The PowerBox 400 Vision (model OPB‑7400Q) is a high‑capacity portable power bank designed to keep your devices charged throughout the day — ideal for travel, emergencies, or heavy daily use. 

📌 Key Features 

• 🔋 40,000 mAh capacity (≈148 Wh) — provides multiple full charges for smartphones, tablets, and some laptops.
• ⚡ 22.5 W fast charging — supports quicker charging for compatible devices.
• 🔌 Multiple output ports (USB‑A and USB‑C) — lets you charge up to 4 devices at once.
• 📊 LED digital display — shows remaining battery level clearly at a glance.
• 🛡️ Smart safety protections — multi‑layer protection against overcharge, over‑heat, and short circuits.
• 🚀 Quick charge tech (ANI Fast) — can charge your phone up to ~60 % in ~30 min on supported devices.
• 🔦 Some versions include an LED torch for added utility.
• 🔋 Polymer lithium battery type for stable performance.