The Anker 737 is a compelling option when you need a power bank for a compatible USB-C laptop as well as a phone. Its 24,000mAh capacity, digital display, and up-to-140W output give it a different role from a pocket-sized phone charger. Confirm your device and cable requirements before buying it for maximum-power charging.
What makes it worth a look
- Laptop-capable USB-C output makes this more versatile than a basic phone power bank.
- A digital display gives useful charging information at a glance.
- Multiple ports help when your everyday carry includes more than one device.
Start with what needs charging
A power bank makes the most sense when it matches the devices you actually carry. If you only need a late-afternoon phone top-up, a smaller model may serve you better. The 737 becomes more persuasive when your laptop is part of the problem.
The headline wattage is a compatibility question
Anker states that reaching 140W requires a PD 3.1-compatible device and cable. A higher output specification does not force a device to charge at that speed. Check the charging requirements of your laptop, then choose the power bank and cable as a system.
Capacity is not a recharge count
The capacity figure is useful for comparing battery packs, but it is not the amount that arrives unchanged at your device. Conversion losses and the device battery both affect the result. We would avoid choosing any power bank from an exact recharge promise without knowing the test conditions.
A sensible role in your bag
This is a useful kind of backup for a laptop-focused day away from an outlet. For a desk that already has reliable power, a suitable wall charger may be the simpler purchase. Match the product to the routine instead of adding battery capacity you rarely carry.
Useful tradeoffs
- Its large-capacity design is a bag accessory rather than a minimal pocket charger.
- Reaching 140W requires a compatible PD 3.1 device and cable.
- Shared charging and conversion losses affect the power and usable energy available to devices.
The details that matter
- Model
- A1289 / PowerCore 24K
- Capacity
- 24,000mAh, manufacturer rating
- Maximum output
- Up to 140W
- Ports
- Two USB-C; one USB-A
- Display
- Digital charging information
- Maximum-power requirements
- Compatible PD 3.1 device and cable
Specifications reflect the manufacturer’s published information. Performance figures are manufacturer ratings, not TechGrounded measurements.
Before you choose
Read our charging buying guide → for the questions that matter beyond the spec sheet.
Your questions, answered.
Can the Anker 737 charge a laptop?
It can charge compatible USB-C laptops. Confirm the laptop power requirements and supported USB Power Delivery profiles before buying.
Why might the Anker 737 charge below 140W?
The device, cable, battery state, and use of multiple ports can affect output. Anker specifies a compatible PD 3.1 device and cable for reaching 140W.
Is a 24,000mAh power bank necessary for a phone?
Not always. A smaller power bank can be a better fit if you only need occasional phone top-ups and prioritize low bulk.
Source checked October 19, 2026. Photography: Anker. Our editorial standards.
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