The state of smartphone battery technology [early 2016]


Good battery life is key to any smartphone. Sure, you want a bigger display or a better camera, or even a faster fingerprint scanner (biometric security FTW), but, if there is nothing left to power the device at the end of the day then what’s the point?

Every year we get to see some of the best smartphones on the market. Ones with bigger screens, more efficient processors and great cameras. Yet it seems that battery technology remains stagnant all year round. Actually battery technology hasn’t changed much for decade.

Just a second, guys. Let me plug in my laptop. So where were we?

Do you remember last year’s Samsung Galaxy S6? One of it’s most touted features was a 2550 mAh battery. Pathetic.

So what’s going on? Why are smartphone batteries so lame? It all begins with the infamous Lithium-ion cell. 

What is a lithium-ion cell?

You’ve probably heard about the Lithium-ion cell, right? According to Professor Wikipedia, who has a PhD in everything: A lithium-ion battery (sometimes Li-ion battery or LIB) is a member of a family of rechargeable battery types in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging.

So basically a Lithium-ion battery is just a cell where lithium ions move back and forth while charging and discharging. That’s ...

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