External energy bank – Puridea X02 power bank. Allows you to quickly charge up to two mobile devices at the same time. Equipped with an LCD display. Made of high quality material – fireproof ABS, guarantees long-term and safe use. Dual USB port allows you to charge up to two portable devices at the same time. Huge capacity (20,000 mAh) allows devices to be charged multiple times. Resistant to temperature and drops, the product has a long service life. Multilevel security system e.g. against overcharging, affects safe use. Compact size makes it easy to move the product and provides a firm grip on the device. Specification: Battery: Lithium polymer Capacity: 20,000 mAh Output: Single loading: DC 5V – 2.4A, Double loading: DC 5V – 3.0A Input: DC 5V – 2.1A (Micro USB + Type C) NOTE! Nominal capacity expressed in mAh (milliampere hours) means the sum of all cells that were used in the power bank. The cells used have a voltage of 3.6 – 3.7V, while the standard USB port – 5V, so voltage conversion is necessary, which in turn translates into real capacity. After conversion, it is usually around 65-67% of the original value. This means that for a power bank with a capacity of 12,000 mAh, in fact about 8,000 mAh is available.