The PowerBox 300 is a high‑capacity portable power bank with around 30,000 mAh capacity — ideal for charging phones, tablets, earbuds, smartwatches, and other USB devices without needing a wall outlet. 

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Key Features

• 🔋 30,000 mAh battery capacity — can deliver several full charges to smartphones and smaller devices on a single charge. 
• ⚡ Up to ~15 W output — decent charging speed for phones and accessories (not super‑fast PD/QC standard). 
• 🔌 Multiple charge ports (USB‑C and USB‑A) — lets you charge multiple devices at once. 
• 🔄 Two‑way charging — recharge the power bank via USB‑C or Micro‑USB, and use the USB‑C port for output too. 
• 🔦 Built‑in LED torch and sometimes SOS light — handy in dark or emergency situations.