Anker 737 Power Bank Review: 24,000mAh Beast for Power Users

What if your power bank could charge your MacBook Pro at full speed while you're working at a coffee shop? That's exactly what the Anker 737 Power Bank promises to deliver. With its massive 24,000mAh capacity and industry-leading 140W output, this portable charger isn't just another power bank—it's a portable power station that can keep your laptop, phone, and tablet running all day long.

After three months of rigorous testing across airports, coffee shops, camping trips, and marathon work sessions, I'm ready to share my complete verdict on whether the Anker 737 lives up to its impressive specifications. If you've been searching for the best power bank for laptops in 2026, this review will help you decide if the Anker 737 is worth the investment.

Unboxing and First Impressions

Opening the Anker 737's retail box immediately signals that this is a premium product. The packaging is sturdy, with foam inserts protecting the power bank during shipping.

What's in the Box

• Anker 737 Power Bank (24,000mAh)
• USB-C to USB-C cable (100W rated, 3ft)
• Travel pouch
• Quick start guide
• Warranty card (24-month warranty)

The first thing you notice when picking up the Anker 737 is its heft. At 632 grams (1.39 lbs), it's noticeably heavier than standard power banks, but that weight translates directly into raw power capacity. The matte black finish feels premium and, more importantly, resists fingerprints exceptionally well.

Design and Build Quality

Anker has clearly put significant thought into the 737's design. The rectangular form factor measures 6.13 x 2.15 x 1.95 inches—roughly the size of a small paperback book or about 1.5 iPhone 14 Pro Max devices stacked together.

Build Materials and Construction

The exterior shell is made from a high-quality polycarbonate blend with a subtle matte texture. Unlike glossy power banks that show every smudge and scratch, the Anker 737 maintains its clean appearance even after months of daily use. The edges are slightly rounded, making it comfortable to hold despite its size.

Physical Specifications

The standout design element is undoubtedly the smart digital display located on the front face. Unlike basic LED indicators that show vague battery levels, this screen provides real-time information including:

• Remaining battery percentage
• Individual port output wattage
• Input charging wattage
• Estimated time to full charge or depletion

Capacity and Technical Specifications

The Anker 737 packs a 24,000mAh battery, which translates to approximately 86.4Wh of energy. This is significant because it sits just under the FAA's 100Wh limit for carry-on batteries, making it fully airline compliant.

Complete Technical Specifications

Understanding the 140W Output

The 140W output capability is what sets the Anker 737 apart from virtually every other consumer power bank on the market. This high wattage is achieved through USB Power Delivery 3.1 specification, which introduces the Extended Power Range (EPR) allowing for 28V/5A output.

However, it's crucial to understand that 140W output is only available through the USB-C1 port, and your device must support PD 3.1 to take full advantage of it. Currently, the devices that can utilize this include:

• MacBook Pro 16-inch (2021 and later)
• MacBook Pro 14-inch (with 140W charging support)
• Select gaming laptops with PD 3.1 support
• Some high-end tablets

Laptop Charging Performance

The primary selling point of the Anker 737 is its ability to charge laptops at near-wall-charger speeds. I tested this extensively with several popular laptops.

MacBook Pro 16-inch M3 Pro Test Results

My primary test device was a MacBook Pro 16-inch with the M3 Pro chip, which supports 140W MagSafe charging.

Test Conditions:

• Starting battery: 20%
• Screen brightness: 50%
• Wi-Fi: Connected
• Workload: Light web browsing and document editing

Results:

The MacBook charged from 20% to 82% in one hour while I continued working—impressive for a battery-powered charger. The digital display consistently showed output between 85-95W during active charging, dropping to 60-70W as the MacBook approached higher battery percentages.

Dell XPS 15 Test Results

I also tested with a Dell XPS 15, which supports up to 130W USB-C charging.

Results:

• 0% to 50%: 48 minutes
• 0% to 80%: 78 minutes
• Average charging wattage: 75-85W

ThinkPad X1 Carbon Test

The ThinkPad X1 Carbon with its 65W charging limit showed efficient performance:

• 0% to 50%: 35 minutes
• 0% to 100%: 95 minutes
• The Anker 737 retained approximately 45% capacity after fully charging the ThinkPad

Phone and Tablet Charging

While laptop charging is the headline feature, most users will also rely on the Anker 737 for their smartphones and tablets.

iPhone 15 Pro Max Charging Test

Using the iPhone's native 27W fast charging capability:

From a single full charge, the Anker 737 can charge an iPhone 15 Pro Max approximately 4.8 times.

Samsung Galaxy S24 Ultra Charging Test

Samsung's flagship supports higher wattage charging, and the Anker 737 delivered:

Approximately 4.5 full charges from a fully charged Anker 737.

iPad Pro 12.9-inch M2 Test

The iPad Pro 12.9-inch with its larger 40.88Wh battery showed these results:

• 0% to 50%: 42 minutes
• 0% to 100%: 105 minutes
• Approximately 2 full charges from the Anker 737

Multi-Device Charging

One of the most practical features of the Anker 737 is its ability to charge up to three devices simultaneously. However, it's essential to understand how power is distributed across ports.

Power Distribution When Using Multiple Ports

Real-World Multi-Device Scenario Test

I simulated a realistic travel scenario: charging a MacBook Pro, iPhone, and Apple Watch simultaneously.

Setup:

• MacBook Pro 14-inch (USB-C1): 30% battery
• iPhone 15 Pro (USB-C2): 15% battery
• Apple Watch Series 9 (USB-A with adapter): 40% battery

Results after 30 minutes:

• MacBook Pro: 30% to 58% (+28%)
• iPhone: 15% to 72% (+57%)
• Apple Watch: 40% to 100% (fully charged)

The power bank dropped from 100% to 52% during this session, demonstrating the significant power demands of multi-device charging.

Smart Display and Features

The digital display on the Anker 737 is genuinely useful, not just a gimmick. Here's what it provides:

Display Information

1. Battery Percentage: Accurate to the single digit, updated in real-time
2. Input/Output Wattage: Shows current power flow for each active port
3. Time Remaining: Estimates time until full charge (when charging) or depletion (when discharging)
4. Temperature Warning: Displays if the unit is overheating

Additional Smart Features

Trickle Charging Mode: Double-click the power button to activate low-power mode for charging devices like wireless earbuds, smartwatches, and other accessories that require minimal current. Without this mode, the power bank might shut off thinking no device is connected.

ActiveShield 2.0 Safety: Anker's proprietary safety technology monitors temperature over 3 million times daily, adjusting power output to prevent overheating. During my testing, the power bank never became uncomfortably hot, even during 140W output.

PowerIQ 4.0: Automatically detects connected devices and delivers optimal charging speed, compatible with virtually all USB-C and USB-A devices.

Travel Considerations

For frequent travelers, the Anker 737 offers several advantages—but also has some limitations to consider.

Airline Compliance

The 86.4Wh capacity falls comfortably under the FAA's 100Wh limit for carry-on batteries. You don't need airline approval to bring it aboard, and you can pack it in carry-on luggage without any issues.

Portability Assessment

Pros for Travel:

• Airline compliant (86.4Wh < 100Wh limit)
• Replaces need for multiple power banks
• Can charge laptop and phone during entire flight
• Included travel pouch protects the device

Cons for Travel:

• Heavy at 632g (heavier than some ultrabooks)
• Bulky compared to phone-only power banks
• Requires space in carry-on

International Compatibility

The Anker 737 accepts any input voltage and works with any USB-C charger worldwide. When traveling internationally, you only need a plug adapter—no voltage converter required.

Comparison with Competitors

How does the Anker 737 stack up against its main competitors? Here's a detailed comparison:

Anker 737 vs. Anker Prime 250W

The Prime 250W offers higher capacity and output but costs more and sits right at the airline limit. The 737 is the better choice for frequent flyers who want a guarantee of no TSA hassles.

Anker 737 vs. Baseus 140W

The Baseus offers similar specs at a lower price point. However, Anker's superior build quality, better display, and stronger warranty make the 737 worth the premium for most users.

Anker 737 vs. Ugreen 145W

The Ugreen offers slightly higher wattage but exceeds the comfortable airline limit. The Anker 737's proven reliability and brand reputation give it an edge for users who prioritize peace of mind.

Who Should Buy the Anker 737?

Ideal Users

Remote Workers and Digital Nomads: If you work from coffee shops, co-working spaces, or anywhere without guaranteed power outlets, the Anker 737 provides genuine laptop-charging capability in a portable form factor.

Frequent Travelers: The airline-compliant capacity means no stress at security, while the high output keeps your devices charged during long flights and layovers.

Power Users with Multiple Devices: Anyone carrying a laptop, phone, tablet, and accessories will appreciate being able to charge everything from a single source.

Content Creators: Photographers and videographers who need to charge laptops, cameras, and phones on location will find the 140W output invaluable.

Who Should Look Elsewhere

Budget-Conscious Buyers: At $149, the Anker 737 is a premium product. If you only need to charge phones, a $30-40 power bank will serve you better.

Ultralight Travelers: At 632g, this power bank adds noticeable weight to your kit. If every gram counts, consider the lighter Anker 733 Power Bank.

iPhone-Only Users: Apple's 27W maximum charging means you won't benefit from the 140W capability. A smaller, cheaper power bank would be more practical.

Final Verdict

After extensive testing, the Anker 737 Power Bank earns its place as one of the best portable chargers available in 2026. It delivers on its core promise of laptop-level charging in a truly portable package.

Final Score: 4.7/5

The Anker 737 isn't for everyone—but for its target audience of laptop users who need reliable portable power, it's exceptional. The combination of genuine 140W output, intelligent power management, and Anker's proven reliability makes it the best 140W power bank available today.

If you regularly find yourself working away from outlets and need to keep a laptop running, the Anker 737 is worth every penny. For phone-only users or those on a tight budget, consider Anker's more affordable options.

Frequently Asked Questions

Can the Anker 737 charge a MacBook Pro while I'm using it?

Yes, absolutely. The 140W output is sufficient to charge a MacBook Pro 14-inch or 16-inch while you continue working. However, if you're running demanding applications (video editing, gaming), the charging speed will be slower as power goes to both running the system and charging the battery.

How long does it take to fully recharge the Anker 737 itself?

With a 140W charger (not included), the Anker 737 can fully recharge in approximately 1 hour. With a standard 65W laptop charger, expect about 2 hours. With a 30W phone charger, it takes approximately 3.5-4 hours.

Is the Anker 737 allowed on airplanes?

Yes. At 86.4Wh, the Anker 737 is under the FAA's 100Wh limit for carry-on batteries. No special approval is needed. Just remember it must be in your carry-on luggage, not checked bags.

Does the 140W output work with all devices?

No. The full 140W output requires devices that support USB Power Delivery 3.1 with Extended Power Range (EPR). Most current phones and older laptops don't support this. However, the power bank will still charge these devices at their maximum supported rate—you just won't hit 140W.

How many times can I charge my iPhone with the Anker 737?

Approximately 4.5-5 full charges for an iPhone 15 Pro Max, and about 5.5-6 charges for an iPhone 15. Actual results vary based on usage during charging and battery health.

Is the included USB-C cable good enough for 140W charging?

The included cable is rated for 100W, which is excellent for most use cases. However, to achieve the full 140W, you'll need a separately purchased USB-C cable that supports 140W power delivery with an eMarker chip.