Q-A134 Lithium Polymer Power Bank 10000mAh Built-in Two cables (micro USB, lightning and type-c). Charge 3 devices at the same time. Intelligent voltage recognition chip automatically detects voltage. Built-in battery protection IC to prevent over-charging, over-discharging and short circuit. Do not leave the power bank outside of room temperature for a long time, especially inside the car or any place that has the possibility of exposing to heat.