Powerology 27000mAh Smart Display Power Bank - Featuring a massive 27000mAh battery capacity, it provides your laptops, tablets, and smartphones with uninterrupted power at maximum performance for days. The smart digital display allows you to precisely monitor the remaining battery percentage and real-time power input/output. Advanced fast charging technology and multiple port selections enable the safe and rapid simultaneous charging of more than one device. Its ergonomic housing structure makes this high-capacity model an indispensable companion for travel and work environments. The built-in multi-level smart protection system fully safeguards connected equipment from overvoltage, overheating, and short circuits.