The Astrum PB255 is a high‑capacity 20000mAh fast‑charging power bank built for users who need reliable, multi‑device power on the go. Featuring PD20W USB‑C fast charging and dual USB‑A high‑speed outputs, it delivers rapid, efficient charging for smartphones, tablets, earbuds, and other USB‑powered devices. Its multi‑input design (Micro USB + USB‑C) ensures convenient recharging with any cable you already own, while the LED battery indicator keeps you informed of remaining power levels. Equipped with Smart IC protection, the PB255 automatically adjusts output to match each device’s requirements, preventing over‑voltage, overheating, over‑current, and short‑circuit damage. Despite its large capacity, the PB255 remains portable, durable, and travel‑friendly, making it the ideal backup power solution for commuting, business trips, and outdoor use. ✅ Key Specifications 20000mAh high‑capacity polymer battery PD20W USB‑C fast charging Dual USB‑A high‑speed outputs Multi‑input: Micro USB + USB‑C LED battery level indicator Smart IC protection (OVP/OCP/OTP/SCP) Supports Apple & Android fast charging Durable, portable design ✅ Technical Details Feature Details SKU A91625‑B Model PB255 Battery Capacity 20000mAh (3.7V / 74Wh) USB‑C Input 5V 2.4A / 9V 2A / 12V 1.5A Micro USB Input 5V 2A / 9V 2A / 12V 1.5A USB‑A Outputs (x2) 4.5V 5A / 5V 4.5A / 5V 3A / 9V 2A / 12V 1.5A USB‑C Output 4.5V 5A / 5V 4.5A / 5V 3A / 9V 2.22A / 12V 1.67A Power Delivery 22.5W max Dimensions 140.3 × 68 × 28 mm Weight Approx. 413 g Protection Over‑voltage, short‑circuit, over‑charging Indicator LED battery display Warranty 12 Months