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A 24,000 mAh USB-C PD 3.1 power bank that pushes a class-leading 140 W from a single port, recharges itself in about 52 minutes, and adds a smart digital display reading live input/output watts, charge percentage and estimated time.
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Quick Specs
A 140 W, 24K mAh brick that fast-charges laptops as readily as phones and tells you exactly what it's doing.
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| Capacity | 24,000 mAh |
|---|---|
| Energy | 86.4 Wh (≈ 3.6 V nominal) |
| Cell Type | Lithium-ion |
| Airline Status | Carry-on safe (under 100 Wh) |
| Phone Recharges | ≈ 4–5 full (typical 4,500 mAh phone) |
| Max Total Output | 140 W |
|---|---|
| USB-C1 Output | Up to 140 W (PD 3.1) |
| USB-C2 Output | Up to 140 W (shared budget) |
| USB-A Output | Up to 18 W |
| Max Input (USB-C) | Up to 140 W |
| Recharge Time | 0–100% in ≈ 52 min |
| Protocols | USB PD 3.1, PPS |
| USB-C Ports | 2 (USB-C1, USB-C2) |
|---|---|
| USB-A Ports | 1 |
| Total Ports | 3 |
| Input Port | USB-C (bidirectional) |
| Bundled Cable | 140 W USB-C to USB-C |
| Weight | ≈ 630 g |
|---|---|
| Dimensions | ≈ 155 × 55 × 50 mm |
| Display | Smart digital screen |
| Display Readouts | Live input/output W, %, est. time |
| Finish | Matte black housing |
| Colors | Black |
| Protection Suite | ActiveShield 2.0 |
|---|---|
| Temperature Monitoring | Real-time, multi-point |
| Safeguards | Over-current, over-voltage, short-circuit |
| Surge Protection | Yes |
| Certification | CE, FCC, RoHS |
Configuration
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The Anker 737 is one of the most capable portable batteries you can carry onto a plane. A single USB-C port delivers a true 140 W, enough to fast-charge a 16-inch MacBook Pro, and the 24,000 mAh cell still squeaks under the 100 Wh airline limit at 86.4 Wh. The smart display is genuinely useful, reporting real-time input and output wattage, remaining percentage and an estimated time. It recharges itself in under an hour over USB-C. The trade-offs are weight and price: at ~630 g this is a bag battery, not a pocket one, and you'll want the bundled 140 W cable to hit peak speeds. For anyone who charges a laptop on the move, it's an easy recommendation.
Charges my MacBook on the train
The 140 W output is the real deal — my 14-inch MacBook Pro charges almost as fast as it does off the wall brick. The display telling me live watts and time-to-full is more useful than I expected. It is heavy, but for travel days it earns its place in the bag.
Self-recharge speed is incredible
Going from empty to full in under an hour means I can top it off while I shower before a flight. Capacity is huge — gets me through long-haul trips charging phone, earbuds and tablet. Just remember to use the included thick cable for full speed.
Powerful but bulky
No complaints about performance — it does everything Anker claims. The only thing to be aware of is the weight and size; this is not something you slip in a jacket pocket. The USB-A port is also much slower than the USB-C ports, so plan around that.
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Yes. A single USB-C port delivers up to 140 W via USB Power Delivery 3.1, which is enough to fast-charge a 16-inch MacBook Pro and most USB-C laptops. To reach the full 140 W you must use a 140 W-rated USB-C cable — Anker bundles one in the box.
Over USB-C the bank itself recharges at up to 140 W, taking the 24,000 mAh cell from 0 to 100% in roughly 52 minutes with a suitable 140 W wall charger and cable. A lower-wattage charger works but takes proportionally longer.
Yes. Its 24,000 mAh capacity equals about 86.4 Wh, which is under the 100 Wh limit most airlines set for carry-on lithium batteries, so it is permitted in hand luggage. Always check your specific airline's policy before flying.
The smart display reports real-time input and output wattage, the remaining battery percentage and an estimated time to full charge (when charging) or time until empty (when discharging), so you can see exactly how fast a device is charging.
Three. There are two USB-C ports and one USB-A port. USB-C1 alone can deliver the full 140 W; when multiple ports are in use the total output is shared across them, and the USB-A port is capped at 18 W.
Roughly four to five full charges for a typical 4,000–5,000 mAh smartphone, after accounting for conversion losses. For a laptop it provides a substantial top-up rather than multiple full charges, depending on the laptop's battery size.
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