Where is my 3800 mAh? (Edit: Oh. there it is)
588866
EDIT:

Alright so I used it for some time, and I was probably wrong about the battery.

At first I was disappointed that I was not getting the huge battery life that people reported, such as the people that talk about getting 48 hours of battery life, since under my usage I can drain the battery in a hot flash in like 1 hour, and as of now I apparently average 7-8 hours of battery life.
But I concluded that it was because I was running programs like The World of Magic, and it eats the battery like no other and can not be compared to texting and checking mail.

I probably jumped to conclusions too fast when the battery estimator showed 2300 mAh
The estimate currently is 3797 mAh +/-19%
I can probably now safely say that I got exactly what was advertised.
And though not as amazing as I thought, it is exactly what this battery is supposed to be capable of. For all I know.

----------------

After about 4 complete uninterrupted charges and discharges, I am also getting an battery estimate near 2300 mAh.

I don't care that the price is low (the reason it gets 2 stars instead of 1 haha.) The product has nowhere near the advertised capacity, and that is just WRONG...

If it has to with that irritatingly persistent excuse of training the battery right, This product is a Li-ion battery and I do not believe they can gain capacity by cycling. Li batteries can only lose their capacity over the months or years.
I also read that full charges and full drains are actually not good for Li batteries.

My battery cap is fine and works properly, and did not break, and will probably stay that way as long as you are careful.
It is kinda ugly. Not good if your reason for accepting the appearance is for the doubled battery life. Because your battery life is only going to increase a little.

I may return to comment if I have news, but as for the time being,
know that this product is basically an over-sized 2200-2400 mAh battery.
2690775
slim sleek nice aluminum , no where near 8000 mah only 6452 mah after cycleing 3 times, now for the soso it stops sometimes on dishcharge and there no power button dead so i decided to drop it 3 inchs of counter and it started working again 30 mins and it stopped charging phone again dropped 3 inchs off counter and started charging again.
4528288
I expected that this would be a replacement of the OEM's battery because of the specifications, but alas, seems to only provide a max of around 3hrs under nominal load when my old battery was pulling ~5.5 when it was new.

Tough to complain though. After all, this is 1/3 of the cost of a replacement, so because I'm getting more than 1/2 of my old run time, seems to be a better value, eh?

Interesting note that I would like comments on... About 3 weeks after using the battery, my motherboard stopped charging any batteries (the old OEM, this one, etc.) I had Dell come out and replace the board, and things seem to be working again, but since this problem occurred recently after starting to use this battery, I'm wondering if it damaged my charging circuits on my system board. Anyone else have a similar problem?
1645356
Amazon listing for this product seems to imply it's 63.5 Wh; My mid-2009 Macbook Pro sees it as full charge capacity 5295mah, but I sort of expected that, due to the low price.  All that said, I'd buy it again.  The tools worked, and the install was easy.
2765807
It can't be a 2950 mAh battery. Out of the box it lasted as long as the original one. Moreover, it wears down very fast.

I bought it on May 13 and I already need a new one because I can't even use my GPS while plugged to the charger...
3406515
Hopefully I will be able to find a fresher battery somewhere.  As for the phone...it's not easy...I'm just learning.  Not the phone's fault.
4212814
Picture says it has 2000 mAh.. Description says it has 1500 mAh.. I received 1800 mAh and they did not last long! Do they drain while they are off?
4300062
Very, VERY well built.  Itsa tank.  Great idea with thedisplay letting you know exactly what's going on (should it prove accurate)

However,I doubt its 26800mAh ... recharging one phone (Lumia 950XL) with a 3340mAh battery from 15% (so it's actually charging 3117mAh)  resulted in using 25% of theunit's charge.  Doesn't add up.  And, charging never got above 41% / hour, while the stock charger with that phone (5V / 3A) peaks at 78% per hour.

In the end, its not 26800mAh and its sorta slow.  Avoid.

--UPDATE 2-27-17--
Adding another star for excellent, friendly support from Zendure.  Still, battery is nowhere near advertised capacity even aftertwo replacements.
223746
Received a 4000mAh instead of 4200. Though a small difference, it mattered to me with respect to what was ordered and paid for and also amount of power available.
2088815
Good afternoon, I agree with the notebook, but the downside is that I have the power charger to give the corresponding energy.
Maybe it was not includa buying. Please I need an explanation.
Thank you so much
My address is 3143 Mercedes where I live
Argentina CP 1417
(I leave my address in case they have to send it to me)
1114700
Got this and decided to test the 1200mAh Claims.
Basically... nope.  The Two Batteries tested 943 and 941.  Just for the heck of it I tested the stock battery and got 1098mAh.  Close enough to the 1080mAh they are labeled as.
(link to the plot)
http://www.amazon.com/gp/customer-media/permalink/mo2D5YV3D3Z9MWU/B00AAIPT76/ref=cm_ciu_images_pl_link
3688452
DO NOT BUY! Extremely overstated mAh rating not even close.

I didn't expect 5000mAh as that isn't possible w/18650batteries, but I did expectsomewhere around  2400mAh. These batteries only averaged 1000mAh to 1250mAh through a charge / discharge / charge cycle.  Only recording the last discharge and last charge.
1501561
i did a battery testing and it was rated at 1623mAh not 1500 i got more than i paid for. thank you GTMax/EZOPower you made my phone better.
2639698
I agree with another poster: despite a few charge cycles, it shuts off abruptly after an hour or so. Not a 4,400 mAH battery by any means
1656817
It arrived quickly, and the price is nice, but at least the one they sent me is only 2000mAH. I suppose I can't complain a lot since they never claimed it's 3000mAH. Caveat emptor.
191954
I have only used this a couple times but am very pleased so far! I was happy to find out it was the same  mAh spec as my original battery. I would purchase from.them again.
776191
Fast shipping and am so happy to have found an affordable 2300 mAh replacement for my battery.  Of course, I did my research and know that 2300 mAh is not the standard thin battery ;)