It's no secret by now that the third-generation iPad's battery grew by 70 percent to accommodate the device's new retina display. But despite that capacity, the new iPad's battery life has remained just about the same as that of the iPad 2. This would suggest that battery life is not a significant concern, right? If you're anything like me, that assumption is still wrong. My own personal mission when using mobile devices is to conserve, covet, and hoard my battery life—almost to the point of obsession—which is why I'm slowly becoming known among my friends, family, and coworkers as a battery miser.