Power meters are an integral part of many smartphones, and there’s little doubt they’ll become even more ubiquitous in the future.
In fact, if you want to know how much power your phone has left in the battery, you can find it by reading the meter’s output on the screen.
But how does one actually use one?
Power meters have become increasingly popular for several reasons.
They’re simple to use, but are relatively accurate.
They’ve also become very easy to hack.
Here’s how to make the most of the devices, and the most powerful power meters on the market.