Can someone recommend an extended battery for the LG G3?

After using my new 4500mAh battery I bought on eBay for about a week I have to say I am not all that impressed. So far battery life seems to be about the same as it is with the stock battery. Now to be fair I was on vacation all of that week so my battery use was different than my normal usage in some ways. I will give it a few days now that I am home and using it in my standard ways and see if there is improvement.
 
Hi,
I have used TQTHL and "Deep Stretch" extended batteries for my earlier lg g3 d855, and now lg g4 H818N.
TQTHL was/is 7700 mah and works well.
Deep Stretch (available only in the U.S.) has ~ 9000 mah, and fits in the same space/cover as TQTHL. However, in lg g3, I have noticed a 3-5 degree increase in temperature, maybe because i use the vs985/vs986 version. But otherwise superb performance with deep stretch. Now I only use deep stretch, which can guarantee me 1 full day running with heavy use.
I also stick a leather (kld) cover on the back for aesthetics,cushion, and cutting down on radiation.
 
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Old thread, but some good info here. I got a used GS3 last month and the battery was over a year old. I was getting maybe 2.5 hours screen time and not making it till the end of the day. I was about to get an anker battery but decided to get the TQTHL 4500mah instead. I know it's not actually a 4500mah battery but I think it must be somewhere between stock 3000 and 4500.

I have several reasons for thinking this. First my battery life and screen time doubled and is basically identical to the Droid Turbo I was using for a few months with a 3900mah battery. Second the TQTHL battery feels heavier and thicker than stock even though the battery cover still fits fine. Overall I'm quite pleased with the battery and phone.