UGREEN 300W 48000mAh Power Bank Review: The Only Power Bank You’ll Ever Need

UGREEN is one of the largest charging accessory brands in the world, and while its core business is still GaN chargers, it has branched out into power banks and power stations. The latter not having experienced much dynamism, the brand decided not to launch new products. However, it took the learnings from this category to create the 48,000 mAh power bank, its largest power bank to date.

What I like most about the power bank is its size; it’s larger and heavier than the 145W 25000mAh power bank, but considering you get almost double the battery size, UGREEN has done a phenomenal job with the overall design. The 48,000 mAh power bank costs $199 on Amazon, and there is an introductory offer that lets you purchase the power bank for $139. UGREEN has the same deal on its website and you can get it for just $139 using the code. PB300W.

Portability is a key selling point of this power bank, and this is made easier by the large carrying handle on the top – allowing you to easily take it anywhere. It’s not as versatile as a normal power bank, and you can’t just throw it in a bag: the 48,000 mAh power bank weighs 4.1 lbs (1.8 kg). That said, you don’t notice the weight as much, and the carrying handle makes a difference in this area.

The power bank has rubber feet at the bottom and stays planted on a desk. Just like the Revodok Max 213, you get rubber feet on the back and you can use the power bank face up.

The design is similar to most UGREEN products, with the power bank decorated in a dark gray color scheme that looks great. The chassis is made of plastic and the build quality is exceptional, as one would imagine for a product in this segment. The front is dominated by a panel that displays the battery charge level, and you get input and output indicators – these show real-time charging stats.

The 48,000 mAh power bank includes two USB-A ports, each rated at up to 22.5W, but it’s the three USB-C ports that will see the most use. All three are based on the USB PD 3.1 standard and two ports go up to 100W. The main USB-C port is the default way to charge the power bank, and what’s great about this port is that Not only can you charge the power bank at 140W, but you can also use the port as an output, giving you the ability to charge just about any device.

You have a button on the front to manually turn the device on or off, and overall, UGREEN nails the design and build quality. A particularly useful addition is a large LED light on the left that has three modes: medium, high, and strobe. The light is really handy if you use the power bank outdoors, and it becomes very bright.

The biggest differentiator of the power bank is the 48,000 mAh battery, and it is capable of charging any gadget multiple times. I used it with the Pixel 8 Pro, Xiaomi 14 Ultra, Honor MagicBook 16, and for charging another power bank, and it was great everywhere.

I haven’t paid much attention to efficiency numbers in the past, but that’s something I’m changing with the 48,000 mAh power bank. Due to the general way charging works, power banks are not inherently efficient, so in this case, even if you get a 48,000 mAh battery, the efficiency is around 55%. The battery decreased by a margin of 8,500 mAh for charging a 4,500 mAh device and 10,500 mAh for charging a phone with a 5,500 mAh battery.

This is true for all power banks in general; you typically get 60-65% efficiency at most, and that depends on factors like charging voltages and heat transfer. Other recent power banks I’ve used have hit the 60% mark, but not beyond that.

To UGREEN’s credit, the brand uses LiFePO4 batteries on the 48,000 mAh power bank, so they should last a long time without noticeable degradation. They also have better density, and this is what allows the power bank to be smaller than its alternatives. UGREEN notes that the batteries can hold up to 80% charge after 3,000 charge cycles, which is nearly three times more durable than traditional lithium-ion batteries.

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There are five charging ports in total and you can use the 48,000 mAh power bank to charge up to five devices at the same time. The power budget varies greatly depending on how many devices are charged simultaneously, and with all ports used you get a total of 130W of addressable power. The best use case is to use all three USB-C ports at once, and in this scenario you get 300W to 100W through each port.

Since you can use 140W to charge the power bank itself, it takes less time to charge the 48,000mAh battery. In my testing, the battery reached a full charge in just over 100 minutes, and that’s more than enough. The only problem I have with this is that there aren’t many accessories; you get a single 240W USB-C to USB-C cable, and that’s it. UGREEN makes some of the best GaN chargers, and while the inclusion of the 140W Nexode would have increased the cost of the power bank, the brand should have at least bundled more cables into the package.

If you need a power bank with a particularly large battery and want a portable product, the 48000 mAh power bank is now the ideal choice.