“24,000mAh, 140W across two USB-C ports and one USB-A simultaneously, GaNPrime, built-in wall plug, LCD displaying live wattage and battery percentage, TSA carry-on approved. Charges a MacBook Pro from empty to 80% in 43 minutes. At $149.99 it is the power bank that makes every charging scenario on the road a non-issue.”
— The Quiet Standard Editorial Team
The power bank market sorted itself into two categories when USB-C Power Delivery arrived: the large number of banks that claim high wattage without delivering it, and the small number that do exactly what they specify. The Anker 737 is in the second category. 140 watts of output is a number that matters: it is the amount required to charge a MacBook Pro 14-inch at full speed, to keep a laptop running while simultaneously charging from the bank, and to charge two high-power USB-C devices at full speed concurrently without throttling either. 140W total, distributed as 65W from USB-C1 plus 65W from USB-C2 plus 10W from USB-A, simultaneously if needed.
The GaNPrime technology inside the 737 is Anker’s third-generation Gallium Nitride circuit design, which allows higher power density at lower heat output than silicon-based circuits. This is why the 737, despite carrying 24,000mAh and 140W capability, is compact enough to qualify as TSA-approved carry-on luggage. Power banks above 100Wh (approximately 27,000mAh at 3.7V) are not permitted on aircraft; the 737 at 24,000mAh (88.8Wh) is within the limit. The built-in foldable wall prongs allow the bank to charge from a wall socket without a separate cable — plug it in, charge it, unplug it, carry it. Up to 65W input via the wall plug, full recharge in approximately 2.5 hours.