A portable laptop charger is an ideal partner if you need to charge your laptop while traveling, working remotely, or in an urgency. And it’s not just for laptops: With its built-in AC outlet, it can power other small devices as well, from vibrators and video projectors to breast pumps and baby monitors. We spent 23 hours researching and 65 hours testing nine top models, and we’re confident that the Mophie Powerstation AC is the best option. It can keep up with MacBook Pros and other high-powered laptops, it’s small and lightweight, and it charges via USB-C—and frequently ubiquitous standard.
Mophie Powerstation AC
Mophie’s Powerstation AC is the portable laptop charger we’d buy ourselves. It’s the smallest portable laptop charger we tested and one of the lightest, but it performed well in our testing, offering more than 100 W of power output and enough capacity to bring a dead MacBook Air up to 81% charged—even during heavy use. It also has the best look and feels of any portable laptop charger we tried; we particularly like how its slim, portable design and professional-looking fabric exterior are complemented by perfectly arranged ports and a magnetic rubber flap guard the AC output port. Plus, it’s made by a company we trust, and its 24-month warranty is as good as any we’ve found.
Rated capacity: 22,000 mAh (79.2 Wh)
Measured max output: 123 W
Weight: 1.7 pounds
Dimensions: 7.5 by 4.5 by 1.1 inches
With enough power output to keep a 15-inch laptop running, it charged our MacBook Air to nearly full even with the laptop’s screen brightness up and with video playing. But even with the extra power, it’s the smallest portable laptop charger we tested and one of the lightest, too. It’s stylish and professional-looking yet well protected from dings and scratches, and its slim shape makes it easy to slip into a backpack pocket or briefcase. Plus, this model has some surprisingly useful features, including appropriately spaced ports that make it easy to plug in multiple devices at once as well as a protective rubber flap that covers the AC outlet and keeps out lint and crumbs.
In our peak-power tests, the Powerstation AC got up to 123 watts before shutting down, outperforming all but one model: the Goal Zero Sherpa 100AC. With that much power, the Powerstation AC can charge small devices such as a phone, wireless headphones, or a vaporizer—or even larger ones, such as a high-powered laptop.
When we charged an empty MacBook Air, the Powerstation AC brought it up to 81% with the screen at full brightness, Wi-Fi on, and an HD movie streaming. That may not seem ideal, but even the highest-capacity portable laptop charger we tested—the 27,000 mAh and 30,000 mAh RAVPower units—were able to fully charge the laptop only once under the same conditions. Considering that these power banks primarily serve to provide backup power between periods of access to wall outlets, we concluded that the extra portability of the Powerstation AC was worth the slightly lower capacity.
The Powerstation AC measures 7.5 inches tall, 4.5 inches wide, and 1.1 inches thick (about the size of a paperback novel) and weighs 1.7 pounds, a few ounces heavier than the newest iPad models. It’s flatter and smaller overall than the Jackery and Renogy chargers we tested, 3 ounces lighter than the small RAVPower unit, and nearly half a pound lighter than the large RAVPower unit. It’s encased in a dark gray, twill fabric that looks and feels nicer than plastic (as well as flimsier fabrics we’ve seen on other devices). The fabric seems like it would improve durability, too, by protecting the exterior from cracks and scratches.
Of all the portable laptop charger we tested, the Powerstation AC is one of the easiest to use. Its interface is straightforward: You hold down the power button (until a little green light turns on) to boot up the AC power, and you hold the button down again to turn it off. You can also press a smaller button in the corner that contains the three ports—USB-A, USB-C PD, and AC—to illuminate a row of lights showing how much juice the charger has left.
We especially like the rubber flap over the AC port, which prevents dust and other debris from sneaking into the port when the charger is getting jostled about in a backpack or laptop bag. A magnet keeps the flap securely in place, a nice touch that we didn’t see in any of the other models. The other ports are positioned such that you can fit a fat, three-prong AC plug on one side plus your USB-C and USB-A cables around the corner without interference.
The Powerstation AC is made by a brand we trust (Mophie has been making power accessories for over a decade) with reliable customer support—we called the main number anonymously and within seconds got through to someone who was happy to answer our questions about the Powerstation AC. And its two-year warranty is as long as any we found. Plus, this portable laptop charger is widely available from a variety of retailers.
Omnicharge Omni 20+
If you’d prefer a wider variety of ports than the Mophie Powerstation AC present, the Omnicharge Omni 20+ might be a more suitable fit. Like the Mophie, it has a single AC port and a USB-C input/output port. But it also has two USB-A ports to the Mophie’s one, a DC input port, wireless charging, and an OLED display screen. It’s sleek-looking, compact, and lightweight, and it seems built to last. It’s not quite as powerful as our other picks, but it can still charge most laptops three-quarters of the way full.
Rated capacity: 20,400 mAh (73.4 Wh)
Measured max output: 98 W
Weight: 1.4 pounds
Dimensions: 5.0 by 4.8 by 1.1 inches
If you’d prefer a charger that gives dual input options (DC and USB-C), the Omnicharge Omni 20+ may be a solid choice. It’s not quite as powerful (both in terms of peak power and capacity) as our other picks, but it offers a sleek look, sturdy build quality, and a small and lightweight design that makes it easy to pack in a briefcase or backpack. Plus, it’s Qi wireless charging also as an OLED screen to convey battery life and other information, both of which our other picks lack.
The ports on the Omni 20+ are widely spaced, leaving ample room for multiple plugs. It has an AC output port on one side, USB-C and DC input/output ports on another, and two USB-A output ports, a display screen, and control buttons (to turn the power, AC ports, and USB-A ports on and off) on a third side. It also has a Qi wireless charging feature (though it’s not certified by the Wireless Power Consortium, which we’d prefer as a confirmation of optimal performance), so you can use it to charge some newer phones like the iPhone 11 and Galaxy S20 series—not necessary for everyone, but nice to have if your device is compatible.
Like the Mophie, the Omnicharge is about an equivalent in thickness as a paperback novel. It has a squarish shape, with rounded corners that make it easier to slip into a backpack or briefcase. And at 1.41 pounds, it’s the most lightweight of our picks.
The exterior of the Omnicharge is made of a soft-textured plastic that’s grippy and comfortable to hold, and it seems relatively scratch and scuff resistant. After you handle it for a while, its surface is likely to gain some fingerprints, but not nearly as visibly as on the RAVPower units.
The OLED screen is bright and informative. When you’re recharging the Omni 20+, it displays an outsized battery icon to point out what proportion charge it’s , which is obvious and helpful. But when you’re using the Omni 20+ to charge another device, the screen offers so much information—wattage, voltage, temperature, percent charged, and what ports are currently powered on—that the screen becomes cluttered, making it harder to get headline info at a glance. Still, if you like to keep close tabs on how much power your laptop is getting or precisely how much battery life you have left, you might find that level of detail advantageous.
In our testing, the Omnicharge put out a maximum 98 W of power—less than our other two picks but still plenty of power to charge the high-powered 15-inch MacBook Pro while it was in use. It brought our MacBook Air from 0% to 75% charged, again less than the Mophie and RAVPower models accomplished, but not by much. And it still achieves its primary aim: giving your laptop an extra boost of power until you can find a wall outlet.
Like the Mophie, the Omnicharge comes with a USB-A–to–USB-C cable and USB-C–to–USB-C cable, but not a wall charger. Since most of the people have either a USB-C or DC charger available which will charge the Omni 20+, we expect having to provide your own charger isn’t much of a drawback. (We don’t recommend buying Omnicharge’s charging accessories bundle, however, as the included wall charger is difficult to put together; it stymied us, and we had to ask customer support for help. Plus, you can typically get one of our favorite wall chargers for less money.)
The Omnicharge also doesn’t accompany a protective case. This omission didn’t bother us much, since most people will be carrying their charger around in the same bag as their laptop, phone, and other important belongings, so they’ll likely handle it with care. But we might have liked to ascertain a rubber flap over the Omnicharge’s ports (like the one the Mophie has) to guard its internal components against dust and minor spills.
The Omni 20+’s one-year warranty isn’t as long as the coverage on our other picks, but we still think it’s long enough for you to fully test the charger out and confirm that you don’t have a dud. And when we emailed customer support, representatives responded within a few days, so if you do run into an issue, you can count on timely assistance.
RAVPower 27000mAh AC Power Bank
The RAVPower 27000mAh AC Power Bank provides power on a par with the Mophie but feels less elegant overall. It’s bulkier and features a more finicky interface, and its unwieldy charging cord and power brick are a chore to haul around. It’s also a few quarters of a pound heavier than our top pick, and its grippy rubber finish collects fingerprints. Those details aside, the RAVPower 27000mAh AC Power Bank gives great execution for its price. Its maximum power output is simply 4 W less than that of our pick, and it can fully recharge a MacBook Air once. it’s an equivalent output-port option as our pick, too, plus a further USB-A port. It’s an honest option if you would like a transportable portable laptop charger that comes with its own, designated wall charger—something no other pick offers.
Rated capacity: 27,000 mAh (97.2 Wh)
Measured max output: 119 W
Weight: 1.9 pounds
Dimensions: 6.9 by 5.3 by 1.4 inches
If you don’t mind a bulkier, not-so-sleek charger—and you want something that comes with a wall charger—the RAVPower 27000mAh AC Power Bank is a good, cheaper option. It has almost the same power output and capacity as our top pick, but it’s bigger and heavier, and the clunky wall charger and power brick make it cumbersome to pack up for trips. Even though this model offers similar utility to our top pick, we found that the Mophie Powerstation AC provided a far better overall experience.
In our trial, this unit delivered a peak-power production of 119 W, coming within spitting range of our main pick’s maximum of 123 W. It was able to charge both small devices and a 15-inch MacBook Pro without a problem. When we tested its capacity, it was able to charge a depleted MacBook Air about once from 0% to 100% with the laptop’s screen at max brightness and an HD video streaming. Its larger counterpart aside, this unit offers the highest capacity of any charger we tested, besting the results we saw from the competition by anywhere from 3% (basically a rounding error) to about 25%.
The RAVPower 27000mAh AC Power Bank is only a little heavier than our other picks—1.9 pounds to the Mophie’s 1.7 pounds and the Omnicharge’s 1.4 pounds—and it’s a third of a pound lighter than the 30,000 mAh RAVPower model. But that bit of extra weight (and the added bulk of its wall charger) makes it feel much clunkier, and it’s just not as stylish overall. The gap splitting the charger into two sections is an odd, visually jarring design choice, because it doesn’t seem to serve a purpose. The rubbery exterior of this RAVPower model looks good and feels pleasantly grippy and durable, but it tends to show fingerprints and oils easily.
This unit has a USB-C port, an AC port, and two 2.4-amp USB-A ports (one more than our top pick and the same as the Omni 20+), giving you plenty of charging options. You might have trouble using all of them at once, though, especially if your plugs are wide or oddly shaped, since all of the ports are on the same side.
RAVPower’s 18-month warranty is slightly shorter than Mophie’s coverage, but RAVPower may be a brand we trust in terms of build quality, customer support, and availability.
This smaller-capacity RAVPower unit has a few major downsides. Our biggest complaint is its physical size: It’s one of the biggest models we tested (after the Naztech and larger-capacity RAVPower) at 6.89 by 5.31 by 1.38 inches, and its AC/DC charger is the most unwieldy. The included zip-up hard-shell case may be a nice touch, but the entire setup is just not as portable as our other picks. Anyone carefully packing their bag to commute on public transit or keeping track of every cubic inch of carry-on space for regular business trips will have a much easier time with the Mophie or Omnicharge.
This unit is honestly easy to use but slightly more cumbersome than our main pick. To get the AC output to turn on, you have to hold down the power button for several seconds, and it turns off quickly if it isn’t plugged into something.
In addition to the hard-shell case and wall charger, this unit comes with two USB-A–to–Micro-USB cables. They’re decent cables, but it’s not much of a bonus; if you need to charge Micro-USB devices, you probably already have plenty of those lying around.
RAVPower 30000mAh AC Power Bank
Although the RAVPower 30000mAh AC Power Bank looks almost identical to the 27000 mAh version (and even has the same model number, RP-PB055), there are a few key differences. Namely, it offers a bit more capacity (charging our laptop 1.2 times, versus just once), and it’s about 5 ounces heavier. It’s also more powerful than any of our other picks, capable of pumping out a whopping 149 W to laptops and other power-hungry devices. Like its smaller sibling, it has two USB-A ports and an AC port, and it adds a USB-C Power Delivery (PD) input/output port (instead of DC input and USB-C output). It arrives with a USB-C charging cable without a wall charger—as, with the Mophie and Omnicharge models, you’ll have to provide your own. This model is your best bet if you frequently download large files or run lots of programs on your laptop while away from your desk and you don’t mind some added bulk.
Rated capacity: 30,000 mAh (108 Wh)
Measured max output: 149 W
Weight: 2.2 pounds
Dimensions: 7.0 by 5.4 by 1.8 inches
The RAVPower 30000mAh AC Power Bank looks tons like its 27,000 mAh counterpart, but with a couple of key differences. It’s a bit bigger and heavier, and it’s more powerful both in terms of max output and capacity. It recharges from a USB-C PD input/output port (though, like the Mophie and Omnicharge models, it doesn’t come with a wall charger), and it looks somewhat sleeker than its smaller sibling. Overall, it’s a great charger if you’re looking for maximum power—and don’t mind a little extra weight.
In our testing, this unit had the very best peak-power performance of any model we tried, cranking out a powerful 149 W of power. This means you could plug in a 15-inch MacBook Pro running several programs, as well as a phone and a couple of other small devices, without overloading it.
Incapacity, this unit also reigns supreme. It was able to charge our MacBook Air from 0% to 100%, and then from 0% to 20%, on a single charge. That’s 20% more reliable than the smaller RAVPower model, 40% more reliable than the Mophie, and 45% more reliable than the Omnicharge.
Although this unit is comparatively sleek and compact, at 7.01 by 5.43 by 1.77 inches it’s the most important charger we’ve tested. Weighing 2.2 pounds, it’s also the heaviest. But we think those are reasonable trade-offs for the extra power it gives you.
Like the rest of our picks, the RAVPower 30000mAh AC Power Bank has a single AC outlet. It also has two USB-A ports, which are powerful enough to charge most handheld devices (one is rated for 3 amps, and the other for 2.4 amps). Its lone USB-C PD port can charge a device such as a Nintendo Switch, 13-inch MacBook Pro, or Google Pixel phone, as well as recharge the unit itself. This port may be a notable improvement over the smaller RAVPower unit’s USB-C output port, because with the proper cable PD charging is far faster than standard USB-C output, holding up to 100 W versus a mere 15 W of power.