"Satisfied" iPhone 3GS owners
Of 200 iPhone 3GS users polled in August, 2009, 99 percent termed themselves "satisfied," with 82 percent saying they were "very satisfied."
Now that we've thrown 'em off the trail, use the form below to get in touch with the people at Engadget. Please fill in all of the required fields because they're required.
The following page has been on Apple's website for months. They updated it to include the links to the iPhone, but otherwise, this information has been available for a long time.
http://www.apple.com/batteries/
http://www.apple.com/batteries/iphone.html
"Charge Cycles
A properly maintained iPhone battery is designed to retain up to 80% of its original capacity at 400 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs."