Extended Battery

[prj]

Looking at 3 different extended batteries that I can use with the stock back cover on my GS3. Anyone have experience with either one of these?

Amazon.com: [180-Day Money Back] Gorilla Gadgets 2300mAh Battery for Samsung Galaxy S3 GT-I9300, T999 (T-Mobile), I747 (AT&T), I535 (Verizon), R530 (U.S.Cellular), L710 (Sprint) with NFC/Google Wallet: Cell Phones & Accessories

Amazon.com: [180 days warranty]ZeroLemon 2x Samsung Galaxy SIII 2300mAh Slim Battery + Free Battery Charger with USB charge port (Compatible with Samsung Galaxy S III GT-i9300, AT&T Samsung Galaxy S3 Samsung i747, Verizon Samsung Galaxy S3 Samsung i5

Amazon.com: Anker

 

[Rukbat]

A 2300mA battery isn't much of an extension over the stock 2100mA battery. Considering efficiency, you'll get about 1.05 times as long between charges. You get more variation between stock batteries. How you treat the battery will have MUCH more effect on how long a charge lasts. (Condition the battery - 3 full charges, 3 full uses until the phone tells you to charge it - and charge it at around the 50% discharge point as often as practical.)

If you're looking for a spare battery (which this would be), most people here seem to have good luck with Anker.

 

[prj]

Thanks, but I wasn't looking for charging and conditioning instructions for my stock battery.

I'm looking for feedback from users that may have used one of the 3 batteries I posted above.