[OnePlus 3T ROMs, Kernels, Recoveries, & Other Deve] :
3400 mAh battery

Some devs and even the referenced xda featured article constantly claim that the 3t has a 3000mAh battery with 4.4 V to "pretend" to be a 3400mAh battery. This is NOT true in - at least - three points:

battery is shipped with 3400mAh, not with 3000mAh.

4.4 V is not the voltage the battery is supplying the SoC with, but the charging voltage.

battery is supplying the SoC with 3.85 V.

Sadly, if you repeat proved to be false information often enough, it gets it own life... Repeating this false information often enough make people think, it's a fact - but repeting doesn't make it a fact, even if people think so.

It's also sad, that xda allows this false information to be around in one of their featured articels for three months, but I think they just got traped by this "own life" of this piece of information.

But read yourself, do the maths yourself, see the pictures (thanx to [MENTION=3044422]mad-murdock[/MENTION] for finding the pictures!) yourself and make your own conclusions, since this is the only way to overcome an internet hoax:

Thanx. I'm still searching to understand. I think the author of this article is confused about the battery:

Now what? Is it 3000mAh or 3400mAh, or both at the same time... Oxymoron.

Obviosly the author is mixing up things here: if you increase voltage, don't change the amperes, the wattage goes up. Any way, let's try to understand what this guy is explaining (somehow): as one comment states, you can compare battery capacity by mAh only if the voltage is the same. If you want to compare capacity with different voltage and/or different ampere hours, you need to do the conversion to Wh (if you like to do the maths on your own: http://www.rapidtables.com/calc/electric/mah-to-wh-calculator.htm ).

3000 mAh at 4.35 V = 13.05 Wh

3000 mAh at 4.4 V = 13.2 Wh

This would mean a capacity increase of 1.15 %.

3400 mAh at 4.4 V = 14.96 Wh

Compared to 3000 mAh at 4.35 this means an increase of roughly 14 %.

3400 mAh at 4.35 V = 14.79

Compared to 3000 mAh at 4.35 this means an increase of roughly 12 %.

This means if the ONLY change, oneplus did to the battery was changing V from 4.35 to 4.4 V, the 3t has 1 % more battary capacity, what is much less, then they promised.

Don't get me wrong: I know companys are lying in ads (and perhaps in datasheets, too), and I tend to belive [MENTION=3115338]smoki3[/MENTION] - I'm just searching for a source for the real numbers, because the numbers from the article claim, that the increase of V by 0.15 is an increase of 400mAh; this is just impossible. If I had to put my judgement of reliability of information in order: [MENTION=3115338]smoki3[/MENTION] (that's why I have asked in the first place), oneplus datasheet, ..., ..., ..., the article you mentioned.

BTW: if you want to increase the capacity by 10 % by increasing voltage alone, you would need in our case more then 4.8 V, what is insane IMHO - but who knows... I'm really looking for the real numbers. Could it be, that oneplus has increased voltage that high???:confused::confused::confused::confused:

EDIT:

I'm to coward to disassemble my device - but there are people around with larger balls then me:

https://www.myfixguide.com/wp-content/uploads/2017/01/OnePlus-3T-Teardown-27.jpg

If you think, they can print whatever they want to the battery, lets have a look at oneplus at United States Federal Communications Commission:

https://fccid.io/document.php?id=3202508 (search for blp633 the 3t's battery part number)

I consider the fcc document as the most reliable source, yet.

Bottom line:

This is the battery we have in our 3ts:

3400 mAh at 3.85 V = 13.09 Wh

This is in 3s:

3000 mAh at 3.8 V = 11.40 Wh

From 3 to 3t we have an increased capacity of 14,8 %