Model Number: A1287 Anker 525 Power Bank (PowerCore 20K) The High-Speed, High Cell Capacity Portable Charger High-Speed Charging With a 20W USB-C port that packs a real punch, you can charge an iPhone 12, a Galaxy S20, or a PIxel 4 in less than 2 hours. Power for Days With a 20,000mAh cell capacity, you can easily keep all of your mobile devices charged up for days on end. You’ll wonder how you ever spent so much time plugged into the wall. Premium Design With a sleek matte exterior and cool-blue LED light-wheel to display battery level, PowerCore Essential 20000 PD is premium both inside and out. Trickle-Charging Mode Trickle charging is designed to provide optimized charging to low-power devices such as earphones, Bluetooth speakers, and other accessories. To activate, press the power button twice or press and hold for 2 seconds until the LED indicator turns green. Rapid Recharge Pair up with an 18W USB-C Power Delivery charger (not included) to fully recharge PowerCore’s internal battery in just 5 hours. Recharging with a 10W or less charger will take approximately 20 hours. Note: 20,000 mAh is the total nominal rated capacity of the internal battery cells.