Large Capacity Portable Mobile Power Pack Power Bank

Never run out of battery when it matters most. The A21 Large Capacity Portable Power Bank is a reliable, compact, and universally compatible charging solution built for people who are always on the move. Whether you are commuting to work, traveling across cities, attending classes, or heading into the outdoors, this power bank delivers a steady, dependable charge to keep your devices powered up and ready at all times.

With dual USB output ports, built-in protection circuitry, and compatibility with 99% of smartphones and tablets on the market, the A21 is the everyday charging companion that simplifies your life and eliminates low-battery anxiety for good.

Key Features

Large Capacity Battery for Extended Charging

Powered by a high-capacity cell configuration using a 955465 or 18650 x 3 battery setup, this power bank stores enough energy to charge your smartphone multiple times on a single full charge. It is built for users who need reliable backup power through long days away from wall outlets.

Dual USB Output Ports for Simultaneous Charging

Equipped with two USB output ports delivering DC 5.0V at 1A and 2.1A respectively, this power bank lets you charge two devices at the same time. Keep your phone and your earbuds, a tablet, or a friend's device topped up simultaneously without needing a second charger.

Built-In Protection Circuit for Safe Charging Every Time

The onboard protection circuit guards against overcharging, over-discharging, overheating, overcurrent, and short circuit risks. Every charge session is monitored and regulated to keep both your devices and the power bank itself safe and performing at their best.

Broad Universal Compatibility

Designed to work with 99% of smartphones and tablets on the market, including iPhone, iPad, Samsung Galaxy, Android devices, Pixel phones, Bluetooth devices, and more. One power bank covers every device in your household.

Compact and Pocket-Friendly Form Factor

Measuring just 92 x 63 x 23mm, the A21 slips effortlessly into a pocket, handbag, backpack, or travel pouch. Its slim, lightweight plastic shell strikes the ideal balance between large capacity and genuine portability so you never have to leave it behind.

Efficient Input for Fast Recharging

The DC 5.0V / 2A input port recharges the power bank efficiently so it is ready for your next outing without a long wait.

Available in Classic Black and White

Choose between clean white or sleek black to match your personal style and everyday carry aesthetic.

Specifications

Who Is This For?

The A21 power bank is a smart everyday essential for commuters, students, travelers, remote workers, and anyone who relies on their phone or tablet throughout the day. It also makes a practical emergency backup for power outages and unexpected low-battery situations.