It can be plugged into a hand-held device (such as a mobile phone, music player or portable games console) to power or recharge it, and has sufficient capacity to provide around 30 hours of talk-time on a mobile phone, or 60~80 hours of playback time for an iPod music player.
去掉括号内的举例补充说明，以and为切入点，得到It can be plugged into a hand held device to power or recharge it, and has sufficient capacity to provide…, and并列了两个谓语，前一谓语使用了被动语态can be plugged，后一谓语是has，后面的宾语补足语to provide后的宾语由or并列，分别为around 30 hours of talk-time on a mobile phone和60~80 hours of playback time for an iPod music player。
portable 便携式，可搬动的---->portable computer笔记本电脑
have sufficient capacity to do sth. 有足够的能力做….
Questions are increasingly being asked by the councils about how they can be sure that misconduct is not taking place on the grants they provide.