Unveiled towards the end of last year as part of the expansive GaNPrime lineup, the Anker 737 Power Bank is unique in its offering: it's the lone wolf in the power bank market boasting a 140W Power Delivery (PD) using the latest PD 3.1 specification. If you're toting around a 16-inch MacBook Pro that gulps 140W, or another laptop with a similar appetite for power delivery, this Anker device is in your wheelhouse.

Specification Snapshot

• Product: Anker 737 Power Bank (PowerCore 24K)
• Rating: Yet to be rated
• Price: £139.99 - Buy on Amazon
• Ultra-Powerful Two-Way Charging: Power Delivery 3.1 and bi-directional tech for rapid recharging of the portable charger or a 140W ultra-powerful charge for your devices.
• High Capacity & Longevity: With a 24,000mAh battery that offers twice the lifespan, it can juice up an iPhone 13 nearly five times and a 2021 iPad Pro 12.9" about 1.3 times.
• Smart Digital Display: Shows power output, input, and estimated recharge time for the power bank.

Port Configuration

This powerhouse comes with three USB ports in total, which frankly, seems a bit parsimonious for the price tag.

• USB-C 1: 140W PD 3.1 for both output and charging
• USB-C 2: 140W PD 3.1 output only
• USB-A: 18W

In terms of voltages, the spec sheet gets technical with support for Programmable Power Supply (PPS), making it a fitting companion for the Samsung Galaxy S22 Ultra.

Design & Display

I'm usually not one to wax lyrical about power bank aesthetics, but the digital display on this device deserves a hat-tip. It's a cornucopia of data— from the output and input power to battery temperature, health, and even the number of charge cycles— helping you keep a vigilant eye on the health of your device.

Advertised Capacity vs Real-World Performance

Anker's claims of a 24,000mAh (21.6Vdc across six 4000mAh cells) should always be taken with a grain of salt. In reality, due to voltage conversions, the effective 5V output capacity stands at around 17,280mAh and 86.4 Wh. And if you're like me, you'll want numbers from the real world. So, I put it through its paces charging my Realme GT Neo 3, and the numbers nearly corroborated Anker's claims.

Testing Input & Output

While Anker claims a 140W input, in my tests using the Ugreen Nexode 140W GaNFast charger, the device capped at around 120W. Yes, it's shy of the claim but still ridiculously quick. The type of cable does matter, though. With a 100W Ugreen cable, I hit 90W, and with a 60W Anker cable, it was 53.2W.

Price & Alternatives

Retailing at an RRP of £139.99, and often available at discounted rates, the Anker 737 stands alone in its league.

If you're bargain hunting, there are alternative 100W PD power banks there are some decent options including:

The imuto X6G-27200 offers a 27,200mAh capacity at a lower price point of £99.99, but misses out on the smart display.

On the higher end, Zendure's Supertank Pro offers a comparable performance but for a steep £169.99.