False positive battery error or weak battery

[rfir6]

I have a note 20 5G.

The original battery that it came with after about 2 years, started expanding.  I took it to a mobile repair shop..  They swapped the battery.  The phone was working fine, but everytime i took a photo (esp if flash was on) the phone would switch off by itself and only way to turn it out was to plug in charger.  Found out this was due to a dodgy battery.  So they swapped it out again.  This time it all worked fine.

Problem was it only lasted about one year.  After that the battery started expanding again, prior to this it was showing the weak battery detected issue in battery status diagnostics .  Really?

Took it to a different phone shop in a hurry.  They swapped it out, saying the new battery was an original pulled battery.  I noticed in the shop that the weak battery detected issue in battery status diagnostics was still showing.  He said give it a few days after fully charging it and watch the drain, it should clear, if not we will change it.

The issue didn't go away.  So they swapped the battery out again.  This time they said it was a new generic battery however I noticed and pointed out the manufacture date was 2021 which was 3 years ago.  They said it should be ok.

Again I had the same weak battery detected issue in battery status diagnostics and showed them, they said the same thing again.

So now the phone still shows the weak battery detected issue in battery status diagnostics.  It says the battery will last 10hours in the settings.  I find that actual time while using the phone for just browsing internet and few social media apps lasts about 3 hours after which it needs charging again.

So my question is, is the weak battery detected issue in battery status diagnostics reliable?

If it is then does it mean they have installed another dodgy battery?

[Robin999]

Hi, and welcome to the UK community.

I think the problem here is the sort of repair shop you're using. Get it done properly at an authorised Samsung repair centre.

[TechZilla · Accepted solution]

I suspect they are using cheap third party batteries or secondhand batteries, this is probably the issue. You should really get it replaced by Samsung using a new official battery.

[rfir6]

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@rfir6 wrote:

I have a note 20 5G.

The original battery that it came with after about 2 years, started expanding.  I took it to a mobile repair shop..  They swapped the battery.  The phone was working fine, but everytime i took a photo (esp if flash was on) the phone would switch off by itself and only way to turn it out was to plug in charger.  Found out this was due to a dodgy battery.  So they swapped it out again.  This time it all worked fine.

Problem was it only lasted about one year.  After that the battery started expanding again, prior to this it was showing the weak battery detected issue in battery status diagnostics .  Really?

Took it to a different phone shop in a hurry.  They swapped it out, saying the new battery was an original pulled battery.  I noticed in the shop that the weak battery detected issue in battery status diagnostics was still showing.  He said give it a few days after fully charging it and watch the drain, it should clear, if not we will change it.

The issue didn't go away.  So they swapped the battery out again.  This time they said it was a new generic battery however I noticed and pointed out the manufacture date was 2021 which was 3 years ago.  They said it should be ok.

Again I had the same weak battery detected issue in battery status diagnostics and showed them, they said the same thing again.

So now the phone still shows the weak battery detected issue in battery status diagnostics.  It says the battery will last 10hours in the settings.  I find that actual time while using the phone for just browsing internet and few social media apps lasts about 3 hours after which it needs charging again.

So my question is, is the weak battery detected issue in battery status diagnostics reliable?

If it is then does it mean they have installed another dodgy battery?

I just checked out the cost for battery replacement by their mobile repair service and they said it would cost about £109.

Ouch!

Thats almost half of what a new or refurbished (grade A) note 20 5g costs to buy

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[AndrewL]

@rfir6: Further to the above, I strongly recommend that you arrange for your Galaxy Note20 to be inspected by a Samsung engineer at one of our authorised repair locations. This will ensure that genuine parts are used, and the that the phone will be returned to its default specifications.

To do so, please head to samsung.com > Scroll to the bottom of the page > Contact us, and get in touch via your preferred contact channel, and an advisor will be able to look into this further for you. 

I should point out that the third party repairs that you have arranged will have voided your warranty, so a charge will be applicable to cover the cost of the service and any necessary repairs. 

[TechZilla]

But how much have you already spent on cheaper repair shops changing your battery?

[rfir6]

under £40

[TechZilla]

Well £40 for 5 batteries and labour kind of proves that they were giving you pretty bad quality batteries. That would explain the constant problems.

[rfir6]

5 batteries?

First time it cost £40

Second time is cost same

its payment for the battery itself

[Robin999]

Well, you certainly got what you paid for there...cheap rubbish. If you're happy to risk damaging your device permanently or worse, a fire, then carry on regardless. If not, then for your safety, if not others, get it sorted properly.