Anker 737 vs Baseus 65W Power Bank

Most power bank spec sheets lead with milliamp-hours, but that number alone doesn’t tell you much. What actually predicts how many times you can charge a laptop is watt-hours, since Wh accounts for the voltage conversion happening inside the bank. The Anker 737 holds 86.4 Wh. The Baseus holds 74 Wh. A 2021 MacBook Pro 14-inch carries a 70 Wh battery, and once you factor in the usual 10 to 15% conversion loss, you’ll get roughly one full laptop charge from either bank. The Anker just leaves more room left over, whether that’s a second partial charge or topping off other devices at the same time.

The Anker 737’s 140W USB-C Power Delivery rating is real, and it shows up in actual charge times. USB-C PD negotiates in real time between the charger and the device, so a laptop only draws what it actually needs, up to the port’s maximum. That means the 737 hits full fast-charge speed with the current MacBook Pro (M2 and M3), the Dell XPS 13 and 15, the Lenovo ThinkPad X1 Carbon, the HP Spectre x360, and the Microsoft Surface Pro. The Baseus at 65W charges every one of those laptops too, just more slowly. A MacBook Air M2, with its 52.6 Wh battery and native 30W charging, actually charges at close to the same speed from either bank. The extra wattage on the 737 only really shows up with laptops built for 90W or 100W charging.

Airline carry-on rules apply to both banks the same way. The FAA and most international aviation authorities, under IATA guidelines, allow lithium-ion power banks in carry-on luggage up to 100 Wh without special approval, and up to 160 Wh with airline approval. Checked luggage is a flat no regardless of capacity. The Anker 737 at 86.4 Wh and the Baseus at 74 Wh both sit under that 100 Wh line, so neither needs paperwork at security. The mAh numbers on the box, 24,000 and 20,000, can trip up an agent who isn’t reading closely. Keep the product page or box handy showing the Wh rating. That’s the number that actually matters.

The 190g weight gap between these two is bigger than it sounds on paper. At 630g, the Anker 737 feels close to a hardcover book. At 440g, the Baseus feels more like a water bottle you stop noticing. Add a laptop, cables, and chargers to the bag. That gap compounds fast. The Anker’s digital percentage readout beats the Baseus’s single LED dot too. Knowing you’re at 23% is just more useful than guessing what one blinking light means.

Two questions settle this. Does your laptop accept more than 65W? Do you regularly need to charge two devices at full speed at once? If both answers are yes, the Anker 737 earns its spot in the bag. If your laptop is a MacBook Air, an ultrabook, or anything that caps out around 45 to 65W, or if you mostly charge a phone and only occasionally plug in a laptop, the Baseus 65W covers most of what you’ll actually use day to day, in a lighter package. Most first-time power bank buyers will be perfectly happy with the Baseus.