Anker 737 vs Anker Prime 220W

The Anker 737 and Anker Prime 220W are both flagship Anker power banks aimed at laptop travelers, and both clear the 100 Wh airline carry-on threshold. The difference between them is sharper than it looks: the 737 is a capacity-first bank, and the Prime 220W is a performance-first bank. The right choice depends on which constraint you hit first — running out of charge or charging too slowly.

Capacity is the 737's sole but important advantage. Its 24,000 mAh (88.8 Wh) holds roughly 20% more energy than the Prime's 20,100 mAh (72.36 Wh). In practical terms that is approximately one additional full smartphone charge, or an extra 10–15% of a laptop battery. For a solo traveler on a two-day trip who recharges the bank each night, the gap is nearly invisible. For someone on a longer stretch without reliable outlets — a camping trip, a full conference day hopping between sessions, a long international flight — the 737's extra energy reserve extends the window before you run dry.

Output speed is where the Prime 220W makes a decisive argument. Each USB-C port on the Prime delivers up to 140W independently, and the combined ceiling is 220W — meaning a 140W MacBook Pro and a second device can both charge at full speed simultaneously. The 737 peaks at 140W total, with approximately 60W available per USB-C port in shared use. For a MacBook Air (30–45W) or a standard laptop, the 737 is perfectly adequate. For a MacBook Pro 16" or a high-performance Windows laptop with a 96W to 140W charger, the Prime's higher per-port ceiling delivers a noticeably faster single-device charge.

The input speed difference is easy to overlook but practically important. The Prime accepts up to 100W via USB-C, recharging itself in roughly 45 minutes from a 100W wall charger. The 737's 65W input takes significantly longer to recover the same capacity. This matters most for travelers who plug in during a layover, a meeting break, or a hotel check-in and then immediately unplug — the Prime catches up faster in short charging windows.

Weight and display round out the comparison. The Prime at 1.12 lbs (510 g) is 270 g lighter than the 737 at 1.72 lbs (780 g) — a meaningful difference for minimalist packers. Its smart display and Bluetooth app show real-time output wattage, remaining percentage, and port-level distribution; the 737's LED indicator gives a rough quartile reading. If you have a high-power laptop and want fast charging and faster self-recharging in a lighter package, the Prime 220W is the pick. If raw capacity and the extra headroom it provides over multiple days is the priority, the 737 holds more charge.