NOBIS ZWPBWWA-202C2A45W 45W Power Bank, 20,000mAh, 4-Port

Four charging ports let the NOBIS power bank supply up to four devices at once, so a phone, tablet, or other compatible device can share one portable battery. Its 45W USB-C output supports fast charging, while the digital display makes the remaining charge easy to check.

With 20,000mAh capacity, this green battery pack is suited to travel, workdays, and times when outlets are out of reach. Choose a multi-device power bank like this when you want to charge several items from one unit, a single-output backup battery is better suited to charging one device at a time.

Who it’s for

This charger is made for people who carry several USB-powered devices or want to share power while traveling. Its listed compatible devices include smartphones, laptops, tablets, smartwatches, and drones. For a group trip, four available ports can keep multiple devices connected at the same time instead of making each person wait for a turn.

What you’ll notice day to day

Two USB-A ports and two USB-C ports give you a mix of connection options. USB-C supports both input and output, with up to 45W output and up to 45W input. The manufacturer cites charging an iPhone 15 Pro from 0% to 60% in 30 minutes, actual charging depends on the connected device and setup. A digital percentage display helps you see when the power bank needs recharging, and built-in cables add a ready-to-use connection option.

At 392 g and 5.39 x 2.76 x 1.04 inches, it’s a substantial-capacity pack that can travel in a bag for outings or business trips. Buyers often value its convenience for travel and its portability, while feedback on charging speed, reliability, battery life, and capacity is mixed. As with other rechargeable power banks, the rated 20,000mAh capacity is not the same as the usable charge delivered to devices: the manufacturer estimates about 12,000–13,000mAh after conversion losses, depending on output voltage and current.

Key takeaways

• Capacity: 20,000mAh
• Output: Up to 45W through USB-C
• Ports: Two USB-A and two USB-C, charge up to four devices at once
• Display: Digital percentage readout
• Protection: Overcharge protection, short-circuit protection, and auto shut-off
• Included: Built-in cables and instruction manual
• Size and weight: 5.39 x 2.76 x 1.04 inches, 392 g

For a two-hour full recharge, use a 45W-or-higher PD charger and a compatible 45W (3A) cable. The manufacturer lists the 74Wh power bank for carry-on baggage, not checked luggage, airline policies may vary.

Before you decide

Can it charge several devices at once? Yes. Its two USB-A and two USB-C ports support simultaneous charging for up to four devices.

How long does it take to recharge the power bank? The listed two-hour recharge time requires a 45W-or-higher PD charger and a compatible 45W (3A) cable. Lower-wattage charging equipment takes longer.

Can you take it on a plane? The manufacturer states that its 74Wh rating meets the cited carry-on limit and that it belongs in cabin baggage, not checked luggage. Check your airline’s current rules before traveling.

When it makes sense

Choose this NOBIS pack when you want one rechargeable source for several devices, a clear readout of remaining power, and up to 45W USB-C output in a travel-ready format. It’s especially useful for trips, shared charging, and days when you need to keep a phone and other compatible gear powered away from an outlet.