Powerology Diy Cell 10000+5000mAh Power Bank - is a multifunctional combined power source with a total capacity of 15000mAh (10000mAh and 5000mAh), integrating two distinct modules into a single system. Thanks to its linked smart interface design, you can use the large or small cell separately depending on your needs, while charging different devices in parallel at maximum speed. The ergonomic housing structure and built-in smart protection system fully safeguard connected equipment from overvoltage, overheating, and short circuits.