With the iPhone, there is no such luck. All you can do is pray to the battery gods that your rechargeable unit will get you through the day without draining entirely.
The European Union, not singling out Apple, but rather focusing on the issue of recycling, is set to change the laws regarding the accessibility of rechargeable batteries.
According to Apple Insider, "the 'New Batteries Directive' now being drafted ... goes even further to state that electrical equipment must be designed to allow that batteries be 'readily removed' for replacement or removal at the end of product's life."
The goal of the directive is so that the batteries of phones and other devices that have reached the end of their useful lives can be pulled out and recycled rather than tossed into a landfill. The law is not meant to vex Apple and force it to make changes or adaptations to its products.
But that could be the net result if the legislation is passed.
If it does, end users could benefit.