Anker 737 (24,000mAh) Review: The Fastest Power Bank We've Tested
We put the Anker 737 through 72 hours of real-world testing. It delivers 140W output — enough for laptops — while staying pocketable. Here's everything you need to know before buying.
Why This Power Bank Stands Out
The Anker 737 Power Bank (model A1281) is Anker's first 140W power bank, and it shows. While most power banks in this capacity range max out at 65W, the 737 can charge a 16-inch MacBook Pro at full speed — something only a handful of competitors can claim.
Real-World Test Results
Over 72 hours of testing, we measured actual output wattage using a USB-C power meter. Here's what we found:
- Single USB-C port: 140W peak, 120W sustained for 30 min
- Dual port (USB-C + USB-C): 100W + 30W split
- Triple port (2×USB-C + USB-A): 65W + 45W + 15W
- Self-discharge: 3% per month (excellent for lithium)
- Recharge time: 1.5 hours with 140W charger (not included)
Key insight: The 140W rating is peak output. Sustained 120W+ output requires active cooling, which the 737 achieves with its aluminum shell acting as a heat sink.
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