Since last July's WPC (Wireless Power Consortium) announcement of its Qi (pronounced "chee") standard for wireless charging, hardware companies have been releasing both charging stations and device adapters. Last month, for example, Energizer (www.energizer.com) introduced both adapters and charging mats for mobile phones. The mats look like the protective case that many users purchase for their phones; hence, they are a perhaps-unnecessary expense. An iPhone-adapter sleeve and the charging mat together sell for approximately $120.
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