Price: $45.99 - $29.99
(as of Jun 19, 2025 07:03:31 UTC – Details)
Product Description
Power Up Your iPhone 15 from 20% to 70% in Just 30 Minutes. 
Built in Cable for iPhone, USB C Cable, Micro USB Cable for All Devices 
Compatible with iPhone, Samsung, iPad, All Cellphones 
Say Goodbye to Tangled Wires and Multiple Chargers 
How can I get the best solution if I have a problem with my product?
You can find us on your manual or through your order.
You will get satisfactory compensation if there are any technical problems with our power bank no matter whether the return window is closed or not. We will solve your problem within 24 hours.
Getting hot when charging, is it normal?
Yes. It does get a little bit warm when both fast charging and fast discharging. Please feel free to use it since this power bank has built-in over-heat protection.
What’s the biggest disadvantage of this power bank?
The biggest disadvantage of this power bank is the weight of this power bank is around 12.99 ounces, which is just a bit heavy, but the weight matches the huge juice, fast charging, built-in cables, and wall plug, and broad compatibility.
What is the real capacity of this power bank?
It has 20,000mah but it ends up providing less than 20,000mah to your device because it loses energy when discharged, which is common for power bank.
Portable Charger with Built-in Cables and Wall Plug: Two cords and wall plugs integrated allows the Charmast power bank to be compatible with all cellphones, so you don’t need to bring extra chargers or get frustrated with a tangled mess of wires.
High-speed Charging: Equipped with 20W PD and 18W QC 3.0 fast charging, power up for your iPhone 13 from 20% to 70%, Samsung S21 from 20% to 60% in half an hour—that’s 3x faster compared to an original 5W charger.
20000mAh Capacity: 20000mAh battery capacity provides 3.75 charges for iPhone 14 Pro Max, 3.87 charges for iPhone 13, 4.26 charges for iPhone 12, 1.55 Charges for iPad 10th generation, 2.4 charges for your Samsung Galaxy s22 ultra, 4.33 charges for your Google Pixel, One Plus 11 2.4 charges.
Compact Battery Pack: The weight of this power bank is around 12.99 ounces, which is just a bit heavy, but the weight matches the huge juice, fast charging, and broad compatibility. Thanks to an advanced slim profile that makes for a comfortable grip, the fully rubberized cover lets you enjoy a nice touch and protects your device from scratches or drops.
What You Get: 20000mAh power bank *1, user manual*1, mesh pouch*1, our 24-month support, and 7-day/24-h friendly customer service. If you have any problems, please contact us and we will solve them within 24 hrs.
Customers say
Customers appreciate the power bank’s built-in cables and wall plug feature, its large 20000mAh capacity, and find it convenient to use. The size receives mixed feedback – while some find it perfect for travel, others say it’s too bulky for a small backpack. Moreover, the charging speed, functionality, durability, and value for money show mixed results, with some reporting it works great while others say it stops working after a while.