#1 Best-Selling Power Bank
PowerMax 20000mAh Power Bank — Fast-Charging Portable Charger
The PowerMax 20000mAh power bank charges your phone up to 5 times on a single charge. 65W USB-C Power Delivery tops up phones, tablets and even laptops in minutes — pocket-ready power you can trust anywhere.
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- PowerMax 20000mAh power bank
- Braided USB-C to USB-C charging cable
- Travel pouch & quick-start guide
- Free shipping on every order
- 18-month warranty + 30-day money-back guarantee
🔒 Secure checkout · Ships within 24 hours · Easy returns
Why 50,000+ Customers Choose PowerMax
Engineered for people on the move — reliable, fast and built to last.
Ultra-Fast 65W Charging
Power Delivery 3.0 charges most phones to 50% in just 25 minutes and can even run your laptop on the go.
Massive 20,000mAh Capacity
Enough juice for up to 5 full phone charges — plenty for a full weekend away without a wall outlet.
Charge 3 Devices at Once
Dual USB-C and one USB-A port let you power your phone, earbuds and tablet all at the same time.
Slim & Travel-Friendly
Airline-approved and light enough to slip into any bag or pocket — power that goes wherever you do.
Smart Safety Protection
Built-in temperature control and surge protection keep your devices and battery safe on every charge.
Digital Battery Display
A crisp LED readout shows exactly how much power is left — no more guessing when you need a top-up.
The 20000mAh Power Bank That Keeps Up With Your Day
Whether you’re commuting, travelling or working remotely, PowerMax delivers laptop-grade charging in a device that fits in your palm. Looking for bulk or branded units? See our custom power bank corporate gifts, all built to the USB-IF Power Delivery standard.
- 65W USB-C Power Delivery for phones, tablets & laptops
- Recharges itself fully in under 2 hours
- Pass-through charging: power your device while it recharges
- Works with iPhone, Samsung, Google Pixel and more
Built to Last, Backed for 18 Months
Premium lithium-polymer cells retain over 85% capacity after 1,000 charge cycles, so your 20000mAh power bank stays dependable for years.
- Durable aluminium-alloy body
- Over 1,000 full charge cycles
- 18-month manufacturer warranty included
- Rigorously safety-tested and certified
Technical Specifications
Loved by Thousands of Customers
★★★★★ Rated 4.9 out of 5 from over 2,300 verified reviews.
★★★★★
“Charges my iPhone incredibly fast and lasts my whole weekend trip. Easily the best power bank I’ve owned.”
— Sarah L., Verified Buyer
★★★★★
“I run my laptop off it during flights. Slim, powerful and the battery display is so handy.”
— James T., Verified Buyer
★★★★★
“Charges three devices at once for my whole family. Worth every cent — highly recommend.”
— Priya M., Verified Buyer
Frequently Asked Questions
How many times can it charge my phone?
The 20,000mAh capacity delivers roughly 4–5 full charges for most smartphones, depending on your device’s battery size.
Can it charge a laptop?
Yes. The 65W USB-C Power Delivery output can charge most USB-C laptops, including many popular ultrabooks.
Is it allowed on airplanes?
Yes. At 74Wh it falls within the standard 100Wh carry-on limit set by most airlines. Always check your specific airline’s policy.
How long does it take to recharge?
With a 45W or higher charger, PowerMax fully recharges in about 2 hours.
What warranty is included?
Every PowerMax comes with an 18-month manufacturer warranty and a 30-day money-back guarantee.
Never Run Out of Power Again
Join over 50,000 happy customers. Order your PowerMax 20000mAh power bank today with free shipping and a 30-day money-back guarantee.