Fast charging, charging on the go: The external battery provides power to smartphones, tablets, Bluetooth speakers, and other mobile devices—whether in the office, on a plane, or at the beach. The power pack delivers an energy boost while you're on the move. Fast charging technologies like Power Delivery and Qualcomm Quick Charge 3.0 ensure extremely quick charging, faster than with conventional chargers. The optimized charging process protects the battery and extends the lifespan of your phone, tablet, and more. Certified cells guarantee the highest quality and safe charging: overcharge, overvoltage, overheating, and short-circuit protection. Small and lightweight: The mobile charger fits in any pocket and carry-on luggage. Maximum compatibility for all phones, tablets, and other devices, such as smartwatches, digital cameras, or Bluetooth headphones. A single charge of the powerful battery pack is enough to use the Samsung Galaxy S21+ for an additional 85 hours. The power pack is fully charged via the USB-C port in 6.5 hours. An integrated LED display shows exactly from 1 to 100 percent how much power is still available. Input: USB-C. 3 outputs: 2x USB-C, 1x USB-A.