This 20,000mAh power bank handles your laptop. It’s now $49 (new low) | usagoldmines.com

Baseus’s slim 20,000mAh power bank is down to $49 from $90, which makes it one of the cheaper options for real laptop-grade portable power. This isn’t a basic phone top-up brick, but a battery that’s designed to keep laptops running when you’re nowhere near an outlet. It’s listed for $54, but click the Redeem button to drop it down even further.

The 100W USB-C output is one thing that makes this power bank stand out. That’s fast enough to charge a MacBook Pro to 50% in about half an hour, delivering close to what a USB wall adapter provides. Most power banks in this price range slow to a crawl the moment you plug in a laptop, so the Baseus Blade is the one you want for that.

And it has a 20,000mAh capacity, which is enough to juice up most 13-to-15-inch laptops by about 70% or more. That’s useful on long flights or packed days full of meetings and no time to find an outlet. It also has four total ports—two USB-C and two USB-A—so you can even use it to top up multiple phones and accessories as needed, provided you have enough USB cables on you for each one.

Two downsides to be aware of. First, it’s far from pocket-sized. It flat and wide like a tablet, measuring 0.7 inches thick and weighing a pound, which is fine for sliding into your bag next to your laptop but not fine for convenient carrying in hand. Second, you won’t get the full 100W charging output via the main USB-C if you’re using multiple ports at once—the power output will get split up and distributed.

If you’re okay with those caveats, then you’ll get a lot out of the Baseus Blade for just $49. It’s an easy recommendation for travelers and remote workers who are always on their laptops.