In one look
Expert Rating
Benefits
- Huge battery capacity
- 140W charging power (PD 3.1)
- Portable with handle
Our verdict
The Ugreen 48000mAh power bank has the largest battery capacity we’ve seen outside of a prepper portable power station and features more ports, while beating all competitors with its maximum simultaneous output power of 300W.
The Ugreen 48,000mAh 300W Portable Power Bank (300W) has a larger battery capacity than any other power bank we tested. At 48,000mAh, it’s designed to be the missing link between a laptop power bank and a full-scale portable power station.
It’s small and portable enough to be referred to as a personal power bank, but has the miniature look of something you might connect to your solar panels and keep in the garage.
With its 140W USB-C PD 3.1 port, it’s a perfect match for Apple’s premium 16-inch MacBook Pro, which can be fast-charged at 140W using Apple’s USB-C to MagSafe 3 Cable.
Power Bank Technical Specifications
- Battery capacity: 99.56 Wh
- Fastest output power: 140 W
- Total output power: 300 W
- Power Input: 140 W
- USB ports: 1x USB-C (140W PD 3.1); 2x USB-C (100W PD 3.0); 2x USB-A (22.5W)
- Dimensions: 6.3 x 5.7 x 3 inches (16 x 14.5 x 7.6 cm)
- Weight: 3.6 lb (1.65 kg)
Performance power
We managed to charge our test 14-inch M2 MacBook Pro 1.8 times, which leads us to believe it will charge a MacBook Air at least twice. With the Pro, we went from 5% charge to 90% in an hour, which is impressive.
Once we brought the MacBook back down to 5%, the power bank’s display showed 43% battery charge remaining, but that figure strangely dropped quickly to around 22% when we plugged it back into the laptop.
Batteries charge in a non-linear manner. Rather than absorbing energy at a constant, predictable rate, the rate at which a battery charges varies based on many variables, including how much charge is already in the battery. The fuller the battery, the slower it absorbs energy.
We still got between 5% and 80% on this reduced charge, so it looked like an initial display error. The most important thing is that the power bank continued to charge for so long.
With its 140W USB-C port, this power bank is particularly suited to the high-end 16-inch MacBook Pro, as it can be charged quickly. Apple does, however, require that you use its USB-C to MagSafe 3 cable rather than a standard USB-C to USB-C charging cable. The charging cable that comes with the power bank is capable of 240W, but Apple insists that you use its cable for 140W fast charging.
While the 140W USB-C is great news for owners of Apple’s premium laptop, the Ugreen 48,000mAh battery is a powerful solution for all MacBook models because it has such a high capacity and more ports than we’ve seen from the competition.
Check out our list of MacBook battery capacities for details on the entire Apple laptop lineup.
It’s perfectly safe to charge even the 5W Apple AirPods charging case using a 140W port, so don’t worry about overcharging your power supply. This is regulated by the device receiving the charge. That said, this power bank can be set to trickle charge mode which provides a constant, low-level charge for devices that require minimal power to charge. To activate this mode, press and hold the power button for three seconds.
Dominik Tomaszewski / Foundry
Dominik Tomaszewski / Foundry
Dominik Tomaszewski / Foundry
More USB ports than most
Although its primary function is to charge laptops, the Ugreen 48000mAh power bank can charge up to five devices simultaneously. You can charge a MacBook at the same time as one or two iPhones, iPads, AirPods or Apple Watches.
The first USB-C port is rated at 140W, and the other two at 100W each. A few 22.5W USB-A ports are available for older devices.
The maximum output power is 300W, which is again a high level in all our laptop power bank tests. So you can’t use all three USB-C ports at full power, but there are plenty of options that use all five ports.
For example, you can charge three MacBooks at 100W each using all USB-C ports at the same time. Or power a 16-inch MacBook Pro at 140W and another MacBook at 100W, with the other ports reserved for other, less power-hungry devices.
Between the two USB-A ports, there is an easy-to-use power button that allows you to stop charging without having to unplug the cables from the ports.
High camp capacity
The number of ports and the generous 300W total power, along with the size of the battery capacity, give you plenty of options. This power bank seems like a great choice for camping trips where you might need to use it just to charge an iPhone 15 Pro ten times.
While its 153W battery capacity is just within the maximum in-flight limit of 160Wh (if approved by the airline), you’re unlikely to need all that power, even on a long-haul flight. There are more portable but still high-capacity power banks that are better suited for air travel, such as the Ugreen Nexode 20,000mAh Power Bank.
It’s best suited to car travel, or perhaps charging at home or the office in the event of a local power outage. Preppers may prefer something with a colossal battery capacity. Again, simply choosing from Ugreen’s own range, we’d point preppers towards the PowerRoam 2400W 2048Wh Power Bank, which is so large it requires its own set of wheels.
Charge the power bank
Of course, once the battery is depleted, the power bank needs to be recharged. It takes about an hour and a half to recharge it via the 140W USB-C port.
You can see the remaining charge on the central smart screen of the power bank.
Dominik Tomaszewski / Foundry
Dominik Tomaszewski / Foundry
Dominik Tomaszewski / Foundry
Large but still portable
It’s a bit insulting to call the Ugreen 48000mAh power bank “large.” It’s actually quite compact for such a large battery, but compared to other laptop power banks, it’s rather bulky. It feels more like a small handbag than the suitcase-like portable power stations.
It weighs over 3.5 pounds (1.65 kg), compared to other laptop power banks that weigh around 20 oz (550 g).
But thanks to its handle, it’s quite easy to carry around the house. It’s definitely not pocket-sized and would be quite heavy to carry in a standard backpack.
It looks cool in its metallic grey, although it does pick up greasy fingerprints quite easily, so it’s best to use the handle.
Dominik Tomaszewski / Foundry
Dominik Tomaszewski / Foundry
Dominik Tomaszewski / Foundry
The display on the front of the power bank shows a large percentage of battery remaining, and below that on either side are readings for total input power and total output power.
While it’s not as colorful as some laptop power bank smart displays, it’s easy to read even in bright light.
Price
The Ugreen 48000mAh portable power bank retails for $199.99 / £199.99. Check out our real-time price comparison above for the best prices in your area.
The rival laptop power bank, the Anker Prime 27650mAh, has a smaller battery capacity in a more compact form factor and two fewer ports, but costs just $20/£20 less.
To be fair, it’s a different proposition being much more portable, but if you’re looking for power to price ratio, it’s hard to beat the Ugreen 48000mAh power bank.
Should I buy the Ugreen 48000mAh 300W portable power bank?
The Ugreen 48000mAh 300W Portable Power Bank is larger than most laptop power banks, but still remarkably compact for such a large capacity battery. It has the largest battery capacity we’ve seen outside of prepper portable power stations, and has more ports, all while outperforming all competitors with its 300W maximum simultaneous output.
Hide it away for emergencies or take it camping, where it will keep multiple devices charged for a long weekend.
It’s particularly well-suited for 16-inch MacBook Pro owners who can take advantage of its 140W PD 3.1 charging and full battery capacity, but MacBook Air owners will be able to charge their laptops and other devices more than once using this neat power bank.
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