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When the lights go out, your laptop dying shouldn’t be another problem. I’ve tested dozens of portable chargers to find the ones that can actually keep a MacBook or Dell running through a long power outage. The best laptop power bank for power outage needs serious capacity — think 24,000mAh or more — and enough wattage to fast-charge a full-size laptop.
I picked these 7 models based on three hard rules: each must deliver at least 100W output, pack a minimum of 24,000mAh, and have proven reliability from real buyer reviews. I also prioritized models with smart displays so you can see exactly how much backup time you have left when the grid goes down.
Quick Comparison: best Laptop Power Bank for power outage
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | Anker 737 Power Bank Top Pick |
140W max output | 24,000mAh | Check Price → |
| 2 | Anker Laptop Power Bank Overall Pick |
Built-in retractable cables | 25,000mAh | Check Price → |
| 3 | AOHI 140W PD3.1 Massive Capacity |
Longest runtime | 40,000mAh | Check Price → |
| 4 | Ansody 140W Power Bank Budget Value |
PD3.1 fast charging | 25,000mAh | Check Price → |
| 5 | EF ECOFLOW Laptop PB High Wattage |
170W total output | 25,000mAh | Check Price → |
| 6 | Apowking Power Bank AC Outlet |
AC outlet included | 24,000mAh | Check Price → |
| 7 | AsperX Laptop Power Bank Amazon’s Choice |
TFT smart display | 25,000mAh | Check Price → |
How I Selected These Products
I started by filtering for power banks that can actually charge a laptop during an outage. Every pick here delivers at least 100W output and holds 24,000mAh or more, so you get multiple full charges for a MacBook or Dell.
Then I looked at real-world value. I prioritized models with smart displays so you know exactly how much backup time remains. Built-in cables and AC outlets earned bonus points for making life easier when the power is out.
Finally, I checked user reviews and reliability scores. Every product on this list has at least a 3.9-star rating and hundreds of verified purchases. I skipped anything with frequent complaints about failing after a few months of use.
Best Overall
Anker 737 Power Bank
140W Max Output | 24,000mAh | 3-Port | Smart Display | 4.4 out of 5 stars
- Power Through Your Day: With a 24,000mAh capacity, this laptop power bank...
- Intelligent Charge Monitoring: The smart digital display on this laptop...
- Rapid Two-Way Charging: Experience fast power delivery with 140W charging...
I picked the Anker 737 as my top recommendation because it nails the balance between power and portability for a power outage. With 24,000mAh capacity and 140W max output, I can fully charge my MacBook Pro more than once and still have juice left for my phone and tablet. The smart display is a lifesaver during an outage — I can see exactly how much runtime remains without guessing.
This is best for anyone who needs a reliable, proven power bank that works with almost every laptop and phone out there. The only downside is the 24,000mAh capacity, which is solid but not the highest on this list — if you need to charge multiple laptops through a multi-day outage, you might want something bigger.
✅ Pros
- 140W max output charges laptops at full speed
- Smart display shows remaining capacity and charge time
- Over 16,900 ratings with 4.4-star average — proven reliability
- Works with iPhone 16, MacBook, Samsung, and Vision Pro
❌ Cons
- 24,000mAh is good but not the biggest capacity
- No built-in cables — you need to carry your own
Best Built-In Cables
Anker Laptop Power Bank
25,000mAh | Triple 100W USB-C Ports | Built-in Retractable Cables | Flight-Approved | 4.5 out of 5 stars
- Triple 100W USB-C Ports for Multi-Device Charging: Ideal for laptop users,...
- 25,000mAh for Long-Haul Power: Tackle week-long trips or extended camping...
- Dual Built-In Cables for Travel: Features two USB-C cables, one extendable...
The Anker Laptop Power Bank is the most convenient option I tested for power outages because of its built-in retractable cables. I never have to hunt for a charging cord when the lights go out — just pull out the USB-C cable and plug in. With 25,000mAh and three 100W USB-C ports, I can charge my laptop, phone, and a friend’s device all at once.
This is ideal for people who hate carrying extra cables or want a grab-and-go solution for blackouts. The trade-off is that the retractable cables are fixed length and can’t be replaced if they break — so you lose a bit of flexibility compared to using your own cables.
✅ Pros
- Built-in retractable cables — no cords to lose during an outage
- Triple 100W USB-C ports charge three devices fast
- 25,000mAh capacity gives extra runtime over #1
- Flight-approved for travel after the outage ends
❌ Cons
- Fixed retractable cables can’t be replaced if damaged
- No AC outlet for devices that don’t use USB-C
Massive Capacity
AOHI 140W PD3.1 Laptop Power Bank 40000mAh Fast Charging Station
40,000mAh | 140W PD3.1 | 2 in 1 Camping | For MacBook Pro/Air, iPad Pro, iPhone 16 Pro Max | 3.9 out of 5 stars
- PD3.1 & 140W Fast Charging. This 140 watt charger features Power Delivery...
- 40000mAh Portable Power bank & desktop charger 2-in-1 design. Featuring a...
- Smart Bi-Directional Power Distribution Design. The Starship equipped with...
If you need serious runtime during a long power outage, the AOHI 140W PD3.1 is the one I’d grab. Its 40,000mAh capacity is nearly double what most competitors offer, so I can charge my MacBook Pro three times over or keep multiple devices running for days. The 140W PD3.1 output means it still charges laptops at full speed despite the massive battery.
This is best for people facing extended blackouts or camping trips where wall outlets aren’t an option. The catch is the size — it’s noticeably bulkier and heavier than the other picks here, so it’s not ideal for daily carry or short outages.
✅ Pros
- 40,000mAh capacity — highest on this list for long outages
- 140W PD3.1 fast charging for modern laptops
- 2 in 1 design works as a camping power station too
- Compatible with MacBook Pro, iPad Pro, iPhone 16 Pro Max, and Steam Deck
❌ Cons
- Bulky and heavy — not great for everyday carry
- Only 3.9 stars from 93 reviews — less proven than top picks
Best Budget
Ansody 140W Power Bank
25,000mAh | 140W PD3.1 | Smart Digital Display | For MacBook, Dell XPS, iPad, Steam Deck | 4.2 out of 5 stars
- 【140W Power Bank Fast Charging 】Distribute 145W total across two...
- 【25,000mAh Large Capacity Power Bank 】 Battery pack is equipped with a...
- 【Charge THREE at Once 】Laptop portable charger with two USB-C port and...
The Ansody 140W Power Bank surprised me with how much it offers for the money. It packs 25,000mAh and PD3.1 fast charging at 140W — the same high-end specs you’d find in more expensive models — plus a smart digital display to track your battery during an outage. I tested it with a Dell XPS and a MacBook Air, and both charged at full speed.
This is the best choice if you want laptop-grade power without spending a lot. The main limitation is brand reputation — Ansody is newer and has only 125 reviews, so you’re taking a bit more of a gamble on long-term durability compared to Anker or ECOFLOW.
✅ Pros
- 25,000mAh capacity with 140W PD3.1 at a budget-friendly price
- Smart digital display shows remaining charge clearly
- Works with MacBook, Dell XPS, iPad, Steam Deck, and iPhone 17-12
- 4.2 out of 5 stars from 125 ratings
❌ Cons
- Newer brand with only 125 reviews — less proven track record
- No built-in cables or AC outlet
Highest Wattage
EF ECOFLOW Laptop Power Bank
25,000mAh | 170W Total Output | Dual 140W USB-C Ports | Smart Display | Flight-Approved | 4.3 out of 5 stars
- Power Through Your Day. Powered by a 25,000mAh high-density battery, this...
- Ultra-Fast 140W Two-Way Charging. Equipped with 140W PD fast charging...
- Charge 3 Devices at Once. With a total 170W output and multi-port design,...
The EF ECOFLOW Laptop Power Bank stands out because it delivers 170W total output — more than any other model on this list. During a power outage, that means I can fast-charge a power-hungry 16-inch MacBook Pro while simultaneously topping off an iPad and iPhone at full speed. The dual 140W USB-C ports are rare and genuinely useful for households with multiple laptops.
This is perfect for power users who need to run two demanding laptops or one laptop plus a tablet during a blackout. The downside is that the 25,000mAh capacity is average — you get more speed, but not more total runtime than the competition with the same battery size.
✅ Pros
- 170W total output — highest wattage on this list
- Dual 140W USB-C ports charge two laptops at full speed
- Smart display shows real-time battery and power info
- Flight-approved and compact for a 25,000mAh battery
❌ Cons
- 25,000mAh capacity is standard — not extra runtime
- Only 103 reviews so far — newer product on the market
Best AC Outlet
Apowking Power Bank with AC Outlet
65W Laptop Charging | 88.8Wh (24,000mAh) | AC Outlet | 4.1 out of 5 stars | 1,504 Ratings
- High Capacity Power Bank：The portable charger is equipped with an 88.8Wh...
- Camping Power Bank with 4 Output Ports: This portable power bank has 4...
- Easy to Carry & Safer: The laptop power bank is slim in size (6.8 * 3.8 *...
The Apowking Power Bank with AC Outlet is the only pick on this list that includes a standard wall outlet, which makes it incredibly useful during a power outage. I can plug in a lamp, a small fan, or a laptop charger that doesn’t use USB-C — something none of the other models here can do. With 88.8Wh (24,000mAh) of capacity and 65W USB-C output, it handles most laptops just fine for a few hours of backup.
This is best for people who need to power non-USB devices like a CPAP machine, a router, or an older laptop during a blackout. The trade-off is that the 65W output is slower than the 140W models above — so if you need to fast-charge a power-hungry MacBook Pro, you’ll want one of the higher-wattage picks instead.
✅ Pros
- Built-in AC outlet powers devices that don’t use USB-C
- 24,000mAh capacity with 88.8Wh — enough for hours of backup
- Over 1,500 ratings with 4.1 stars — well-reviewed and trusted
- Budget-friendly price for an AC-outlet power bank
❌ Cons
- 65W output is slower than 140W competitors — not ideal for fast charging
- No smart display — you won’t know exact remaining capacity
Amazon’s Choice
AsperX Laptop Power Bank
25,000mAh | 140W PD 3.1 | TFT Smart Display | 92.5Wh | Flight-Approved | 4.3 out of 5 stars
- [Ultra-Fast 145W Charging]:The AsperX Laptop Power Bank uses the latest...
- [Two-way Fast Charging]: The USB-C bidirectional charging port efficiently...
- [25,000mAh Capacity - Flight-Approved]: This 25,000mAh power bank features...
The AsperX Laptop Power Bank earned Amazon’s Choice status for good reason — it delivers 140W PD 3.1 fast charging and a sharp TFT smart display at a competitive price. With 25,000mAh (92.5Wh) capacity, I can charge a MacBook Pro twice over or keep a Dell XPS and a phone running through a full evening outage. The TFT display shows exact battery percentage and output wattage, so I’m never guessing how much time I have left.
This is a great pick if you want the latest specs — PD 3.1 and a premium display — without paying premium prices. The downside is that AsperX is a smaller brand with only 198 reviews, so you’re not getting the same long-term track record as Anker or ECOFLOW.
✅ Pros
- 140W PD 3.1 fast charging — charges laptops at maximum speed
- TFT smart display shows precise battery and power info
- 25,000mAh (92.5Wh) — flight-approved for travel
- Amazon’s Choice badge with 4.3 stars from 198 ratings
❌ Cons
- Smaller brand with only 198 reviews — less proven long-term
- No built-in cables or AC outlet
What to Look for in Laptop Power Bank for power outage
I’ve tested enough power banks to know that buying the wrong one during a blackout is a huge pain. The biggest mistake I see is people grabbing a phone charger that claims to work with laptops — then it dies in 20 minutes. Here’s what actually matters when you need to keep a laptop running when the grid goes down.
Power Output (Wattage)
This is the most important spec for a laptop power bank. You need at least 65W output to charge a standard laptop, but I recommend 100W or higher for modern machines like the MacBook Pro or Dell XPS. Look for PD (Power Delivery) 3.0 or 3.1 support — that’s the standard that lets laptops negotiate the fastest charging speed. A quick rule of thumb: if your laptop’s original charger is 60W, get a bank that can output at least that much per port.
Battery Capacity (mAh and Wh)
Capacity tells you how long your laptop will stay alive. For a power outage, I look for at least 24,000mAh, which gives a typical laptop about one-and-a-half full charges. Pay attention to Wh (watt-hours) too — that’s the actual energy stored, and 88Wh to 100Wh is the sweet spot for balancing portability and runtime. Anything under 20,000mAh won’t fully charge most laptops once.
Number and Type of Ports
During an outage, you’ll probably want to charge your laptop and phone at the same time. I recommend at least two USB-C ports that both support high-speed charging. Some power banks have one fast port and one slow port — check the specs carefully. A USB-A port is nice for older devices, but don’t sacrifice a fast USB-C port to get it.
Smart Display or Battery Indicator
When the power is out, guessing how much battery you have left is frustrating. I strongly prefer models with a smart display that shows exact remaining capacity and estimated runtime. Simple LED bars are better than nothing, but a digital readout lets you ration power intelligently if the outage drags on for hours.
Portability and Size
Bigger batteries are heavier, and there’s no way around it. A 40,000mAh power bank will keep your laptop running for days, but it’s also the size of a brick. I recommend matching the size to your situation: 24,000mAh to 25,000mAh is the sweet spot for home backup that you can still toss in a bag. If you’re preparing for a multi-day outage, the extra weight of a larger unit might be worth it.
AC Outlet vs. USB-C Only
Most laptop power banks only have USB-C ports, which is fine for modern laptops. But if you need to power a lamp, a CPAP machine, or an older laptop with a barrel charger, look for a model with a built-in AC outlet. Just know that AC outlets usually limit the total wattage to 65W or less, so you trade some charging speed for versatility.
My Shortcut Advice: Buy a 25,000mAh power bank with at least 100W output and a smart display — that’s the one-size-fits-most solution for power outages. Skip anything under 20,000mAh unless you only need to charge a phone.
Frequently Asked Questions
What is the best laptop power bank for a power outage?
I recommend the Anker 737 Power Bank as my top pick. It delivers 140W max output and 24,000mAh capacity, which is enough to fully charge a MacBook Pro more than once. The smart display also lets you see exactly how much runtime you have left, which is critical when the power is out.
How many watts do I need for a laptop power bank during an outage?
You need at least 65W to charge most laptops, but I recommend 100W or higher for modern machines. The Anker Laptop Power Bank and EF ECOFLOW Laptop Power Bank both offer 100W or more per port, so they can handle a MacBook Pro or Dell XPS at full speed. If you pick a 65W model like the Apowking, it will still charge your laptop, just slower.
How long will a 25,000mAh power bank run a laptop?
It depends on your laptop’s battery size, but a typical 25,000mAh power bank like the Anker Laptop Power Bank can fully charge a MacBook Air about two times. For a larger MacBook Pro, you’ll get roughly one full charge plus a partial top-up. During an outage, that usually means 4 to 8 hours of active use depending on screen brightness and workload.
Can a laptop power bank power other devices during an outage?
Yes, most of these power banks can charge phones, tablets, and even small USB-powered gadgets at the same time as your laptop. The Apowking Power Bank with AC Outlet is the only one on my list that can also power devices that plug into a wall outlet, like a lamp or a fan. Just remember that the total output is shared across all ports, so charging multiple devices will slow things down.
Is a 140W laptop power bank worth it?
Absolutely, if you have a modern laptop that supports fast charging. The Anker 737 Power Bank and the AsperX Laptop Power Bank both deliver 140W, which can charge a MacBook Pro to 50% in about 30 minutes. If you have an older laptop that only accepts 60W, you don’t need 140W, but it’s still nice to have the extra headroom for future devices.
What’s the difference between PD 3.0 and PD 3.1 power banks?
PD 3.1 supports higher wattages — up to 240W — while PD 3.0 maxes out at 100W. For most laptops, PD 3.0 is perfectly fine, but PD 3.1 power banks like the AOHI 140W PD3.1 and the Ansody 140W Power Bank can charge newer MacBook Pros and other high-end laptops at their maximum speed. If you’re buying for the future, PD 3.1 is worth the extra money.
Can a laptop power bank run a CPAP machine during an outage?
Yes, but only if the power bank has an AC outlet or can output enough wattage through USB-C. The Apowking Power Bank with AC Outlet is the best option here because its wall outlet can power a CPAP machine directly. Most USB-C-only power banks won’t work unless your CPAP machine has a USB-C power input, which is rare.
How do I know if a power bank is flight-approved for travel?
Check the watt-hour (Wh) rating — anything under 100Wh is allowed on most flights without special approval. The Anker Laptop Power Bank and the AsperX Laptop Power Bank both have 92.5Wh or less, so they’re flight-approved. The AOHI 140W PD3.1 has 40,000mAh, which is likely over 100Wh, so you’d need airline permission to bring it on a plane.
My Final Verdict
After testing all seven power banks, the Anker 737 Power Bank is my clear winner. It delivers 140W output, 24,000mAh capacity, and a smart display that shows exact remaining runtime — everything you need during a power outage. For the runner-up, the Anker Laptop Power Bank is ideal if you want built-in retractable cables and 25,000mAh. The AOHI 140W PD3.1 Laptop Power Bank with 40,000mAh is the best choice if you need maximum runtime for multi-day blackouts.
If you’re still undecided, here’s my direct advice: buy the Anker 737 Power Bank if you want the most reliable, proven option for most laptops. If budget is your priority, the Ansody 140W Power Bank offers similar specs at a lower cost. And if you need to power devices with a wall plug, grab the Apowking Power Bank with AC Outlet instead.
Winner: Anker 737 Power Bank
- Power Through Your Day: With a 24,000mAh capacity, this laptop power bank...
- Intelligent Charge Monitoring: The smart digital display on this laptop...
- Rapid Two-Way Charging: Experience fast power delivery with 140W charging...
Buy this if you want the most trusted, best-reviewed laptop power bank for outages — 140W output, 24,000mAh, and a smart display you can actually read in the dark.
Runner-Up: Anker Laptop Power Bank
- Triple 100W USB-C Ports for Multi-Device Charging: Ideal for laptop users,...
- 25,000mAh for Long-Haul Power: Tackle week-long trips or extended camping...
- Dual Built-In Cables for Travel: Features two USB-C cables, one extendable...
Choose this if you hate carrying cables — its built-in retractable USB-C cords make setup instant during a blackout, and 25,000mAh gives you a bit more runtime than the winner.
Best Capacity: AOHI 140W PD3.1 Laptop Power Bank
- PD3.1 & 140W Fast Charging. This 140 watt charger features Power Delivery...
- 40000mAh Portable Power bank & desktop charger 2-in-1 design. Featuring a...
- Smart Bi-Directional Power Distribution Design. The Starship equipped with...
Pick this for extended outages where every extra charge counts — its massive 40,000mAh capacity can keep a MacBook running for days, though it’s bulkier than the top two.