PowerBank X-power SI20A9QLX black (20000mAh, PD100W, LED, flashlight, 21700 Li-pol Cylindrical battery, 100w cable) from Sigma Mobile — a modern and powerful power bank in the Energy Independence > Power Bank category. The SI20A9QLX model combines a 20,000 mAh capacity with a maximum output power of up to 100W via USB-C (Power Delivery), a large flat LED flashlight on the front, and an informative LED display.

Overview and Key Advantages

The SI20A9QLX features an elongated rectangular body that fits comfortably in the hand and has compact dimensions — weighing only 426 grams, making it a convenient companion for travel, work, and study. With Power Delivery support, the power bank quickly charges smartphones, tablets, and even laptops. When using a PD 100W compatible charger and cable, the device itself fully charges in up to 2 hours.

Advantages of SI20A9QLX

• High Power: USB-C with Power Delivery support provides fast charging up to 100W when connecting a single device.
• Large Capacity: 20,000 mAh — enough for several full smartphone charges or for charging a laptop.
• Pass-through Charging: The power bank can simultaneously charge itself and another device without loss of efficiency.
• LED Display: Shows charge percentage, fast charging status, and low current mode.
• LED Flashlight: Large LED on the front with three modes: strong illumination, weak illumination, SOS flashing.
• Reliable Batteries: Four 21700 cylindrical Li-Polymer cells for stable operation under high loads.
• Protections: Built-in protection against overheating, overvoltage, and short circuit.

Technical Details and Compatibility

The maximum input power of the SI20A9QLX is 65W. For the fastest charging of the power bank, it is recommended to use a charger of at least 65W PD, and with a 100W PD charger — charging time is up to 2 hours. Supported charging protocols: PD 3.0, QC 3.0, AFC, FCP. Fast charging is provided only when connecting a single device: either to the USB-C port — up to 100W, or to the USB-A port — up to 22.5W.

What can be charged?

• High-power devices: smartphones (including Apple), tablets, laptops, routers.
• Low-power devices: fitness trackers, Bluetooth headphones, smartwatches, electric toothbrushes — thanks to the low current support mode.

Batteries and Durability

The SI20A9QLX model uses four 21700 cylindrical Li-Polymer cells. This ensures stable power delivery at high currents, slower wear, and a long service life — up to 1000+ charging cycles. This type of battery is also used in power tools and electric vehicles.

Housing Materials and Package Contents

The body is made of fire-resistant ABS+PC — a material with high impact resistance, heat resistance, and mechanical strength. The device comes with a USB-C—USB-C cable with a built-in E-MARK chip (100W), allowing immediate use of full power for charging a laptop or power bank. A silicone carrying strap is also included.

Usage Features

• Supports charging of laptops that work with the Power Delivery protocol via USB-C; other laptops can be charged using special USB-CDC adapters.
• Low current support mode provides safe power for headphones, fitness trackers, and smartwatches.

The SI20A9QLX — is a balanced solution for those who need a powerful, fast, and reliable power bank with additional features such as a large LED flashlight, an informative display, and a bundled 100W cable. Its 426g weight, compact size, and modern design make it convenient for everyday use and travel. Brand: Sigma Mobile. Category: Energy Independence > Power Bank.

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