One of the key draws of some of Asus's other Transformer hybrids was that they offered secondary batteries in their keyboards that could boost stamina massively, making the hours of battery life available reach double figures. (trustedreviews.com)
The ever - increasing market for portable electronic devices such as laptops, cell phones and MP3 players has resulted in an equally heavy demand for secondary batteries — more commonly known as rechargeable batteries — Lithium - ion (Li - ion) being among the most popular. (sciencedaily.com)
Yet, a couple of days ago I read about lithium air batteries which are developed as secondary batteries, which means that the can be recharged, which would be great for electric mobility. (zerocarbonista.com)