The top pick for most people is the Anker 737 Power Bank (PowerCore 24K)—it packs 24,000mAh, delivers up to 140W USB-C PD for laptops, and has a clear display showing remaining charge and output. It avoids the fragility and bulk of built-in cables while still charging a MacBook Pro, Dell XPS, and iPhone at full speed. For a budget alternative, the Baseus 65W 20,000mAh offers great value without the display.
What to Look For
When choosing a power bank without built-in cables, focus on these specs:
- Power output (W): For laptops, you need at least 45W, ideally 65W or more. Phones only need 18-30W. Check the USB-C PD (Power Delivery) rating.
- Capacity (mAh or Wh): For laptops, look for 20,000mAh (72Wh) or higher. Phones can get by with 10,000mAh. Remember that 20,000mAh is roughly 72Wh, which charges a 60Wh laptop about 1.2 times.
- Ports: At least one USB-C PD port for laptops and one USB-A for older devices. Two USB-C ports are better if you charge multiple devices.
- Recharge speed: A power bank that charges itself at 60W+ is much more convenient than one that takes 10 hours.
- Size/weight: 20,000mAh units weigh around 400-500g. If you need something pocketable, consider a 10,000mAh model.
- Pass-through charging: Allows you to charge the power bank while it charges your devices—useful for travel.
Top Options
Anker 737 Power Bank (PowerCore 24K)
Strengths: 140W total output, 87W max for a single laptop, 24,000mAh capacity, and a smart digital display showing input/output wattage and remaining time. It charges a MacBook Pro 16� at full speed and can fast-charge an iPhone 15 Pro. The build quality is excellent.
Trade-offs: Pricey, and it’s heavy (about 630g). The display is nice but not essential.
Who it suits: Professionals who need reliable laptop charging on the go and want to see exactly how much power is flowing.
Baseus 65W 20,000mAh Power Bank
Strengths: A solid budget pick with 65W USB-C PD output, 20,000mAh capacity, and two USB-C ports plus one USB-A. It’s compact for its capacity and supports fast recharging (45W input).
Trade-offs: No display, and the 65W max means it won’t fully charge a 100W+ laptop at full speed, but it will still charge it slowly.
Who it suits: Students and travelers who need a reliable, affordable brick for both laptops and phones.
Zendure SuperTank Pro (26,800mAh, 100W)
Strengths: 100W USB-C PD output, 26,800mAh capacity, four USB-C ports, and a small OLED display. It can charge two laptops simultaneously at 60W each. The build is rugged and sleek.
Trade-offs: Expensive, and the display is small. It’s also quite heavy (about 570g).
Who it suits: Digital nomads with multiple high-power devices (e.g., laptop + tablet + camera) who need simultaneous fast charging.
RAVPower 20000mAh 60W PD Power Bank
Strengths: 60W USB-C PD output, 20,000mAh capacity, and a slim design (about 1.5cm thick). It has a USB-C and two USB-A ports, and supports pass-through charging. Often available at a good price.
Trade-offs: 60W is borderline for some larger laptops (like a 16-inch MacBook Pro) which may need 87W+. The display is just a basic LED indicator.
Who it suits: Those who want a slim, light power bank for a 13-inch laptop and phone, without needing a display.
Omnicharge Omni 20 (20,000mAh, 100W)
Strengths: 100W total output, 20,000mAh capacity, AC outlet (100-240V, 100W) for charging non-USB devices like a drone battery or camera charger. It also has a USB-C PD port and a display.
Trade-offs: Expensive and heavy (700g+). The AC inverter is inefficient, so you lose some capacity.
Who it suits: Photographers, drone pilots, and anyone who needs to charge non-USB gear in the field.
Nitecore NB20000 (20,000mAh, 45W)
Strengths: Ultra-lightweight (about 360g) thanks to a carbon-fiber shell. 45W USB-C PD output is enough for most 13-inch laptops. Two USB-A ports and one USB-C.
Trade-offs: 45W is too low for larger laptops. The price is high for the specs.
Who it suits: Hikers and minimalists who prioritize weight over raw power.
How to Choose
Start by checking your laptop’s charging wattage (look at the charger brick). If it’s 45W, a 45-60W power bank is fine. If it’s 65W, get a 65W or higher bank. For phones, anything 18W+ is fine.
Budget: If you’re under $50, the Baseus 65W is the best value. If you can spend $100+, the Anker 737 gives you the best balance of power, capacity, and display.
Weight vs. capacity: A 10,000mAh bank is pocketable but won’t fully charge a laptop. A 20,000mAh bank is a compromise. A 26,000mAh+ is a brick—only if you really need it.
Ports: If you have multiple devices, get at least two USB-C ports. If you have old micro-USB devices, keep a USB-A port.
Recharge speed: Look for a bank that accepts at least 45W input. Otherwise, it’ll take 6-8 hours to refill.
Frequently Asked Questions
Can I use a 65W power bank to charge a 100W laptop?
Yes, but the laptop will charge slower (or maintain the battery while in use). It won’t damage the laptop, but it may not keep up under heavy load.
Why avoid built-in cables?
Built-in cables are convenient but often short, fragile, and can’t be replaced if they break. They also add bulk and limit port orientation. Separate cables let you choose length and type (USB-C to Lightning, etc.).
How many times can a 20,000mAh power bank charge my phone?
Assuming a 3,000mAh phone battery and 85% efficiency, you get about 5 full charges. For a 5,000mAh phone, about 3 charges.
Is it safe to charge my laptop and phone at the same time?
Yes, most modern power banks manage power distribution. However, the total output is capped—so if you’re pulling 65W for the laptop, the phone may only get 15W. Check the specs for “total output.�
What does “pass-through� mean?
It means you can charge the power bank while it’s also charging your devices. This is useful when you have limited wall outlets.
Can I take a 20,000mAh power bank on a plane?
Yes, most airlines allow power banks up to 100Wh (about 27,000mAh) in carry-on luggage. The 20,000mAh units (72Wh) are fine. Always check with your airline.
Bottom Line
For most people, the Anker 737 is the best overall—it’s powerful, reliable, and the display is genuinely useful. If you’re on a budget, the Baseus 65W gives you 90% of the functionality at half the price. If you need to charge non-USB gear, the Omni 20 is the only option. Avoid built-in cables unless you absolutely need the convenience—they’re a compromise you don’t have to make.
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