum.xda-developers.com/lenovo-zuk-z2/help/original-battery-z2-plus-t4034743
niyonsv said:
They charged me ₹1500 then. I think better buy from Maxbhi.com like sites and change ourself. But now I stopped using this phone due to multiple accidental damages.
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Hey bro i think m going to buy from maxbhi.com is it going to be a good or not..?
raj1221 said:
Hey bro i think m going to buy from maxbhi.com is it going to be a good or not..?
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I'm not 100% sure, but one of my friends is using a battery from maxbhi, for Z2 itself for many months. His phone doesn't have any issue till now. They are cheaper in maxbhi.
The Lenovo one costs too much but they don't give any warranty even if it not working in the next day. My first replacement battery costed ₹ 2000, 1500 for the battery and 500 for service charge, and they didn't give any bill or warranty. Within 3 weeks it stopped working. When I reached the service centre they said that I had to buy a new one for 2k. After a bit long fight I had to buy new one without service charge that's how it became 1.5k.
If my Z2's battery stops working, definitely I won't buy the original.
Sent from my OnePlus7T using XDA Labs
niyonsv said:
I'm not 100% sure, but one of my friends is using a battery from maxbhi, for Z2 itself for many months. His phone doesn't have any issue till now. They are cheaper in maxbhi.
The Lenovo one costs too much but they don't give any warranty even if it not working in the next day. My first replacement battery costed ₹ 2000, 1500 for the battery and 500 for service charge, and they didn't give any bill or warranty. Within 3 weeks it stopped working. When I reached the service centre they said that I had to buy a new one for 2k. After a bit long fight I had to buy new one without service charge that's how it became 1.5k.
If my Z2's battery stops working, definitely I won't buy the original.
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Cool thanks bro ...lets see what happens i ordered the battery from maxbhi.
raj1221 said:
Cool thanks bro ...lets see what happens i ordered the battery from maxbhi.
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you got battery from maxbhi? hows it please review it to help others also.
aasim92 said:
you got battery from maxbhi? hows it please review it to help others also.
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They don't have stock bro..?
Avoid Maxbhi for battery
looks like they do not have battery since 1 year; whereas they are good for LCD and touch screens, other parts are listed but generally never available with them
The battery from maxbhi is out of stock, The ones from AliExpress costs 1100 INR with shipping, I just have to check with the Lenovo service center then. If it's not more than 2000 I'm ok with it. As zuk z2 form factor is too good.Will update later guys.
Hi
I want to reuse my ZUK we have any link from ebay or AliExpress with reliable battery?
As title says. Is it worth it? I'm hoping to at least getting 4-5 sot with real original battery from the lg itself.
Before this i bought a battery from a random merchant with good testimonies. But the battery i got cause the phone to turn off itself while still having about 30% percentage after few months.
So should i giving a hope to this phone or buy a new phone with gigantic battery capacity?
Original batteries that you may find have all been produced some years ago, I think that would be better to buy a recently made aftermarket battery, such as VHBW or Patona. Throwing away the last flagship phone designed with a replaceable battery because you don't want to change the battery is nonsense: with 30€ you can buy two or three batteries.
tremalnaik said:
Original batteries that you may find have all been produced some years ago, I think that would be better to buy a recently made aftermarket battery, such as VHBW or Patona. Throwing away the last flagship phone designed with a replaceable battery because you don't want to change the battery is nonsense: with 30€ you can buy two or three batteries.
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I can't find available stock for both those brands you mentioned.
And also I live Indonesia, I guess I'll give a try to come to service center and see if they still have a battery stock
nvlicious said:
I can't find available stock for both those brands you mentioned.
And also I live Indonesia, I guess I'll give a try to come to service center and see if they still have a battery stock
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I suggest you do yourself/have somebody adapt the s7edge cell to the G5 circuitry. On r/LGG5 you should find all the info on this - other paths may be getting a third party G5 replacement, but be wary of inflated claims (3000 mAh is the most you can fit in the G5 OEM battery form factor.
Sent from my LG-H850 using XDA Labs
Hey guys sorry long post ahead.
I bought my poco last 2018 and the original battery died last year 2022. I bought a replacement battery which lasted me march this year because it bloated and bought another one. My first purchase was a defective one it shuts down at 50% and bought a 2nd one and the issue is it drains fast from 100% to 80% and returns to normal drain from 70% to 20% and then shuts down. I did flash many roms and did some research but the problem still persist and i cant find any answers. Any suggestions would be greatly appreciated.
Note: My 2nd battery purchase was fine when i use it, After i charge it for the first time the problem happened until now. anyone experience this kind of sorcery?
Maybe your charger is the problem, try with another.
Flashing rom won't fix the issue, this could mainly be due to either a battery issue or just some software issue that's causing your battery drainage. Otherwise I'd recommend you to just check the charger as well just in-case.
Even when flashing rom you've got to remember that bloat is usually also a cause for most battery drains nowadays
Thank you guys for the suggestions. I will try another charger. Honestly my charging cable has issues though but i don't know what's the relevance of the charger and cable with the draining of the battery. Please enlighten me.
Install Better Battery Stats to check for Wakelocks, Alarms etc. What's the Deep Sleep percentage? 99% time it's the battery to blame.
UPDATE:
I change cable and charger but it persist. I installed Ampere and checked the discharged and minimum is 290ma ranging to 800ma. I think the battery is to blame.
Osiris23 said:
UPDATE:
I change cable and charger but it persist. I installed Ampere and checked the discharged and minimum is 290ma ranging to 800ma. I think the battery is to blame.
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Use 3c Battery Manager to check battery drain in the background even even the device is locked for better stats. How old is the battery?
just newly bought this month. After i installed the battery it has like 70% percent in it and i drained to to 0% then i charged it for the 1st time it reached 100% and drain fast to 80% and slowly draining like normal from 60% percent to 30% to 40%. when it reached 20% i autmatically shuts off.
Osiris23 said:
just newly bought this month. After i installed the battery it has like 70% percent in it and i drained to to 0% then i charged it for the 1st time it reached 100% and drain fast to 80% and slowly draining like normal from 60% percent to 30% to 40%. when it reached 20% i autmatically shuts off.
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Looks like battery issue. Check it for a few more days and if it's not resolved get it replaced within the warranty period. Majority of third-party batteries are utter rubbish though.
BM4E batteries here are rubbish. I think they're old stocks and not genuine. I will try to buy an asus zenphone pro max M1 battery and modify it. If its still not working then its time to replace it.
amn1987 said:
Looks like battery issue. Check it for a few more days and if it's not resolved get it replaced within the warranty period. Majority of third-party batteries are utter rubbish though.
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just gonna ask some noob question. Does 3c battery gonna fix battery calibration? its just a monitor app right?
Osiris23 said:
just gonna ask some noob question. Does 3c battery gonna fix battery calibration? its just a monitor app right?
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Of course not. It's better than Ampere to check idle battery drain. That's all.
Osiris23 said:
BM4E batteries here are rubbish. I think they're old stocks and not genuine. I will try to buy an asus zenphone pro max M1 battery and modify it. If its still not working then its time to replace it.
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Click to collapse
Initially when Xiaomi had priced the battery exorbitantly I had flirted with the idea of modding ZP MPM1 battery but I had no experience with soldering and Asus wasn't selling the batteries separately. I wasn't particularly enthused about buying third-party MPM1 batteries of questionable quality so I was just waiting patiently.
Later I was fortunate enough to snag an official one just some months before Xiaomi India permanently discontinued all spares including the battery for F1. No advance intimation to the users at all. Just dropped all support out of the blue. Battery price had been massively cut so I was actually thinking to buy another one. For all my future devices I plan to buy a replacement battery in the 3rd year. Currently using Poco F4 which cost nearly 2.5x compared to F1 so might stock two batteries if possible.
Third-party batteries might not fare well with 18W charger. It might be better to use a 10W charger instead.
amn1987 said:
Initially when Xiaomi had priced the battery exorbitantly I had flirted with the idea of modding ZP MPM1 battery but I had no experience with soldering skills and Asus wasn't selling the batteries separately. I wasn't particularly enthused about buying third-party MPM1 batteries of questionable quality so I was just waiting patiently.
Later I was fortunate enough to snag an official one just some months before Xiaomi India permanently discontinued all spares including the battery for F1. No advance intimation to the users at all. Just dropped all support out of the blue. Battery price had been massively cut so I was actually thinking to buy another one. For all my future devices I plan to buy a replacement battery in the 3rd year. Currently using Poco F4 which cost nearly 2.5x compared to F1 so might stock two batteries if possible.
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Lucky you. unfortunately no ones selling authentic bm4e's here even xiaomi's service center. I agree with you on buying 2 to 3 spare batteries. I will try to find authentic ZP MPM1 batteries or atleast working third party.
I do not know this particular model or battery, but a while ago, I had a smartphone that was draining the battery like crazy. The same battery with the same ROM was doing fine in another phone of the same model. So sometimes, the phone itself is the issue.