Anker 737 (140W) Power Bank Review: Big Capacity, Smarter Charging

The quick take

If you need a travel-ready battery that can meaningfully power a laptop and blitz-charge phones, the Anker 737 delivers. Its 24,000mAh capacity, 140W Power Delivery 3.1 output, and clear real-time display make it easy to see exactly what’s going on while you charge. It’s on the heavy side for everyday carry, but for road warriors, commuters, or anyone who lives out of a backpack, the practicality outweighs the bulk.

Design and portability

• Footprint: about 6.1 × 2.1 × 1.9 inches
• Weight: roughly 22 oz
• Travel: meets TSA carry-on requirements

This isn’t a pocket bank; it’s a bag companion. The dense build feels premium and purpose-built for laptops and tablets. It’s allowed in carry-on luggage, which makes it a compelling long-flight companion. Just remember the weight when you’re already hauling a laptop and accessories.

Charging performance

• Up to 140W fast output via Power Delivery 3.1
• Fast recharging when paired with a 140W charger and a 5A USB-C cable (both matter)
• Smart display shows input/output wattage and estimated recharge time

In real use, the bank can fast-charge capable laptops and phones without fuss. The two-way fast charging is a standout: it not only pushes serious power out, it also refuels quickly when you use the right gear. If you see lower-than-expected speeds, the display helps you troubleshoot—often it’s the cable (use an e-marked 5A cable) or a lower-wattage wall charger.

Capacity in the real world

• Rated capacity: 24,000mAh
• Manufacturer guidance: about 4.13 charges for an iPhone 16 Pro, ~1.33 for a 2024 13-inch iPad Pro

Expect real-world results to be somewhat lower than quoted cycles due to conversion losses, device behavior, and background use. Practically, it’s enough for a meaningful laptop top-up and multiple phone charges, or to keep a tablet going through a full travel day.

Intelligent display: actually useful

The live power readout and recharge-time estimate reduce guesswork. It’s great for verifying you’re getting PD fast charging, diagnosing slow speeds, and planning when to plug in before boarding.

Travel notes

• Carry-on friendly per airline guidance in the description
• Bring a known-good 5A USB-C cable and a high-wattage charger to maximize refill speed
• Some laptops and accessories may not negotiate full speed if they don’t support PD the same way—check your device’s PD compatibility

Who should buy it

• Travelers and commuters who need reliable laptop and phone top-ups
• Students and field workers who value fast refueling and a clear power readout
• Anyone who wants fewer charging surprises and better visibility into power flow

Who should skip it

• Minimalists who prioritize pocketability over capacity
• Users who don’t need laptop-level output and can live with a lighter, lower-capacity bank

Pros

• Strong 140W PD 3.1 output for fast laptop and phone charging
• Fast recharging when paired with a 140W charger and 5A cable
• Clear, real-time display for watts in/out and recharge estimate
• Travel-friendly for carry-on

Cons

• Heavier than typical power banks; best for bag carry
• Full-speed performance depends on having the right cable and wall charger
• Overkill if you only need occasional phone top-ups

Verdict

The Anker 737 is a workhorse power bank that prioritizes speed, transparency, and capacity. It’s not the lightest option, but if you regularly charge laptops or multiple devices on the go, the 140W output and smart display make it a dependable, no-drama choice—especially when you pair it with a proper 140W charger and a 5A cable.