Any updates to how long these batteries are lasting for you compared to the stock battery?
I was giving the Sporting Persistence extended battery a full 3 weeks before reporting back. There are still a few more days to go, but the short and a bit early answer is, meh.
The G4 seems to struggle with the calibration. That is, I plug in the phone at 40-something percent battery, and it is beeping at 100% in a half hour. Stuff like that doesn't seem right.
GSAM says I have a hair more overall battery than what I had most recently with the OEM battery, but fairly negligible, especially since the SoT is unchanged or maybe even a bit less...and the whole thing is questionable given the odd charge rate. I'm guessing my overnight charge is a full 100%, and any charge during the day that says its 100% usually isn't. This is somewhat odd to me since the bigass extended batteries seem to be recognized by the G4 just fine.
On the bright side, no overheating at all, no wonkiness in functionality overall, no spontaneous reboots, or any other problems with the function of the G4.
I feel like I saved a bit of money on an OEM level battery (in battery life).
Here it is:
[url=http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575095911&toolid=10001&campid=5337543237&customid=UUacUvbUpU4854604&mpre=http%3A%2F%2Fwww.ebay.com%2Fitm%2F231693644053%3F_trksid%3Dp2060353.m1438.l2649%26ssPageName%3DSTRK%253AMEBIDX%253AIT]4280mAh High Capacity Li ion Battery F LG G4 BL 51YF H810 H815 LS991 VS986 US991 | eBay[/URL]
IEDIT ...since I'm downloading the 13B update now, may as well just post the GSam screenshot and call it a wrap:
So, as I posted in this thread
http://forums.androidcentral.com/lg-g4/602255-my-final-word-g4-battery-life.html, my last OEM battery stats had 14 H 9 M overall, and 5 H 51 M of SoT.
Looks like I lost about a half hour of SoT to gain a bit more than an hour of overall battery life. Which, of course, I could have done with the OEM battery!