Amazon working on Kindle that will last for more than 2 years! That's a long time you know

Reports emerged last week that Amazon is working on Kindle e-reader with a two-year battery life. 

Engineers at Amazon's Lab126 said they hoped to produce a battery that could last on a single charge for almost 24 months - even if the device is being used. 

The current battery life of a Kindle ranges from between six weeks and two months, depending on usage.

Given the timeframe of the patent filing, though, it is unlikely to be seen in the iPhone 6S expected to launch next week.  

'Such fuel cells and associated fuels can potentially achieve high energy densities, which can potentially enable continued operation of portable electronic devices for days or even weeks without refueling,' continued Apple in the patent.

Fuel cells produce electricity without combustion.

They typically combine hydrogen with oxygen to produce electrical energy and only emits heat and water, making it safer for the environment.  

By the nature of its electrochemical reaction, a fuel cell can be more than twice as efficient as other forms of battery.