If you want raw power and the ability to charge two laptops at once, the Anker Prime 27,650mAh (250W) is the best overall. On a budget, the UGREEN Nexode 20000mAh (130W) delivers laptop-class charging for less. For travel, the rugged Anker 737 (140W) wins.
Who this comparison is for#
This roundup is for people who need to charge a laptop on the move, not just top up a phone. A true laptop power bank means high capacity (20,000mAh or more) plus a USB-C Power Delivery port that pushes 100W or higher.
- Remote workers and students who need a full workday of laptop runtime away from an outlet
- Frequent flyers who want carry-on-legal capacity and fast recharge between flights
- Multi-device owners juggling a MacBook, tablet, and phone from one battery
How we picked#
We focused on banks that can actually run a modern USB-C laptop, not just trickle-charge it. Every pick had to clear the same bar.
- Real laptop output: a single USB-C port rated 100W or higher, enough for a 14-inch MacBook Pro or most Windows ultrabooks
- High capacity that still flies: 20,000mAh and up, while staying under the 100Wh airline carry-on limit
- A usable display: each bank shows remaining charge and live wattage, so you are never guessing
- Proven reliability: each model is vetted against thousands of verified owner reviews and a 4-star-plus rating
- Multi-port flexibility: at least three ports so a laptop, tablet, and phone can share the bank
Product 1 — Anker Prime 27,650mAh (Best Overall)#
The Anker Prime 27,650mAh is the bank to buy when you refuse to compromise. It packs the largest battery in this comparison and the highest total output, 250W across three ports, which is enough to fast-charge two laptops and a phone simultaneously without throttling either one.
A single USB-C port tops out at 140W, so it can drive a 16-inch MacBook Pro at full speed, the same wall-charger experience in your bag. The bright color display is the most detailed here: it shows live input and output wattage per port, remaining percentage, estimated time to empty, and even internal temperature. Pair it with the Anker app and you can cap charging speed to protect battery health or prioritize a specific port.
At 27,650mAh it sits just under the 100Wh airline threshold, so it stays carry-on legal. It is the heaviest pick, which is the honest trade-off for this much capacity, but for a desk-to-plane power user it earns the weight. The optional charging base (sold separately) turns it into a fast desktop dock, though you do not need the base for everyday use.
If you want the deep-dive, read our full Anker Prime 250W review.
Key Specs#
Capacity : 27,650mAh (just under 100Wh, carry-on legal)
Total Output : 250W across 3 ports (2x USB-C, 1x USB-A)
Max Single Port : 140W USB-C (full-speed 16-inch laptop charging)
Display : Color screen with per-port wattage, percentage, time, and temperature
Smart Features : Anker app control for charge limits and port priority
Bottom line#
The most capable bank here: buy it if you charge multiple laptops or want desktop-grade output in a bag.
🇺🇸 Anker Prime 27,650mAh Power Bank (250W) on Amazon US (Roundup) | 🇩🇪 Anker Prime 27,650mAh Power Bank (250W) on Amazon DE (Roundup)
Product 2 — UGREEN Nexode 20000mAh 130W (Best Budget)#
The UGREEN Nexode 20000mAh proves you do not need to spend big to charge a laptop properly. It delivers 130W total and, more importantly, up to 100W from a single USB-C port, which is the real number that matters for a laptop. That is enough to charge a 14-inch MacBook Pro at near-full speed while it is closed and asleep.
For the price, the feature set punches above its weight. A small TFT display reports remaining charge and live wattage, so you get the same "no guessing" experience as banks costing far more. Three ports (two USB-C, one USB-A) let you run a laptop and two smaller devices together, with output intelligently split when ports share the load.
At 20,000mAh (72Wh) it is the lightest and most pocketable bank in this lineup, which makes it the easiest to carry every day rather than only on big trips. It recharges itself quickly too, accepting up to 100W input so it refills in roughly an hour and a half. The compromise versus the Anker picks is simpler: less reserve capacity and a lower ceiling if you ever need to charge two laptops at once.
For the full breakdown, see our full UGREEN Nexode 20000mAh review.
Key Specs#
Capacity : 20,000mAh (72Wh, carry-on legal, lightest pick)
Total Output : 130W across 3 ports (2x USB-C, 1x USB-A)
Max Single Port : 100W USB-C (near-full-speed 14-inch laptop charging)
Display : TFT screen showing percentage and live wattage
Recharge : Up to 100W input, refills in roughly 1.5 hours
Bottom line#
The smart-money pick: real 100W laptop charging and a display, in the lightest, cheapest body here.
🇺🇸 UGREEN Nexode 20000mAh 130W Power Bank on Amazon US (Roundup) | 🇩🇪 UGREEN Nexode 20000mAh 130W Power Bank on Amazon DE (Roundup)
Product 3 — Anker 737 Power Bank (Best for Travel)#
The Anker 737 is the seasoned traveler's pick. It splits the difference between the other two: 24,000mAh of capacity and 140W of total output, in a tough, brick-solid body built to survive being thrown in and out of a carry-on for years.
Its standout travel trait is how fast it refills itself. Feed it a 60W or higher charger and it climbs back to roughly half capacity in about half an hour, so a short layover or coffee stop is enough to get meaningful range back. The crisp digital display shows real-time input and output wattage plus remaining energy, which is genuinely useful when you are trying to gauge whether one more device will make it before boarding.
A single USB-C port delivers up to 100W, enough to charge most 14-inch laptops at full speed, while three ports total let a laptop, tablet, and phone all draw at once. At 24,000mAh it stays under the 100Wh carry-on limit, and the durable shell means you do not baby it. The trade-off against the Anker Prime is lower peak output and a smaller display, but for one-bag travel that simplicity is a feature, not a flaw.
Want the details? Read our full Anker 737 power bank review.
Key Specs#
Capacity : 24,000mAh (under 100Wh, carry-on legal)
Total Output : 140W across 3 ports (2x USB-C, 1x USB-A)
Max Single Port : 100W USB-C (full-speed 14-inch laptop charging)
Display : Digital screen with real-time in/out wattage and remaining energy
Fast Self-Recharge : To roughly 50% in about 30 minutes with a 60W+ charger
Bottom line#
The travel workhorse: durable, fast to refill, and big enough to outlast a long-haul day.
🇺🇸 Anker 737 Power Bank (140W) on Amazon US (Roundup) | 🇩🇪 Anker 737 Power Bank (140W) on Amazon DE (Roundup)
Which one should you buy?#
All three will charge a laptop, so the decision comes down to how much power you need and how you carry it.
If you want the most capable bank and routinely charge more than one laptop, or a laptop plus several accessories at full speed, get the Anker Prime 27,650mAh. Its 250W output and app control make it the closest thing to carrying a wall outlet, and you accept some extra weight for it.
If you want laptop-class charging for the lowest spend, the UGREEN Nexode 20000mAh is the clear value play. You still get a real 100W USB-C port and a display, in the lightest body here, making it the easiest to carry every single day.
If you live out of a carry-on, choose the Anker 737. The rugged build and fast self-recharge matter more than peak wattage when you are moving between gates and hotels, and 24,000mAh comfortably covers a travel day.
Still torn between the two Anker banks? Pick the Prime if max output is the priority and the 737 if durability and quick refills are. Torn between the UGREEN and the 737? The UGREEN wins on price and weight, the 737 on capacity and toughness.
FAQ#
Can these power banks actually charge a laptop, not just a phone?#
Yes. All three deliver at least 100W from a single USB-C Power Delivery port, which is enough to charge most 14-inch laptops at full speed. The Anker Prime goes further with a 140W port for larger 16-inch machines.
Are these power banks allowed on a plane?#
All three stay under the 100Wh limit airlines set for lithium batteries, so they are permitted in carry-on luggage. Like all power banks, they must travel in the cabin, not in checked baggage.
Which one is best for charging two laptops at the same time?#
The Anker Prime 27,650mAh. Its 250W total output and multiple USB-C ports let it fast-charge two laptops plus a phone without sharply dropping the speed of any one device. The UGREEN and Anker 737 are better suited to one laptop plus smaller accessories.
Do I need the charging base for the Anker Prime?#
No. The Anker Prime works as a standard USB-C power bank on its own. The charging base is an optional accessory that turns it into a faster desktop dock, but it is not required for everyday charging.
Which is the lightest to carry every day?#
The UGREEN Nexode 20000mAh. At 72Wh it has the smallest battery of the three, which keeps it the most pocketable while still offering a true 100W laptop-charging port.
How many times can these recharge a laptop?#
Expect roughly one full charge of a 14-inch laptop from the UGREEN, and a bit more headroom from the higher-capacity Anker 737 and Anker Prime. For phones, all three deliver multiple full charges, easily covering several days of topping up.