Battery capacity
20000 mA*h
Input interfaces
USB-C
Output interfaces
1x USB-C, 2x USB-A
Charge level indicator:
Digital indicator
Type of batteries
Li-Pol
View all specifications
Where to buy

SI20A4QL Power Bank – A Reliable and Efficient Choice

SI20A4QL is the base model in the updated lineup of power banks from the well-known Ukrainian brand Sigma mobile. This 20,000 mAh power bank, with a maximum output of up to 22.5W, provides stable charging for smartphones, tablets, and other gadgets.

In product descriptions (for easier readability), the USB Type-C port is referred to as USB-C, and the USB Type-A port as USB-A, following the standard international terminology set by the USB Implementers Forum (USB-IF)—an organization dedicated to promoting and supporting USB standards.

Key Features:

  • Three Ports: USB-C (for charging both the power bank and other devices) and two USB-A ports (for charging devices only), enabling multiple connections at once.
  • Compact Design & Lightweight Body: Weighing just 421 g, this power bank is portable, easy to carry, and perfect for daily use.
  • Fast Charging Support: Compatible with Power Delivery and Quick Charge. If your device supports fast charging protocols, this Sigma mobile power bank will charge it twice as fast, keeping you powered up and ready.
  • Two Li-Polymer Battery Cells: Slimmer design reduces overall size and weight for improved portability.
  • Low Current Mode: Safe charging for wireless earbuds, fitness trackers, and smartwatches.
  • Pass-through Charging: Simultaneous charging of both the power bank and other devices without efficiency loss.
  • Durable & Fire-Resistant ABS+PC Housing: High impact resistance, heat resistance, and mechanical strength. Made from non-toxic, recyclable, eco-friendly materials.
  • Compact Dimensions: 146×68×28 mm, making it easy to transport in a bag or backpack.
  • USB-A to USB-C Cable Included (30 cm): Ready for immediate use upon purchase.
  • Advanced Charging Protocols: Ensures stable and efficient power delivery, with built-in safety systems to protect against overload, overheating, and short circuits.

Perfect for Any Occasion

The SI20A4QL power bank is ideal for home, work, travel, and outdoor activities. Designed for modern lifestyles, it helps you stay connected and fully charged. With its high performance, sleek design, and multifunctionality, this power bank seamlessly fits into everyday routines.

 

Battery capacity
20000 mA*h 3.7V / 74 W*h
Nominal capacity
12000 mA*h
Input interfaces
1x USB-C
Output interfaces
1x USB-C
2x USB-A
Input voltage
USB-C input:
5V/3A, 9V/2A (18W Max)
Output voltage
USB-C output:
5V/3A, 9V/2.22A, 12V/1.67A (20W Max)
USB-A output:
5V/3A, 9V/2A, 10V/2.25A, 12V/1.5A (22.5W Max)
Total output (more than 1 connection): 15W
Charging protocol support:
USB-C input
PD2.0/PD3.0/QC2.0/QC3.0/AFC/FCP
USB-C output
PD2.0/PD3.0/QC2.0/QC3.0/AFC/FCP
USB-A 1/2 output
QC2.0/QC3.0/AFC/FCP/SCP/VOOC
Charge indication
Charge level (%)
Fast charging status
Type of batteries
Li-Pol (lithium polymer), 2 pcs
Compatibility
- mobile phones
- smartphones (including Apple Iphone)
- routers
- smart watches
- headphones
and other devices
Additionally
Automatic shutdown;
Protection against:
- from excess current;
- from excess power;
- from excess voltage;
- from short circuit;
- from overheating;
- from excessive charge;
- from excessive discharge.
Size
148*68*28
Weight
421 g
Color
black
Material
Fireproof ABS+PC
Complete set
Power Bank SI20A4QL
USB-A-->USB-C Cable 30 cm
User Manual
Warranty Card
Guarantee
12 months
Note
Sigma mobile reserves the right to change the technical specifications of the device, the package and the appearance of the product without prior notice

* when connecting more than one device, the charging speed decreases.
Instruction
0.52MB

Sigma mobile company guarantees a high quality and faultless functioning of their devices upon conditions of careful usage and considerations of exploitation rules.

After the expiration of device’s service term, we advise you to contact the Authorized Service Center for preventive maintenance and receiving recommendations for the further exploitation of device. In order to prevent possible misunderstandings, it is preferable to keep the documents that are attached to the device upon its sale (sale receipt or cashier’s receipt, instruction of exploitation, warranty card) during the service term. A warranty card establishes warranty liable for device to the extent, provided by the Law of Ukraine On protection of consumer’s rights.

Warranty conditions

  • A warranty provides free repair or replacement of the device during the warranty term. Warranty service is only provided in the presence of a valid warranty card and fiscal check.
  • The renewal of software is a technical maintenance of the product and is not considered as repair and thereforeis not a valid reason for a replacement or a refund;
  • The Periodic service of device (replacement of batteries, cleaning, etc.) is carried out by request for an additional fee.
  • The warranty term for main devices and accessories is set by Sigma mobile with reference to from the date of device’s sale (look at Table 1).
  • Service term is established by Sigma mobile company 2 or 3 years (look at Table 1).
  • Warranty service is provided exclusively at  Authorized Service Centers in Ukraine. The sheet of service centers may be changed

 

Device

Warranty terms

Service term

Mobile phones series X-treme Main deviceEighteen months

Three years

Mobile phonesMain deviceTwelve months
TabletsMain deviceTwelve months
Action camerasMain deviceTwelve months
Bluetooth headsetsMain deviceTwelve months
Accessories and batteriesRechargeable batteries (including built-in types)Six months

Two years

Memory cards, cables, headsets and other accessories and parts, which don’t requare to disassemble the mobile device in order to replace.

One month

Table 1

The manufacturer shall not bear warranty obligation regarding the device in the following cases:

  • Violations of rules and conditions of exploitation, adjustment, installation of device, described in the User’s Manual and other documentation, which is transported to the consumer in the complete set with the device;
  • If mechanical damages have occured after the transfer of the device to the consumer;
  • The ingression of inappropriate items, liquids, insects, etc. inside the device during usage;
  • Device’s operation in conditions of excessively high or low temperature, surrounded by high humidity, high dust content;
  • Making schematic-technical, design or software changes, not approved by the manufacturer;
  • Repair or modification of device, performed by unauthorized persons;
  • If the damage is caused by the use of non-standard and/or non-qualified expandable materials, charging devices, spare parts, batteries, electronic media, software products that were not supplied or recommended by the manufacturer;
  • If the damage (defects) is caused by the action of computer viruses or similar programs;
  • If the damage (defects) is caused by non-compliance with standards or technical regulations of the power, cable, telecommunication networks, radio signal power, including features of the relief and other similar external factors, usage of the device on the edge or outside of a network action zone, connection to inappropriate or defective external devices;
  • If the defect occurred due to natural wearing down during the exploitation of the device. In this case, natural wearing down is understood as the consequences of product’s operation, which caused the deterioration of technical status and appearance due to long-term using of this device;
  • If the damage of LCD pixels of screens does not exceed 0.0005 percent of the total quantity of pixels on the screen (according to the ISO 9241-303)
  • The occurrence of force majeure (natural phenomena, fire, lightning, etc.).

 

The manufacturer shall not carry warranty obligation:

Under no circumstances are the manufacturer or its authorized organizations for unusual, incidental, direct or indirect damage (or losses), including, but not limited to, lost profits, loss or inability to use information or data, expenses of recovering information or data, damages caused by interruptions in commercial, manufacturing or other activity, arising in connection with the usage or inability to use a device.

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