Qi (pronounced ‘chee’) is the charging technology offered by most phones. Built into the phone itself, Qi wireless chargers are more energy-efficient than standard charging methods. The Qi technology is also smaller, making for more compact chargers. While otherwise a perfectly simple and effective way of wirelessly charging your devices, Qi charging has the minor downside of having to be placed a specific way on a charging station. Any misplacement or minor movement will cancel out the wireless charging.