With cellphone batteries typically lasting about a day because battery technology hasn't kept pace with the ever-increasing power of many feature-rich phones, reaching for a cumbersome charger is a necessary chore. A new standard for wireless charging that's becoming increasingly prevalent in furniture, cars, and some airport lounges and hotels wants to change that. The concept behind the chargers is straightforward - a base plugged into an electrical outlet emits a constantly-varying magnetic field, which causes a receiver in the device to vibrate, powering the battery and allowing it to charge. So far, more than 200 companies - including Microsoft, Samsung, LG Electronics, Verizon, Sanyo, and Phillips - have agreed to use a standard for the chargers called Qi. The market for wireless chargers has been growing steadily, with companies shipping 55 million devices that charged wirelessly in 2014, which grew to an expected 160 million this year, or $1.7 billion in sales. Since the technology is relatively new, there are some catches - Apple's iPhone doesn't natively support wireless charging, for example. Carmakers are taking notice of the technology, with Toyota offering wireless charging in its popular Camry and Toyota models and in Lexus cars, while BMW and Audi have begun offering it in some vehicles. Wireless charging continues to be adopted for use with more devices at home, at work, and in the car.