The BK Smart S15 20000 mAh Power Bank is a high‑capacity portable charger designed to keep your smartphones, tablets, Bluetooth accessories, and other USB‑powered devices charged while you’re on the go
Specifications
USB‑C Input: ~5 V/2 A or higher for faster recharge.
• Micro‑USB Input: Some models include this as an alternative input.
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📱 Output (Charging Your Devices)
• USB‑C Output: Likely supports ~5 V/3 A (PD fast charging) for phones/tablets.
• USB‑A Output: ~5 V/2–3 A (standard USB) for other devices.
• Total Output: ~18 – 22.5 W combined when using one port (common for this capacity class).
Most 20,000 mAh power banks in this class can charge two devices at once — one via USB‑C and one via USB‑A — although the fast‑charging speed may drop when both are used together.
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🛡️ Safety & Protection
Typical built‑in protections include:
• Over‑charging protection
• Over‑current protection
• Short‑circuit protection
• Over‑voltage and Over‑heat protection
These help protect both the power bank and connected devices (common on quality power banks).
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📊 Design & Indicators
• LED Battery Level Indicators — show remaining charge status.
• Durable ABS or Plastic Housing — lightweight but sturdy casing.
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📦 Typical Accessories Included
• USB‑C charging cable (often included).
