Laptop charging: wattage first, capacity second
The Best Power Banks for Laptops (2026)
The best laptop power banks: high-wattage USB-C output that actually charges ultrabooks and workstations.
Our top picks at a glance
Best for laptops
Anker 737 Power Bank (PowerCore 24K)Travelers and remote workers who need to charge laptops, tablets, and phones from a single brick.
Best value for laptops
Baseus 65W Power Bank 20,000mAhCommuters and students who need laptop-capable charging without flagship cost.
For laptop charging, wattage matters more than capacity. The Anker 737 delivers 120 W, enough for ultrabooks and most larger laptops, with 24,000 mAh behind it. The Baseus 65W covers typical ultrabooks for less money. The Nitecore NB10000 Gen 3 and Anker 622 are phone-class banks and are not laptop chargers, which is why they are not picked here.
The picks, ranked
| Pick | Capacity | Total output | Display | Buy |
|---|---|---|---|---|
| Best for laptopsAnker 737 Power Bank (PowerCore 24K) | 24,000 mAh | 120 W | Smart digital display (power in/out, time estimates) | Check price |
| Best value for laptopsBaseus 65W Power Bank 20,000mAh | 20,000 mAh | — | Digital display | Check price |
Best for laptops
Anker 737 Power Bank (PowerCore 24K)
A 24,000mAh high-wattage bank with a smart display for laptops and phones.
Strengths
- 120 W total output charges most laptops
- Smart display shows real-time wattage and time estimates
- 24,000 mAh capacity covers multiple devices
- Two USB-C ports plus USB-A for legacy devices
Limitations
- Heavy and bulky for pocket carry
- Premium price tier
- Takes a long time to recharge itself at full capacity
What owners report
Commonly praised
- It charges a laptop over USB-C at full speed
- The built-in display shows the remaining charge and live wattage
- It feels sturdy and well finished for the price
Common complaints
- It is heavy and thick for a pocket or small bag
- It drains noticeably faster when pushing high wattage to a laptop
- The USB-A port shows a tiny phantom output and some owners find this confusing
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Capacity | 24,000 mAh |
|---|---|
| Total output | 120 W |
| Display | Smart digital display (power in/out, time estimates) |
| Ports | 2x USB-C, 1x USB-A |
| Best for | Laptop, tablet, and phone charging |
Best for: Travelers and remote workers who need to charge laptops, tablets, and phones from a single brick.
Skip if: You want the lightest pocket carry, only charge a phone overnight, or need the lowest price.
Best value for laptops
Baseus 65W Power Bank 20,000mAh
A 20,000mAh 65W bank that covers most ultrabooks at a mid-range price.
Strengths
- 65 W USB-C output handles most ultrabooks
- 20,000 mAh is a full laptop charge plus phone top-ups
- Digital display for remaining capacity
- Mid-range price tier
Limitations
- Not enough wattage for high-power gaming laptops
- Heavier than 10,000 mAh pocket banks
What owners report
Commonly praised
- It charges a laptop and a phone at the same time
- The digital display shows the remaining percentage
- Good capacity for the price, and it often goes on sale
Common complaints
- It is large and heavy compared with newer packs of the same capacity
- Some owners measure less than the full 65 watts in practice
- Older versions include a micro-USB input, which feels dated
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Capacity | 20,000 mAh |
|---|---|
| USB-C output | 65 W |
| Display | Digital display |
| Best for | Ultrabook, tablet, and phone charging |
Best for: Commuters and students who need laptop-capable charging without flagship cost.
Skip if: You need 100W-plus charging for larger laptops or the lightest possible carry.
Questions, answered
How many watts does my laptop need?
Check your laptop's original charger: ultrabooks usually ship with 45 to 65 W adapters, and larger laptops with 90 W or more. A bank should match or exceed that wattage for full-speed charging; a lower-wattage bank may charge slowly or only while the laptop sleeps.
Will any USB-C bank charge my laptop?
No. The bank must support USB-C Power Delivery at a wattage your laptop accepts. Phone-class banks with 18 to 30 W output will not meaningfully charge most laptops, even if the plug fits.
Is it safe to charge a laptop from a power bank?
Yes, when both support USB Power Delivery. PD negotiates voltage and current safely between the devices. Use a cable rated for the wattage involved; a thin cable can bottleneck a 100 W charge.