iPhone Gets Removable Battery, Providing New Life to the Device

Apple's (NASDAQ: AAPL) iPhone is a spectacular item, but its all-inclusive design prevents users from moving and replacing the battery.

If, however, Third Rail's slide-on battery actually works, we might finally have a solution to the problem.

Business Insider reports (via 9to5 Mac) that the battery doubles as a case for the iPhone 4. While it does not allow users to open the iPhone and physically remove the existing battery, the Third Rail battery can snap on the back, providing additional energy to the built-in battery.

Thus far, the only possible drawback is the price: at $89.99, this thing is far from cheap.