3500mah battery how to run the 6.8" FHD LCD . i use samsung A7 is the 615 processor as well. but 2600mah battery only can last me around 3-4pm since 8am. this is the very bad battery life device. as normal , Lenovo always dont have 1 device with proper design. 90mm width , 16MP+8MP , dual flash , 5500mah battery , 3GB ram , 32GB rom , memory card , FHD 6.5",dual speaker.