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[5z] Bad Service! Battery Changed 4 Months ago and now it is very Badly Degraded, Seeing Idle Drain.

AmitGarde
Community Legend II
Model Name: ZS620KL
Firmware Version:100.10.107.123
Rooted or not: Not
Frequency of Occurrence: Daily
APP Name & APP Version (If your issue relates to the app): Hardware issue related to new replaced Battery.
On February 24th i got my battery changed from authorised service centre by paying a certain amount thinking that i can use my Zenfone 5z for another 2 years, even when i was getting normal 4hrs of satisfactory SOT for normal use from my 2.6 year old original battery.
About Changed/Replaced battery :-
Until 4 months there was no problem with my changed battery i use to daily get 6hrs of SOT for normal usage. And there was no idle drain.
From last 15 days i started seeing a lot of idle drain issue where i always need to charge my device for 2 times in a day (4 months old new Battery). So here i thought it may be a software issue and i still awaited and tried many battery restricting features for day to day usage but nothing helped and belive me i use to put my device on charge daily with battery care features i.e scheduled charging,Switch by battery level,Dynamic charging upto 80% and many other workarounds but still behaviour of my battery remained as it is. And with frustration Later after 12 days i decided to factory data reset to see if that will help. But issue is still the same.
After Factory data Reset :-
Behaviour is still the same even after using all battery caring features,even i use auto start manager denied all apps and also have restricted many apps but no help.
Now what i am seeing is if i dont use my phone for so long or u can say if it is kept idle/Standby drain keeps running in background while super clean feature for all apps is On, as soon as i lock my device Drain is continous. you can say for for every 1.5 Hr of idle time battery drains 4-5 percent approximately.
Daily while i Go to sleep i have turned super saving mode On, what i see is if i keep my battery 20% before going to sleep at 4.30am until in the morning when i wake up at 10.30am i see that my battery is 2-3% remaining or sometimes phone is switched Off.
Now here i really doubt if my replaced/changed battery is original. Which is provided by authorised service centre. I trusted Authorised service centre for Original battery and so i decided to take a chance and what i now see is something fisshy here even after paying so much to replace a battery. How can a origianal battery degrade soo much just in 4months after replacement?? While my old original battery which came with device use to give me 4hrs of SOT even after 2.5 years of usage before replacement.
Here are some proofs with date and time how battery is degraded and keeps doing idle drain while i was working for long time without unlocking my device (Auto start manager all apps are denied)👇:-
At 4.55 pm 50%
screenshot-20210722-165522226-1.jpg
At 6.20 pm 46%
screenshot-20210722-182039476-1.jpg
At 8.03 pm 41%
screenshot-20210722-200303891-1.jpg
Now at night while going to sleep :-
At 4.25 am 20% (Super saving On)
screenshot-20210723-042506389-1.jpg
At 10.58 am 3% (Woke up)
screenshot-20210723-105804918-1.jpg
Overall SOT i am getting for normal use (4 months old battery only)👇:-
screenshot-20210721-212405833.jpg
Battery page doesnt show that idle drain i dont know why,but aside battery starts to drain continous in the background as soon as i lock my device. 🥺😰
I never had any issues with my Zenfone 5z till date but just taking my device to Authorised service centre to change my battery by trusting them ruined my all Flagship experince and now i am frustrated with such backup. Is my replaced/changed battery not an original battery..??
help me with the solution my battery is still new. I am sad with spare service.
@ARP_ASUS @Falcon_ASUS @Christine_ASUS @CH_ASUS @fussion_ASUS @Kris_ASUS @Gustav_ASUS @Chris1
Thanks!
55 REPLIES 55

kikoly
Hall of Fame II
AmitGarde

https://zentalk.asus.com/en/discussion/comment/178240#Comment_178240

Yes i will make a visit for sure.

https://zentalk.asus.com/en/discussion/comment/178205#Comment_178205

Let me tell you i have gone through every possible step also a factory data reset and there are no any heating issues nor any other problems observed everything is working flawlessly for me its about a new replaced battery which is faulty it seems.

Thanks for the information guys. I am making a visit to service centrr as early as possible.


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If possible, please leave the phone in the service center for testing to confirm whether the battery is good. Reflecting hardware problems in the forum will only be directed to the service center.

AmitGarde
Community Legend II
kikoly

https://zentalk.asus.com/en/discussion/comment/178290#Comment_178290

If possible, please leave the phone in the service center for testing to confirm whether the battery is good. Reflecting hardware problems in the forum will only be directed to the service center.


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With my faulty battery, case was like for 3 months battery was all good with 6hrs of SOT for normal use and no idle drain was observed but later the idle drain issue started just 20 days ago from now so i think even if i keep my device for testing it is hard for them to judge faulty battery but no problem i will make sure to follow ur step this time
Thanksalot again for your quicker responses meanslaot!

vkk178
Rising Star I
AmitGarde

https://zentalk.asus.com/en/discussion/comment/178293#Comment_178293

With my faulty battery, case was like for 3 months battery was all good with 6hrs of SOT for normal use and no idle drain was observed but later the idle drain issue started just 20 days ago from now so i think even if i keep my device for testing it is hard for them to judge faulty battery but no problem i will make sure to follow ur step this time

Thanksalot again for your quicker responses meanslaot!


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Is your issue resolved ? I too wanted to change my battery but looking at your experience ,am nervous . You can check your battery capacity with Accubattery.Run it few cycles to get a more accurate actual capacity report .

screenshot-20210810-174832027.jpg
Can some one tell me what tests are done by the mobile service center to diagnose battery ? Its quite normal for battery to degrade after 2-3 yrs but it seems svc center wants a visit just to DIAGNOSE for battery change .. What are they diagnosing & how ?

AmitGarde
Community Legend II
vkk178

https://zentalk.asus.com/en/discussion/comment/178302#Comment_178302

Is your issue resolved ? I too wanted to change my battery but looking at your experience ,am nervous . You can check your battery capacity with Accubattery.Run it few cycles to get a more accurate actual capacity report .

screenshot-20210810-174832027.jpg

Can some one tell me what tests are done by the mobile service center to diagnose battery ? Its quite normal for battery to degrade after 2-3 yrs but it seems svc center wants a visit just to DIAGNOSE for battery change .. What are they diagnosing & how ?


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I have submitted my device yesterday I had no choice than to reset my device again and again and submit my device to diagnose the real cause of issue in service centre. I got a call from Asus employ and he is cooperating with service centre they have asked me to wait till today and inform me until evening I am waiting for them to respond now ASUS employ who called me have asked me to stay worry free he will take care in my case and replace whatever is required. I will keep you updating here on furthur matter.
Thanks...!

vkk178
Rising Star I
AmitGarde

https://zentalk.asus.com/en/discussion/comment/180836#Comment_180836

I have submitted my device yesterday I had no choice than to reset my device again and again and submit my device to diagnose the real cause of issue in service centre. I got a call from Asus employ and he is cooperating with service centre they have asked me to wait till today and inform me until evening I am waiting for them to respond now ASUS employ who called me have asked me to stay worry free he will take care in my case and replace whatever is required. I will keep you updating here on furthur matter.

Thanks...!


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Hmm .. Not a very confidence inspiring flagship experience .. Multiple visits for a simple battery replacement . Are they doing R&D on your phone😂 ? Bad if this is your primary phone .
Do you know what they tested in the name of battery replacement ?
Asus Hardware is fine & the device is very capable but this sort of svc exp is disappointing . As much as ZF 8 is tempting , this one is putting me off .