Disassembled: iPhone 4S Versus iPhone 4 | Cult of Mac
iPhone 4/4s - Battery Replacement – GIGA Fixxoo
GENUINE Mophie Juice Pack Air Battery Case for Apple iPhone 4 S 4S White 1500mAh | eBay
iPhone 4/4 CDMA | iPhone 4S Rear Back Cover Battery Door Glass Housing Color | eBay
Looking inside an iPhone 4/4S battery | Rip It Apart - Jason's electronics blog-thingy
PhoneSuit® iPhone 4 & iPhone 4S Battery Case
Is the iPhone 4S's battery actually better than the iPhone 4's despite having less standby time? - Quora
Amazon.com: uNu DX Lite iPhone 4S Battery Case / iPhone 4 Battery Case - Black / Crystal Black (MFI Certified, Stylish Bumper Style Case with 1500mAh Built-in Battery Fits All models of
Complete Replacement Battery Kit for iPhone 4S + Extra Accessories – Cell Phone DIY
SOLVED: Differences between 4 and 4s batteries - iPhone 4S - iFixit
Looking inside an iPhone 4/4S battery | Rip It Apart - Jason's electronics blog-thingy
Key Differences Between the iPhone 4S and 'iPhone 5' Battery? [Photos] - iClarified
iPhone 4 vs. iPhone 4S Specs Showdown - Fight! [Comparison Chart] | Cult of Mac