3T battery has 20% less battery capacity [2742mAh instead of 3400mAh]

[Triversity]

So I've noticed that my 3T battery has about 20% less battery capacity than advertised.

And I've used an external amperemeter to measure the capacity. I've let the phone turn off und charged it while being off until no current was flowing anymore. Here is a picture of the result:
2742mAh!

The thing is that I have found another person that used the exact same amperemeter and measured the same way. https://xdaforums.com/showpost.php?p=70254148&postcount=344
His result: 3339mAh which is much closer to the advertised number and would be absolutely acceptable.

So either I'm very unlucky with a bad battery or the batteries have such huge capacity fluctuations.
I've contacted OnePlus, but currently they deny that there is anything wrong with it. They said they'll forward it to their engineering, which basically means they don't care. (If they did they would get ahold of my device and see what's wrong with it)

So I urge more people to measure their phones capacity to see if there is something wrong with it. 20% less capacity is not acceptable in my opinion.
Search for "USB amperemeter" if you want to find the same device or something similar to what I used.

 

[saarxee]

Really??

 

[Deleted member 384713]

Lipo voltage is 3,7V
Maybe you need to convert your results to this valtage.

 

[Batfink33]

According to Accubattery I'm at around 95% full charge with my brand new OP3T. It should really be 100%.

 

[eddymonti]

I use accuBattery and the best read I had on charging was 3,250mAh. But I can see the missing 150mAh being in below 0% battery cause I've found that it still has battery below that (I was able to completely discharge it which was below the android shut off point, with a trick, but I don't recommend doing it).
So ye, I think mine is close to the 3,400 value give or take a tiny bit (at least 3,300).

 

[NoLunchBox_]

My battery reads 3211mAh on Accubattery. Not sure how accurate this is though but I guess it's okay since I've charged it to 100% a couple times. Not sure.

 

[cethafralo]

Hi I have the same measuring device as you posted and mine records 3087mah from a powered off 0-100% charge.

Using the same device to measure my old worn out nexus5 and the result was very close to the spec capacity, surprisingly little battery capacity lost due to age.

For me I bought the 3T for the increased battery compared to the 3. Batteries wear out over time I paid extra to have more to work with long term.

So while my numbers are better than OP's I'm unhappy too, I may as well saved the £80 and bought the 3000mah 3.

Edit: The Accubattery battery app says I have 94% battery health, I have been running it for a couple of weeks

 

[Nomack1988]

Let's compare our results.



Wysłane z mojego ONEPLUS A3003 przy użyciu Tapatalka

 

[neinfricatu]

I also have 94% capacity in accubattery. I am quite sure that this is an inacurate measurement of the app for the 3T, and not some problem with the new battery.

 

[cethafralo]

I would not expect software based measurement to be accurate, though it is interesting many of us are seeing 94-95% "health".

The OP and I have used an actual hardware based measuring device, while cheap (couple of bucks on eBay - search for USB doctor) its meant to be relatively accurate and the model pictured apparently comes pre-calibrated from the factory.

 

[king231]

Mine says it's 3400mah

 

[OcazPrime]

the app kernel adiutor tells you your used mah in your battery. for most phones the mah a phone can use from its battery is about 92-95% if its labeled capacity.
Also u should trust your phone's system apps. Tools can always have those problems or calibrations. Use something like CPU-Z to check your phone specs. Your phone knows better than an external tool.

 

[ariesfung11]

Mine also 3000 mah in CPU-Z.....

---------- Post added at 07:48 AM ---------- Previous post was at 07:44 AM ----------

Just check on the internet, it said the CPU-Z is not updated the information, please try another to check it.

 

[smilirulz]

Im pretty sure that 5% battery is kept for clock and other stuff that needs battery ( just my oppinion ). Anyway, getting 1,5 days of battery is more than enough for me + the amazing dash charging which does the job pretty well, they could take 50% of the battery, if i'm still getting these results. Also,with nougat, things are getting better and better for me.

 

[ludester]

if this device sits in between the charger and the phone, use a regular charger instead of the dash charger to see if it makes a difference. Dash charger may be messing with your device.

 

[B3501]

This kind of worries me as I've come from a 6P which had battery shut downs at 20%+ because of fast degradation, losing 1000mAh in a year. Hope this isn't a side effect of fast charging?

 

[Triversity]

Guys, please don't post those software calculations here, they are not accurate.

Use an external measuring device. Like this https://www.amazon.com/PowerJive-Voltage-Multimeter-chargers-capacity/dp/B013FANC9W
Let the device turn off due to low battery, then charge while the phone is off until current stays at 0.

if this device sits in between the charger and the phone, use a regular charger instead of the dash charger to see if it makes a difference. Dash charger may be messing with your device.

I did.

 

[prellele]

I would not expect software based measurement to be accurate, though it is interesting many of us are seeing 94-95% "health".

The OP and I have used an actual hardware based measuring device, while cheap (couple of bucks on eBay - search for USB doctor) its meant to be relatively accurate and the model pictured apparently comes pre-calibrated from the factory.

Just purchased that doctor I'll tell my measurements when this thing arrives.

 

[Triversity]

Just purchased that doctor I'll tell my measurements when this thing arrives.

Make sure you purchase a device that can measure mAh. I've seen some that apparently only show voltage and current.

Also, update on my battery soon, I've got some interesting news.

 

[prellele]

Make sure you purchase a device that can measure mAh. I've seen some that apparently only show voltage and current.

Good advice. I ordered one looking like yours, so I'll think its fine