AUKEY | COMPACT FAST-CHARGING POWER BANK
AUKEY Spark Mini 20000mAh Compact Fast Charging Power Bank PB-Y57
Stay powered throughout your day with the AUKEY Spark Mini PB-Y57 20000mAh Power Bank. Designed for everyday convenience, this portable charger combines a high-capacity battery with USB-C Power Delivery fast charging and a dedicated USB-A output.
Whether you're commuting, travelling, attending classes, or working away from a power outlet, the AUKEY Spark Mini provides dependable portable charging for compatible smartphones, tablets, and other USB-powered devices. Its compact form makes it a practical addition to your everyday carry.
Key Features
20,000mAh
High-capacity battery for everyday portable power.
20W USB-C PD
Fast charging for compatible smartphones and devices.
Up to 22.5W
USB-A output supports compatible fast-charging protocols.
Dual Ports
One USB-C port and one USB-A port.
Compact Design
Portable dimensions for bags and everyday carry.
LED Indicator
Check the remaining battery level at a glance.
20,000mAh Capacity for Everyday Power
The AUKEY Spark Mini has a rated battery capacity of 20,000mAh (77Wh), providing extra power when you cannot access a wall charger. It is suitable for keeping compatible phones and other portable devices charged during busy days, travel, and outdoor activities.
The actual number of charges depends on your device's battery capacity, power consumption, conversion efficiency, and charging conditions. The full 20,000mAh cell rating is not the same as the usable output capacity delivered to a connected device.
20W USB-C Power Delivery Fast Charging
The USB-C port supports up to 20W output through USB Power Delivery 3.0. This allows compatible smartphones and other supported devices to charge faster than with a standard low-power USB charger.
For compatible iPhone models, use an appropriate USB-C-to-Lightning or USB-C-to-USB-C cable, depending on the device. Compatible Android phones and tablets can also benefit from fast charging when their supported protocols match the power bank's output.
USB-A Fast Charging up to 22.5W
The USB-A port supports compatible fast-charging technologies, including Quick Charge 3.0 and supported high-current charging profiles. Its maximum listed output is 22.5W, making it useful for a wide range of compatible phones and USB-powered accessories.
Actual charging speed depends on the connected device, supported charging protocol, and cable. Not every device will draw the maximum available output.
Charge Two Devices with Dual-Port Connectivity
The PB-Y57 includes one USB-C port and one USB-A port, giving you two charging options in a single compact device. You can connect compatible devices through either port, or use both ports when you need to charge two devices.
When both outputs are used simultaneously, the total output is limited to approximately 15W combined according to AUKEY's published product information. Individual charging speeds may therefore be lower than when using one port at a time.
Compact and Easy to Carry
Despite its 20,000mAh capacity, the AUKEY Spark Mini features a compact body measuring approximately 112.2 × 70.4 × 26.3mm. Its portable design makes it suitable for daily commuting, office use, university, and travel.
The power bank weighs approximately 315–322g, depending on the referenced product version. It offers a practical balance between battery capacity and portability.
LED Battery Indicator and Safety
The built-in LED indicator lets you check the power bank's remaining charge without needing a separate app. Its charging circuitry is designed to provide protection against common electrical and temperature-related issues, including overcurrent, short circuit, overcharging, and overheating.
For safe operation, use suitable cables, keep the power bank away from water and extreme heat, and stop using it if the casing becomes damaged or the battery shows signs of swelling.
Technical Specifications
| Brand | AUKEY |
| Product Name | Spark Mini 20000mAh Compact Fast Charging Power Bank |
| Model | PB-Y57 |
| Battery Capacity | 20,000mAh / 77Wh |
| Rated Capacity | 12,000mAh at 5V |
| Battery Type | Lithium-polymer |
| USB-C Input | 5V ⎓ 3A, 9V ⎓ 2A; up to 18W |
| USB-C Output | 5V ⎓ 3A, 9V ⎓ 2.22A, 12V ⎓ 1.67A; up to 20W |
| USB-A Output | 5V ⎓ 3A, 9V ⎓ 2A, 12V ⎓ 1.5A, 10V ⎓ 2.25A; up to 22.5W |
| Maximum Single-Port Output | Up to 22.5W |
| Combined Output | Approximately 15W when both ports are used |
| Charging Technologies | USB PD 3.0, QC 3.0, and supported fast-charging protocols |
| Output Ports | 1 × USB-C, 1 × USB-A |
| Dimensions | Approx. 112.2 × 70.4 × 26.3mm |
| Weight | Approx. 315–322g, depending on version |
| Battery Indicator | LED indicator |
| Colour Options | Varies by regional availability |
| Package Contents | Power bank, USB-A-to-USB-C cable, user manual; confirm the supplied package |
Compatible Devices
The AUKEY Spark Mini PB-Y57 is suitable for charging compatible USB-powered devices, including:
- Compatible iPhone models and other Apple mobile devices.
- Samsung, Xiaomi, and other compatible Android smartphones.
- Compatible tablets and portable electronic devices.
- Wireless earbuds, Bluetooth accessories, and other USB-powered devices.
Compatibility note: Charging speed depends on the device's supported charging protocol and the cable used. Proprietary fast-charging systems may not operate at their maximum advertised speed with this power bank.
Frequently Asked Questions
1. How much battery capacity does the AUKEY PB-Y57 have?
It has a rated battery capacity of 20,000mAh, equivalent to 77Wh. Its published rated output capacity is 12,000mAh at 5V.
2. Does the AUKEY Spark Mini support fast charging?
Yes. Its USB-C port supports up to 20W USB Power Delivery, while its USB-A port supports up to 22.5W with compatible devices and charging protocols.
3. Can it charge two devices at the same time?
Yes. You can use the USB-C and USB-A ports simultaneously. The combined output is limited to approximately 15W, so individual charging speeds may be reduced.
4. How long does it take to recharge the power bank?
USB-C input supports up to 18W. Actual recharge time depends on the adapter, cable, remaining battery level, and charging conditions.
5. Is it suitable for travel?
Its compact size and 77Wh rated battery make it convenient for travel. Airline rules vary, so check your airline's current portable-battery requirements before flying.
6. What warranty does Chittagong Gadget provide?
Please contact Chittagong Gadget to confirm the applicable warranty period and terms for the available unit.
Buy AUKEY Power Banks from Chittagong Gadget
Looking for a compact, high-capacity power bank for your smartphone or tablet? Contact Chittagong Gadget to check the availability, colour, package contents, and warranty of the AUKEY Spark Mini PB-Y57.
Chittagong Gadget
Shop #12, 3rd Floor (Level 3), Saf Amin Shopping Mall
158 College Road, Chawkbazar, Chittagong
WhatsApp: 01889917777
Website: chittagonggadget.com
Specifications are based on AUKEY product information and related product documentation. Details such as weight, colour, and package contents may vary by regional version. Confirm the exact unit before purchase.
