Stay powered longer with the PowerBox 400, a high‑capacity, dual‑direction charging power bank designed for heavy users, travelers, and anyone who needs reliable power on the go. With powerful 22.5 W output and fast two‑way charging, this bank keeps your devices ready — and recharges itself quickly too.

Key Features:

• ? Massive 40,000 mAh Capacity
  Delivers multiple full charges for phones, tablets, and other USB devices—perfect for trips or extended use.

• ⚡ 22.5 W Fast Two‑Way Charging
  Supports rapid power delivery both to your devices and when recharging the power bank itself.

• ? Multiple Output Ports
  Charge several devices simultaneously with USB‑A and USB‑C ports.

• ? Efficient & Stable Power Delivery
  High‑speed charging keeps your devices powered quickly and safely.

• ?️ Advanced Safety Protection
  Built‑in safeguards against overcharging, overheating, short circuits, and overcurrent.

• ? Travel‑Ready & Durable Build
  Compact but rugged design makes it ideal for travel, daily use, and emergency backup.

• ? LED Battery Indicator
  Easily check remaining power with clear LED charge level display.