JUOVI J2621 45W Power Bank, 20,000mAh with 4 USB Ports and LED Display
Product description
With up to 45W output through USB-C, the JUOVI J2621 power bank can provide fast charging for compatible phones, tablets, and gaming devices while you’re away from an outlet. Its 20,000mAh capacity and four-port layout make it practical for commutes, trips, and days when several devices need power.
The digital display shows remaining charge from 0–100%, so you can check the available power at a glance and plan your next recharge.
What stands out
Two USB-C ports and two USB-A ports let you connect up to four devices at once. A single USB-C port can deliver up to 45W, while USB-A can deliver up to 30W. When multiple devices are connected, they share up to 40W total. Need to keep a phone and other gear powered during a trip? The multi-port design makes sharing one battery pack convenient, while a single-port charger is better suited to charging one device at a time.
The 20,000mAh battery is rated at 74Wh, giving you portable power for phones, tablets, and gaming devices. USB-C supports both input and output up to 45W, and the built-in display makes it easy to see how much charge remains. Buyers often praise the charging speed and find the pack handy to carry in a backpack for travel. Feedback on battery life and weight is mixed, so those experiences vary.
Worth noting
The power bank supports PD 2.0 and 3.0, QC 2.0 and 3.0, and AFC fast-charging standards. Actual charging speed depends on the connected device and its input requirements. For laptops, the manufacturer recommends using it for emergency charging, check the laptop’s input power when deciding whether it suits that need.
A 45W or higher PD charger and a 45W (3A) cable are required for the stated approximately two-hour recharge time. The charger is sold separately. Its 74Wh rating is generally within the 100Wh limit for cabin carry, but it must travel in carry-on baggage, not checked luggage, airline policies can vary.
How to use it
Connect a device to a suitable USB-C or USB-A port, then use the display to keep track of the power bank’s remaining charge. For low-power devices such as AirPods, Bluetooth headphones, or smartwatches, double-click the power button to enter Low-Current Mode, double-click again to exit. This gives you one pack for everyday phone charging as well as smaller accessories.
Before you decide
How many devices can it charge at once? It has four ports—two USB-C and two USB-A—and supports charging up to four devices simultaneously. Combined output is shared across connected devices, up to 40W total.
What do I need for a fast recharge? Use a 45W-or-higher PD charger with a 45W (3A) cable to reach the stated recharge time of about two hours. Lower-wattage charging equipment takes longer.
Can I bring it on a plane? Its rated energy is 74Wh, which is generally within the cabin limit of 100Wh. Carry it in the cabin rather than checked luggage, and follow your airline’s current rules.
Buying verdict
For travel, commuting, or shared charging, the JUOVI J2621 combines a substantial 20,000mAh capacity with four ports, USB-C output up to 45W, and a clear remaining-charge display. It’s especially useful when you want one portable power bank to serve several compatible devices, including low-power accessories through its dedicated mode.