The backplate is completely removable and interchangeable with different plastic and leather options. Removing the backplate also give you access to some of the internals of the phone such as the replaceable battery and expandable memory slots.
LG is continuing the trend of allowing you to swap out the battery in the G4. You can purchase an additional 3000mAh battery and charging cradle.
You can add external storage of up to 2TB with the included microSD slot. Well, that is, if a 2TB microSD card is ever invented. But i've been assured that we have our best men on it.
The LG G4 has Qualcomm's quick charging 2.0 built into the phone. Using your micro USB cable and a certified charger, you'll be able to refill the batteries in mere minutes.
Read the full story at Android Central