PowerBank X-power SI20A4QL black (20000mAh) — a compact and powerful external battery from the Sigma Mobile brand, model SI20A4QL. This basic model of the updated product line is designed for daily use, travel, and outdoor activities, providing backup power for smartphones, tablets, and portable gadgets.

Brief Overview

The PowerBank has a stated capacity of 20,000 mAh*, a total maximum output power of up to 22.5 W (Quick Charge), and supports the Power Delivery (PD 20W) protocol, making the device compatible with modern fast charging standards. In the title and description, USB Type-C and USB Type-A connectors are further referred to as USB-C and USB-A respectively, according to established USB-IF terminology.

Ports and Connectivity

• Three connectors: one USB-C (for charging the power bank and for power output to devices) and two USB-A ports (only for charging devices), allowing multiple gadgets to be connected simultaneously.
• Support for Quick Charge and Power Delivery for fast charging compatible devices.
• LED indicator showing charge status and charging process.

Construction and Materials

• Fire-resistant ABS+PC casing — durable, impact-resistant, and heat-resistant material, suitable for recycling.
• Compact dimensions: 146×68×28 mm, weight approximately 421 g — convenient for carrying in a bag or backpack.
• Uses two Li-Polymer battery cells with a flat casing, providing a thinner form factor and reduced device weight.

Functions and Safety

• Low-current mode — safe power for headphones, fitness trackers, and smartwatches.
• Pass-through charging — the power bank can charge itself and power a connected device simultaneously without loss of efficiency.
• Built-in protection system against overload, overheating, and short circuit ensures safe operation.

Package Contents

• X-power SI20A4QL Power Bank in black.
• Included USB-A↔USB-C cable, 30 cm long, designed to transmit up to 20W, ready for use immediately after purchase.

The SI20A4QL model is ideal for home, work, and travel: thanks to the combination of large capacity, support for modern fast charging protocols, safety features, and compact design, this power bank will become a reliable assistant in everyday life. The product belongs to the category: Energy Independence > Power Bank from manufacturer Sigma Mobile.

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