12 Way Function: Support output for external device and input for the inner 18650 batteries, multi usages make the battery charger case a powerful tool. 2Large Power Amount: Large capacity, can load 12x18650 batteries (not included), that the DIY power bank can have a large amount of power. 3Display Screen: LCD screen can display battery voltage current value, battery remaining power, clear about the present state of your portable charger. 4Plug and Play: Power output adopts USB port, plug in a data cable to achieve fast device charging, able to use at any time, no more worries for out of power. 5Wide Range: Wide application, suitable for IOS phone, for Huawei, for Xiaomi, for SONY and other mobile phone to add power, suitable for daily use.