PowerCore Essential 20000 PD + PowerPort III Nano The 20,000mAh Portable Charger and Mini Charger Combo The Perfect Combo Connect the included 18W wall charger to recharge PowerCore Essential 20000 PD in less than 7 hours. Power for Days With a 20,000mAh 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. Compact and Portable PowerPort III Nano weighs just 30gabout the same as a AA battery. And thanks to the revolutionary size, it fits easily into your pocket or bag for high-speed charging with unprecedented portability. 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. Notes For PowerCore Essential 20000 PD: - USB-A to USB-C cable and Lightning cable not included. - When the trickle-charging mode is on, the last LED light will remain green, regardless of battery status.