Charging a laptop away from an outlet? Buy the Anker 737 Power Bank (PowerCore 24K). Its 24,000mAh capacity and 140W two-way Power Delivery 3.1 output are built for laptops and multi-device days. Want a phone bank that disappears into a pocket or snaps onto an iPhone? Buy the Anker MagGo Power Bank (10K, Slim). It trades raw output for a 10,000mAh magnetic Qi2 design with 15W wireless and 30W USB-C charging. Check the exact variant on the Anker 737 listing before ordering.
The short answer by case
- Laptop, tablet plus phone on travel days: the Anker 737 — 24,000mAh, three ports, and a smart display showing input/output power and recharge-time estimates.
- Daily iPhone top-ups with minimal bulk: the MagGo 10K Slim in Black — 4.09 x 2.78 x 0.58 inches, magnetic snap for iPhone 12 through 16, up to 1.8 charges for an iPhone 15 Pro.
- Both devices, one purchase: only the 737 covers a laptop; pair it with the MagGo only if you want a second, pocketable phone bank.
How they compare on the criteria that matter
| Criterion | Anker 737 (PowerCore 24K) | MagGo 10K Slim |
|---|---|---|
| Capacity (nominal) | 24,000mAh; listed as 4.13 iPhone 16 Pro or 1.33 13-inch iPad Pro (2024) charges | 10,000mAh; Anker notes roughly 5,500-6,500mAh of usable output after conversion losses |
| Peak output | 140W via Power Delivery 3.1 (two-way: fast in and out) | 30W max over USB-C; 15W max magnetic wireless |
| Ports | Three ports: two USB-C plus one USB-A | One USB-C port plus a magnetic wireless pad |
| Size story | Backpack-grade bank with a smart display | 0.58 x 2.78 x 4.09 inches; pocket and snap-on use |
| Phone fit | Cabled charging for iPhone, Samsung, MacBook and more | Magnetic alignment designed for MagSafe iPhones (12/13/14/15/16); Android phones need a magnetic Qi2-compatible case for a reliable snap |
| In the box | Bank with display; 140W recharge needs a 5A cable and 140W charger | 60 cm USB-C to USB-C cable included |
Anker 737: the laptop-day bank
The 737 is the only one of the two that can feed a laptop at full-tilt USB-C wattage: 140W output over Power Delivery 3.1, with two USB-C ports and a USB-A port for a third device. The smart display reports real-time input/output power and estimates recharge time, so you can see whether you are actually drawing laptop-class power. Anker documents 24,000mAh with 4.13 iPhone 16 Pro charges or 1.33 charges of a 2024 13-inch iPad Pro.
Drawbacks. The full 140W requires both a PD 3.1-capable cable and a PD 3.1-input device such as the 2021 16-inch MacBook Pro; without that chain you get less. The always-on display and controller draw about 0.36W, roughly 15 percent of the charge in 24 hours, so switch the screen off when the bank sits idle. It is a bag bank, not a pocket bank. See the exact Anker 737 variant.
MagGo 10K Slim: the pocket phone bank
The MagGo 10K Slim (Black, model A1664) snaps magnetically onto MagSafe iPhones and delivers up to 15W wireless or 30W wired over its USB-C port, which also accepts up to 30W input. Anker lists up to 1.8 charges for an iPhone 15 Pro from the 10,000mAh cell and states that conversion losses leave about 5,500-6,500mAh of usable output. The matte body with a metal frame is aimed at everyday carry rather than laptop duty.
Drawbacks. 15W wireless will always trail a 30W+ cabled charge, and the magnetic snap is iPhone-first: many Android phones will not attach reliably without a magnetic Qi2-compatible case. Treat the 10,000mAh figure as nominal; plan around the usable range above. See the exact MagGo 10K Slim variant.
Which should you buy?
- Buy the Anker 737 if any device you must charge needs more than 30W, if you charge two or three devices at once, or if the display's power readouts help you manage a travel day.
- Buy the MagGo 10K Slim if your heaviest load is an iPhone (12 through 16) plus earbuds, and you value snap-on wireless over cables and wattage.
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Sources
- Anker 737 Power Bank (PowerCore 24K) official specifications
- Anker 737 Amazon US listing (exact variant)
- Anker MagGo Power Bank (10K, Slim) official specifications
- Anker MagGo 10K Slim Amazon US listing (Black variant)