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Anker 737 PowerCore 24,000mAh Review: The Power Bank That Charges Your Laptop, Not Just Your Phone
A 24,000mAh power bank that actually charges laptops at full speed, reviewed on whether its bulk and premium over pocket banks are worth it.
Anker 737 PowerCore 24,000mAh Review: The Power Bank That Charges Your Laptop, Not Just Your Phone
The Bottom Line
Buy it if you travel enough that an outlet is sometimes a suggestion rather than a guarantee. The Anker 737 isn't for topping up a phone on the subway — it's for the person who's landed a redeye with 4% battery, a dead laptop, and a three-hour layover standing between them and their next meeting.
Who should buy this: Frequent flyers, long-haul commuters, grads starting jobs that involve airports, and anyone who travels with both a phone and a laptop and refuses to pack two separate chargers.
Who should NOT buy this: Casual phone users who just want an emergency top-up for a night out. Anyone who already owns a 10,000mAh slim bank and rarely leaves it depleted. People who count grams in a daypack and will resent the bulk every single time they lift it.
How We Assessed It
The real comparison here isn't to other power banks of the same capacity — it's to the question of whether you need this much capacity at all, versus a slim 10,000mAh pocket bank or simply packing your laptop's own charger and finding an outlet. The trade-offs that separate them: a slim bank disappears in a jacket pocket but can barely get a laptop started, let alone finished; packing a wall charger means you're tethered to an outlet that may not exist on a plane, train, or hiking trail. The 737's case for existing rests entirely on whether 140W output and genuine laptop-charging capability justify the size and weight it demands you carry. We also looked at what owners report in practice: the onboard display reading out exact wattage and remaining capacity is consistently flagged as the feature people didn't expect to rely on so much, while the size and the need to double-check airline carry-on battery policies before flying come up as the recurring friction points.
The Good
The capacity claim isn't marketing exaggeration. 24,000mAh is enough to take an iPhone through roughly five full charges, an iPad through about two, or a MacBook Air through a complete charge from empty. That's not a number on a box — it's the difference between panicking at 4% and shrugging.
140W output means it actually charges laptops, not just phones. Most power banks advertised as laptop-compatible top out at a trickle that barely keeps pace with use. The 737 pushes enough wattage to charge a MacBook Air at something close to its full native charging speed, which is the one spec that actually separates this from the shelf of generic banks beside it.
The display turns guesswork into information. A screen showing exact wattage in and out, plus remaining capacity, sounds like a gimmick until you're rationing charge across a phone, earbuds, and a laptop on a long travel day. Knowing you have 38% left and are pulling 65W is genuinely more useful than a four-dot gauge.
One bank replaces a drawer of chargers. For someone who travels with a phone, a tablet, and a laptop, the 737 collapses three separate charging bricks and cables into a single device that handles all of them. That consolidation is the real gift-angle here, not the raw capacity number.
The Bad
It is genuinely large and heavy. 24,000mAh of cells doesn't compress down to pocket size no matter whose engineering is behind it. This sits closer to a paperback book than a phone case, and it earns a dedicated spot in a bag rather than a jacket pocket.
It's overkill if you're only charging a phone. Paying the premium this commands over a slim 10,000mAh bank makes little sense if your actual use case is one phone top-up a day. The extra capacity and wattage are wasted weight for anyone who isn't also charging a laptop or tablet.
Airline carry-on rules deserve a check before you fly with it. High-capacity lithium power banks sit in a gray zone for some carriers, and policies vary by airline and region. It's worth confirming your specific flight's rules rather than assuming a bank this size clears security without a second look.
Full-speed laptop charging only happens with the right cable and device. The 140W ceiling is real, but hitting it depends on a USB-PD-compatible laptop and a cable rated for the load. Pair it with the wrong cable or an older laptop and you'll get a fraction of the advertised speed, which isn't obvious until you've already bought it.
Who It's Really For
Someone who travels often enough that a dead battery mid-trip is a recurring, specific memory rather than a hypothetical — the commuter whose train runs late, the consultant living out of airports, the grad whose new job means being reachable from anywhere. For that person, this stops being an accessory and becomes the thing they'd actually notice missing from their bag.
Final Verdict
Price-Per-Value Rating: 8.3/10
The 737 is not a casual gift and not a casual purchase — it's a tool for people whose days regularly outlast their devices' batteries. The size and weight are real costs, and anyone who only needs a phone top-up should look at something smaller and cheaper. But for the traveler who needs a laptop charged from empty in an airport lounge with no outlet in sight, nothing at this size does it better.
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