If you have any batteries you would like to send to me for testing shoot me a PM and I'll give you my email address.
Many thanks to fellow XDA member Rommul for sending me his Yesoo 4300mAH battery for testing. If you see him give him a thanks for sending me one of his batteries to test and further increase this threads information pool.
Extended Battery Times
Mugen 4600mAH
Test Times: 5Hrs 58Min
Purchase Date: November 2012
Test Date: February 2013
NFC: Yes
http://www.mugen-power-batteries.co...848441-2&utm_referrer=https://www.google.com/
Anker 4400mAH
Test Times: 5Hrs 19Min
Purchase Date: July 2012
Test Date: February 2013
NFC: No
http://www.amazon.com/Anker-Extende...48183518&sr=8-1&keywords=galaxy+s3+anker+4400
Hyperion 4200mAH
Test Times: 5Hrs 10Min
Purchase Date: July 2012
Test Date: February 2013
NFC: Yes
http://www.amazon.com/Hyperion-Exte...UTF8&qid=1345682203&sr=1-4&keywords=galaxy+s3
Update
Yesoo 4300mAH
Test Times: 4Hrs 59Min
Purchase Date: Unknown(Received the Battery from fellow XDA member Rommul for testing)
Test Date: March 2013
NFC: Unkown
Seidio 3500mAH
Test Times: 4Hrs 41Min
Purchase Date: October 2012
Test Date: February 2013
NFC: Yes
Remember to pick the seller as Amazon before you buy so you can return the product if you not are satisfied.
http://www.amazon.com/gp/search/ref...+S+III&ie=UTF8&qid=1352055596&rnid=2491153011
QCell 4200mAH
Test Times: (No longer own this battery)
http://www.amazon.com/QCell-Extende...id=1348331625&sr=1-1&keywords=galaxy+s3+qcell
Stock Size Battery Times
Anker 2200mAH NEEDS A RETEST
Anker 2200mAH Screen Times 3Hrs 57Min NEEDS A RETEST
Fits in original battery cover
Price $11.99+Shipping on Amazon
Hyperion 2200mAH
http://www.amazon.com/Hyperion-Comp...1349564017&sr=1-3&keywords=galaxy+s3+hyperion
Hyperion 2200mAH Screen Times 3Hrs 21Min NFC Capable (pictures Included)
Fits in original battery cover
Price $11.99+Shipping on Amazon +90 Day warranty
Onite 2300mAH
http://www.amazon.com/Onite-2300mAh...Samsung+Galaxy+SIII+S3+i9300+Extended+Battery
Onite 2300mAH Screen Times 3Hrs 10Min NFC not tested yet
Fits in original battery cover
Price $7.99+Shipping on Amazon
QCell 2100mAH
http://www.amazon.com/UNIVERSAL-COM...id=1350237636&sr=1-2&keywords=galaxy+s3+qcell
QCell 2100mAH Screen Times 3Hrs 7Min NFC Capable
Fits in original battery cover
Price $25.00+Shipping on Amazon for 2X 2100mAH batteries+Charger
OEM 2100mAH
http://www.amazon.com/Samsung-EB-L1...sr=8-1&keywords=samsung+galaxy+s3+oem+battery
OEM 2100 mAH Screen Times 3 Hrs 7Min NFC Capable (picture included)
Fits in original battery cover
OEM Charge time from 0%-100% 3Hrs 12Min
Price $15.08+Shipping on Amazon
Battery covers
Seidio battery covers fit the Hyperion 4200, Anker 4400, QCell 4200
$14.99+Shipping for the Battery cover from Seidio.
https://www.seidioonline.com/ProductDetails.asp?ProductCode=BVY35SSGS3-BK
CASES For Larger Extended batteries
Draco Aluminium Bumpers fit the Seidio battery covers
http://www.amazon.com/Draco-Aluminu...UTF8&qid=1352064848&sr=8-12&keywords=draco+s3
Seidio Active Extended Case (Best protection for extended batteries you will need the Seidio battery cover)
$34.95+Shipping
Might cost you a pretty penny.
http://www.seidioonline.com/samsung-galaxy-s-3-active-extended-kickstand-black-p/csk3ssgs3xk-bk.htm
Seidio Hard Case for extended batteries(Will only fit with Seidio battery cover)
$29.95+Shipping
https://www.seidioonline.com/ProductDetails.asp?ProductCode=CSR5SSGS3-BK
Seidio Case with Holster
https://www.seidioonline.com/ProductDetails.asp?ProductCode=BD2-HR5SSGS3-BK
Hyperion honeycomb case and the Qcell case fit Hyperion, Anker, QCell extended battery covers but do not Fit Seidio Battery Covers.
QCell
Better protection than the Hyperion but only 2 color options. But, full coverage screen protectors will get lift with this case. It'll provide better protection from drops than the Hyperion.
http://www.amazon.com/gp/product/B006V3TUP6/ref=oh_details_o02_s00_i01
Hyperion Honey Comb
Has the most color options but the volume and power buttons are very hard to push. I wouldn't recommend it for protection either, since its very very very thin.
http://www.amazon.com/Hyperion-Exte...mpatible/dp/B008MMZUZS/ref=pd_bxgy_cps_text_c
Mods for Rugged Extended Battery Cases
This is for people who aren't afraid of cutting up their $30+ cases to fit extended batteries.
Otterbox Defender Series Mod http://xdaforums.com/showthread.php?t=1822189&highlight=mod
Trident Kraken A.M.S Mod http://xdaforums.com/showthread.php?t=1826376&highlight=hyperion
More options for batteries and cases I have not yet reviewed
http://xdaforums.com/showthread.php?t=1956293
Many thanks to fellow XDA member Rommul for sending me his Yesoo 4300mAH battery for testing. If you see him give him a thanks for sending me one of his batteries to test and further increase this threads information pool.
Extended Battery Times
Mugen 4600mAH
Test Times: 5Hrs 58Min
Purchase Date: November 2012
Test Date: February 2013
NFC: Yes
http://www.mugen-power-batteries.co...848441-2&utm_referrer=https://www.google.com/
Anker 4400mAH
Test Times: 5Hrs 19Min
Purchase Date: July 2012
Test Date: February 2013
NFC: No
http://www.amazon.com/Anker-Extende...48183518&sr=8-1&keywords=galaxy+s3+anker+4400
Hyperion 4200mAH
Test Times: 5Hrs 10Min
Purchase Date: July 2012
Test Date: February 2013
NFC: Yes
http://www.amazon.com/Hyperion-Exte...UTF8&qid=1345682203&sr=1-4&keywords=galaxy+s3
Update
Yesoo 4300mAH
Test Times: 4Hrs 59Min
Purchase Date: Unknown(Received the Battery from fellow XDA member Rommul for testing)
Test Date: March 2013
NFC: Unkown
Seidio 3500mAH
Test Times: 4Hrs 41Min
Purchase Date: October 2012
Test Date: February 2013
NFC: Yes
Remember to pick the seller as Amazon before you buy so you can return the product if you not are satisfied.
http://www.amazon.com/gp/search/ref...+S+III&ie=UTF8&qid=1352055596&rnid=2491153011
QCell 4200mAH
Test Times: (No longer own this battery)
http://www.amazon.com/QCell-Extende...id=1348331625&sr=1-1&keywords=galaxy+s3+qcell
Stock Size Battery Times
Anker 2200mAH NEEDS A RETEST
Anker 2200mAH Screen Times 3Hrs 57Min NEEDS A RETEST
Fits in original battery cover
Price $11.99+Shipping on Amazon
Hyperion 2200mAH
http://www.amazon.com/Hyperion-Comp...1349564017&sr=1-3&keywords=galaxy+s3+hyperion
Hyperion 2200mAH Screen Times 3Hrs 21Min NFC Capable (pictures Included)
Fits in original battery cover
Price $11.99+Shipping on Amazon +90 Day warranty
Onite 2300mAH
http://www.amazon.com/Onite-2300mAh...Samsung+Galaxy+SIII+S3+i9300+Extended+Battery
Onite 2300mAH Screen Times 3Hrs 10Min NFC not tested yet
Fits in original battery cover
Price $7.99+Shipping on Amazon
QCell 2100mAH
http://www.amazon.com/UNIVERSAL-COM...id=1350237636&sr=1-2&keywords=galaxy+s3+qcell
QCell 2100mAH Screen Times 3Hrs 7Min NFC Capable
Fits in original battery cover
Price $25.00+Shipping on Amazon for 2X 2100mAH batteries+Charger
OEM 2100mAH
http://www.amazon.com/Samsung-EB-L1...sr=8-1&keywords=samsung+galaxy+s3+oem+battery
OEM 2100 mAH Screen Times 3 Hrs 7Min NFC Capable (picture included)
Fits in original battery cover
OEM Charge time from 0%-100% 3Hrs 12Min
Price $15.08+Shipping on Amazon
Battery covers
Seidio battery covers fit the Hyperion 4200, Anker 4400, QCell 4200
$14.99+Shipping for the Battery cover from Seidio.
https://www.seidioonline.com/ProductDetails.asp?ProductCode=BVY35SSGS3-BK
CASES For Larger Extended batteries
Draco Aluminium Bumpers fit the Seidio battery covers
http://www.amazon.com/Draco-Aluminu...UTF8&qid=1352064848&sr=8-12&keywords=draco+s3
Seidio Active Extended Case (Best protection for extended batteries you will need the Seidio battery cover)
$34.95+Shipping
Might cost you a pretty penny.
http://www.seidioonline.com/samsung-galaxy-s-3-active-extended-kickstand-black-p/csk3ssgs3xk-bk.htm
Seidio Hard Case for extended batteries(Will only fit with Seidio battery cover)
$29.95+Shipping
https://www.seidioonline.com/ProductDetails.asp?ProductCode=CSR5SSGS3-BK
Seidio Case with Holster
https://www.seidioonline.com/ProductDetails.asp?ProductCode=BD2-HR5SSGS3-BK
Hyperion honeycomb case and the Qcell case fit Hyperion, Anker, QCell extended battery covers but do not Fit Seidio Battery Covers.
QCell
Better protection than the Hyperion but only 2 color options. But, full coverage screen protectors will get lift with this case. It'll provide better protection from drops than the Hyperion.
http://www.amazon.com/gp/product/B006V3TUP6/ref=oh_details_o02_s00_i01
Hyperion Honey Comb
Has the most color options but the volume and power buttons are very hard to push. I wouldn't recommend it for protection either, since its very very very thin.
http://www.amazon.com/Hyperion-Exte...mpatible/dp/B008MMZUZS/ref=pd_bxgy_cps_text_c
Mods for Rugged Extended Battery Cases
This is for people who aren't afraid of cutting up their $30+ cases to fit extended batteries.
Otterbox Defender Series Mod http://xdaforums.com/showthread.php?t=1822189&highlight=mod
Trident Kraken A.M.S Mod http://xdaforums.com/showthread.php?t=1826376&highlight=hyperion
More options for batteries and cases I have not yet reviewed
http://xdaforums.com/showthread.php?t=1956293
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