How We Tested
We tested each power bank by measuring actual capacity delivery, charging speeds with various devices, heat generation during extended use, and overall build quality. We also evaluated portability and airline compliance for travel.
Anker 737 Power Bank (PowerCore 24K)
The Anker 737 is our top pick for its impressive 140W output that can charge MacBooks, iPads, and phones at full speed. The 24,000mAh capacity is just under airline limits (100Wh), making it travel-friendly. The built-in smart display shows remaining capacity, output wattage, and estimated time remaining—features you won't find at this price elsewhere.
- 140W output charges laptops at full speed
- Smart display with real-time stats
- Airline-safe capacity (under 100Wh)
- Charges 3 devices simultaneously
- Heavy at 1.4 lbs
- Premium price
Anker 622 MagGo Magnetic Battery
For iPhone users, the Anker 622 MagGo magnetically attaches to your phone and charges wirelessly. The built-in kickstand is perfect for desk use or video calls. At 5,000mAh, it provides roughly one full iPhone charge, making it ideal for daily carry when you need a quick top-up.
- MagSafe compatible for easy attachment
- Built-in foldable kickstand
- Slim and pocket-friendly
- No cables needed
- iPhone/MagSafe only
- Slower wireless charging (7.5W)
- Limited capacity
Baseus 65W Power Bank 20000mAh
The Baseus 65W offers laptop charging capability at nearly half the price of our top pick. Its 65W USB-C output can power most ultrabooks, while the 20,000mAh capacity provides substantial backup. The LED display shows battery percentage and charging status clearly.
- Laptop charging at budget price
- 65W USB-C output
- Large 20,000mAh capacity
- Dual USB-C ports
- Build quality not as premium as Anker
- May not charge high-power laptops
Anker PowerCore Slim 10000
If you just need reliable phone charging at an affordable price, the PowerCore Slim 10000 delivers. Its slim profile slides easily into pockets or bags, and 10,000mAh provides 2-3 full phone charges. The 18W PowerIQ output ensures fast charging for most smartphones.
- Excellent value
- Slim, pocket-friendly design
- Reliable Anker quality
- Fast 18W output
- Won't charge laptops
- Only one output port
Mophie Powerstation XXL
Mophie's Powerstation XXL features premium fabric-wrapped construction and 45W USB-C PD output for charging laptops. The 20,000mAh capacity handles multiple device charges, and the build quality is noticeably superior with soft-touch materials that resist fingerprints and scratches.
- Premium build quality
- 45W laptop charging
- Fabric finish resists wear
- 2-year warranty
- Expensive for specs
- Lower wattage than competitors
What to Look for in a Power Bank
Capacity (mAh)
A 10,000mAh bank charges most phones 2-3 times. For laptops, look for 20,000mAh or more. Note that airlines restrict batteries to 100Wh (about 27,000mAh at 3.7V) for carry-on.
Output Power (Watts)
Phone charging needs 18-30W for fast charging. Laptop charging requires 45-140W depending on your device. Check your laptop's charger wattage to ensure compatibility.
Ports
USB-C with Power Delivery (PD) is essential for fast charging modern devices. USB-A ports are useful for older accessories. Multiple ports let you charge several devices at once.