To run a state-of-the-art cell phone, a fuel cell would need to generate about a quarter of a watt while the phone is h-i standby mode, and a full watt when making calls.

• 要想启动一部体现技术发展水平的手机，燃料电池必须在手机呈待机状态时产生约1/4瓦特的电量，而在通话时必须产生一瓦特的电量。