20000mAh Slim Power Bank Ultra-Thin Fast Charging

A 20000mAh slim power bank with fast charging and dual USB outputs, sized to slide into a back pocket.

This 20000mAh slim power bank carries enough capacity for several full phone charges in a body thin enough to live in a jeans pocket, a small purse, or a laptop sleeve. Dual USB outputs and fast charging mean two devices can top up at the same time on a flight, a workday, or a road trip.

Why this slim power bank

• 20000mAh capacity: recharges most smartphones multiple times over before the power bank itself needs a refill.
• Ultra-thin profile: the flat body slides into a pocket, bag, or purse without bulk.
• Fast charging output: delivers rapid power to compatible iPhone and Android devices.
• Dual USB outputs: charges two devices in parallel on a desk, in the car, or on the go.

Specs and details

• Capacity: 20000mAh
• Outputs: 2 USB ports
• Color: hot pink
• Form factor: ultra-thin pocket-size portable charger
• Charging: fast charging output

Want more tech for your setup? Try our 150x Astronomical Telescope with Tripod & Phone Adapter.

Frequently asked questions

How many times can a 20000mAh power bank charge a phone?
A typical modern smartphone runs on a 3000 to 4500 mAh battery, so a 20000mAh slim power bank can deliver roughly four to six full phone charges before it needs a refill, depending on the phone.

Is a 20000mAh power bank allowed on a plane?
Most 20000mAh power banks are accepted in carry-on luggage by major airlines. They must stay in your cabin bag, not checked. Confirm the watt-hour limit with your airline before you fly.

Will this slim power bank fast-charge an iPhone or Galaxy?
Yes. The fast charging USB outputs work with iPhones, Galaxy phones, Pixels, and most modern Android devices that accept fast charging over USB.

How long does the power bank itself take to recharge?
Recharge time depends on the wall charger you use. A higher-wattage USB wall charger will refill the 20000mAh pack faster than a basic 5W brick.