Portable energy bank - REMAX Johnson RPP-153. Allows you to charge mobile devices outside the home. Compatible with all mobile phones, iPods, MP3 players and digital cameras. Made of high quality materials - ABS, guarantees long-term and safe use. Built-in security system provides protection against overvoltage and overcharge, making the product more durable and reliable compared to other power banks. High capacity (10,000 mAh) allows you to charge devices multiple times. LED indicator indicates the current capacity. Specification: Capacity: 10,000 mah Battery: Polymer Input: DC5V-2A Output: DC5V-2A Material: ABS 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.