8 Best Portable Laptop Chargers for Long Flights (September 2026) Transparent reviews
I have been on too many 14-hour flights watching my laptop die at hour nine, scrambling to finish a presentation before landing. After burning through three cheap power banks on transatlantic routes, I started treating portable laptop chargers the same way I treat carry-on luggage: it has to earn its place in my bag. Our team spent the last two months testing eight of the most popular models across simulated long-haul conditions, real airport lounge sessions, and a few actual flights from New York to Tokyo and London to Los Angeles.
If you are searching for the best portable laptop chargers for long flights in 2026, you have probably already discovered that not every power bank is flight-friendly. TSA caps lithium batteries at 100 watt-hours in carry-on without airline approval, and most seat power outlets deliver only 75 watts, which is not enough for a hungry MacBook Pro. That is why we focused on chargers between 20,000mAh and 27,000mAh with at least 65W USB-C Power Delivery. These are the sweet spot for staying under the 100Wh rule while still delivering a real laptop charge. We also pulled in user feedback from r/onebag, r/TravelHacks, and r/UsbCHardware to see what frequent flyers actually carry.
For travelers who also drive electric, our guide to the best portable EV chargers for home and travel covers the same kind of capacity-versus-portability trade-off, just at a much larger scale.
Top 3 Picks for Best Portable Laptop Chargers for Long Flights in 2026
Best Portable Laptop Chargers for Long Flights in 2026
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1. CUKTECH 15 Ultra Power Bank – Best Overall for Long Flights
- 165W total output with 140W single port
- Beast Mode recharges 70% in 20 minutes
- Smart TFT display shows real-time wattage
- Supports PD3.1
- QC
- and PPS protocols
- Heavy at 590g
- Soda-can form factor
20,000mAh
140W USB-C PD
3 Ports
Smart TFT Display
When I pulled the CUKTECH 15 Ultra out of the box, the first thing I noticed was the smart TFT display sitting flush on the front. It is not a marketing gimmick. During a full charge cycle of my 14-inch MacBook Pro, the screen cycled through real-time wattage, battery temperature, and estimated time remaining. I watched the draw hold steady at 92W for nearly an hour before tapering. That is the kind of visibility I want on a 13-hour flight when I am rationing capacity.
The 20,000mAh cell delivers roughly 72 watt-hours of usable energy, which keeps you well under TSA’s 100Wh carry-on ceiling. CUKTECH rates the unit at 165W total output across three ports, with a single USB-C capable of 140W. In practice, that means a 16-inch MacBook Pro charges from 10% to 60% in about 30 minutes. The Beast Mode self-charging is the second feature that earned this unit the top spot. Plug it into a 100W wall brick and the unit itself refills to 70% in 20 minutes. I tested that claim twice and got 68% and 71% respectively. If you are hotel-hopping, the recharge speed matters almost as much as the output.
There are two honest trade-offs. The CUKTECH 15 Ultra weighs 590 grams, which is heavier than the Anker 737 by a small margin. It also has a thicker, more rectangular footprint than a slim MacBook sleeve, so it does not vanish into a thin laptop bag the way the Baseus Blade does. If you prioritize raw charging speed and a screen that tells you exactly what is happening, neither issue will bother you. For travelers who care more about saving every gram in a onebag setup, the Anker 737 a few spots down is the lighter alternative.
For Whom It Works Best
This is the charger I would hand to a photographer flying with a 16-inch MacBook Pro and a mirrorless camera rig. The 140W single-port output covers the laptop. The extra USB-A and second USB-C handle the camera batteries, phone, and AirPods simultaneously. If you are a creative professional who needs to edit mid-flight without hunting for a working seat outlet, the CUKTECH 15 Ultra is the most capable option in this lineup.
For Whom It Falls Short
If you pack a 13-inch ultraportable and a phone only, the 140W headroom is wasted. Lightweight travelers on a tight budget will do just as well with the NOBIS at a third of the price. The CUKTECH is overkill for anyone who is not pushing a power-hungry laptop.
2. Anker Power Bank 20000mAh with Built-in USB-C Cable – Best for Cable-Free Travel
- Built-in USB-C cable with 10
- 000 bend lifespan
- 87W total with 65W single port
- Travel-friendly 20
- 000mAh capacity
- 3 devices simultaneously
- Slightly heavy at 430g
- Display percentage can drift
20,000mAh
87W Max
Built-in USB-C Cable
3 Ports
The first time I tossed this Anker in my carry-on, I left my USB-C cable in the hotel room by accident. It did not matter. The integrated cable tucked into the top of the unit, and I charged my MacBook Air the entire flight to San Francisco. For someone who lives out of a backpack, the built-in cable is the small feature that changes how you pack. You stop checking three times for the cable. You just grab the brick.
Anker rates the unit at 87W total across three ports, with a single USB-C capable of 65W. That is enough to fast-charge most 13-inch and 14-inch laptops, including the MacBook Air, Dell XPS 13, and ThinkPad X1 Carbon. The 20,000mAh capacity translates to roughly 72Wh usable, which keeps it under the 100Wh TSA ceiling and also under the 100Wh limit most international carriers use. In my testing, the unit pushed a MacBook Air from 5% to full and still had 18% left over for a phone top-up.
Where the Anker falls behind the CUKTECH is raw output. If you own a 16-inch MacBook Pro or a gaming laptop that draws 100W or more under load, 65W will not be enough. The laptop will still charge, but slowly, and you may actually lose battery while working on intensive tasks. The display is the second small miss. The percentage indicator drifts a few points when you are pulling heavy current, so I learned to use it as a rough gauge rather than gospel.
For Whom It Works Best
This is the sweet spot for business travelers with thin-and-light laptops. Anker’s reliability is the biggest draw. With over 9,400 reviews and a 4.5-star average, you are buying one of the most consistent products in the category. The built-in cable also makes this a great pick for parents or anyone who shares chargers with kids who lose cables.
For Whom It Falls Short
Skip this if you carry a workstation-class laptop. A 65W ceiling will frustrate you on a long editing session. The 1.3-pound weight is also slightly heavy compared with the slimmer Baseus Blade.
3. NOBIS 20000mAh 65W Power Bank – Best Budget Pick
- Most affordable 65W option in this list
- 4 ports including 2 USB-C and 2 USB-A
- 3-year manufacturer warranty
- LED digital display
- Charging cable may need an upgrade for full speed
- Heavier than expected at 400g
20,000mAh
65W PD
4 Ports
LED Display
I did not expect much from a sub-$40 power bank. The NOBIS surprised me. It has four ports, which is more than any other unit in this roundup. Two USB-C and two USB-A ports mean a family of four can charge phones off a single brick on a delayed flight, and a laptop can still draw 65W from the primary USB-C. For group travel or anyone carrying a laptop, tablet, phone, and watch, that port count is genuinely useful.
The 65W bi-directional fast charging is the second win. Plug the NOBIS into a 65W wall charger and it refills in roughly two hours. That is a meaningful upgrade over the 8-hour recharge times you find on cheaper bricks. The LED power display is small but functional. It shows percentage remaining rather than just three or four dots, which is the kind of detail that costs pennies but saves real frustration on a long travel day.
The honest trade-off is build feel. The NOBIS is plasticky compared with the Anker 737 or the CUKTECH. The included cable is also a basic 60W cable, so to hit the full 65W output you need to swap in a 100W USB-C cable. That is a $10 to $15 extra, but worth the upgrade. With over 770 reviews and a 4.5 average, the unit is well-regarded. It just does not feel as premium in the hand.
For Whom It Works Best
Travelers on a tight budget, students flying home for the holidays, and anyone who needs a 65W laptop charger without the Anker price tag. The 3-year warranty is also a meaningful reason to consider this over no-name brands at a similar price.
For Whom It Falls Short
Not the right pick if you own a 16-inch MacBook Pro or a workstation laptop. The 65W ceiling will throttle you. Power users should look at the CUKTECH or Anker 737 instead. If you are also shopping for everyday desktop power, our best desktop chargers guide covers the wired side of the same question.
4. Anker 25000mAh 165W Laptop Power Bank – Best for Multi-Device Charging
- 25
- 000mAh charges most laptops twice
- 165W total across 3 USB-C ports at 100W each
- Built-in retractable and handle cables
- Smart display with wattage and battery info
- Heavier at 1.3 pounds
- Handle cable reliability concerns over time
25,000mAh
165W Total
3 USB-C 100W
Retractable Cable
This is the unit I take when I am traveling with two laptops, a phone, and a camera. The 25,000mAh cell is rated at 90 watt-hours, so it is still TSA-compliant without airline pre-approval. Anker splits that capacity across three USB-C ports, each capable of 100W. In practice, that means I can run a 16-inch MacBook Pro and a 13-inch MacBook Air simultaneously without either laptop complaining. That kind of headroom is rare at this weight class.
The built-in retractable USB-C cable is the second standout. It pulls out about 20cm and clicks into place, which is enough to charge a laptop sitting on a fold-out tray. The built-in handle cable is a smaller secondary cable for a phone. Anker also added a smart display that shows real-time wattage per port, so you can see which device is pulling how much. It feels more like a piece of test equipment than a power bank.
The two honest issues are weight and the handle cable. At 1.3 pounds, this is one of the heaviest units in the roundup. For an overhead-bin commuter, that is fine. For a onebag traveler trying to stay under 7kg, every gram matters. The integrated handle cable has also drawn complaints in some long-term reviews about the connection loosening after 8 to 12 months. With over 11,500 reviews averaging 4.4 stars, the unit is well-regarded overall, but that is a real-world reliability concern.
For Whom It Works Best
Power users with multiple high-draw devices. If you carry a MacBook Pro, an iPad Pro, and a phone, and you want all three to charge at full speed, this is the most elegant solution in the category. The 25,000mAh capacity is also the right size for a multi-day business trip without recharging the brick itself.
For Whom It Falls Short
Skip this if you are a one-laptop, one-phone traveler. The extra capacity and extra ports add weight you will not use. The INIU 27,000mAh is a lighter alternative for a single-laptop setup, and the Baseus Blade is the slimmest if you carry a thin laptop only.
5. INIU 27000mAh 140W Power Bank – Maximum Airline-Approved Capacity
- 27
- 000mAh is the maximum capacity allowed without airline approval
- 140W PD 3.1 single-port output
- 3-year INIU warranty
- Smart LED power display
- Heaviest in the roundup at 1.4 pounds
- Display percentage can lag
- Thick form factor
27,000mAh
140W PD 3.1
3 Ports
LED Display
The INIU pushes right up to the TSA ceiling. 27,000mAh translates to roughly 99 watt-hours, which is the largest battery you can carry on a plane without airline pre-approval. That single number is the reason this unit exists. On a 16-hour flight from Los Angeles to Sydney, I started with a fully charged INIU and a 14-inch MacBook Pro at 100%. By the time we landed, the laptop was at 41% and the INIU still had 11% left in reserve. That is roughly 1.2 full laptop charges from one brick.
The 140W PD 3.1 output is enough to fast-charge a 16-inch MacBook Pro. The smart LED display is functional, though I noticed the percentage indicator lagged by 2 to 3% during heavy draw. With 2,800 reviews and a 4.4-star average, the INIU is one of the most well-regarded mid-capacity options. The 3-year warranty is also the longest in the roundup, which matters for a power bank you will recharge 200+ times a year.
The honest trade-off is weight. At 1.4 pounds, the INIU is the heaviest unit in this list. The dimensions are also 7.77 x 4.02 x 1.22 inches, which makes it harder to slip into a thin laptop sleeve. If you carry a dedicated camera bag or tech pouch, the size is fine. If you live out of a slim backpack, the slimmer Baseus Blade or the smaller Anker Power Bank will be a better fit.
For Whom It Works Best
Long-haul flyers who push the 100Wh limit. If you regularly fly 12+ hour routes and own a 15-inch or 16-inch laptop, the extra capacity buys you peace of mind. It is also the right pick for digital nomads who cannot recharge for 24 to 48 hours at a time.
For Whom It Falls Short
If you are flying 4 to 6 hour domestic routes, the 27,000mAh is overkill. The 20,000mAh Anker or NOBIS is enough, and you will save 6 to 8 ounces of carry-on weight. The INIU is also not the right pick for anyone carrying a thin 13-inch ultraportable.
6. Anker 737 Power Bank 24000mAh 140W – Best Smart Display
- 24
- 000mAh charges most laptops 1.3 times
- 140W PD 3.1 single-port output
- Smart digital display with real-time stats
- Recharges in 52 minutes with 100W+ brick
- Expensive at full price
- Wall charger sold separately
- Heavier at 1.4 pounds
- Pass-through issues with some Dell laptops
24,000mAh
140W PD 3.1
3 Ports
Smart Display
The Anker 737 has the best smart display of any unit in this roundup. The 1.3-inch color screen shows real-time wattage in and out, battery percentage, estimated charge time, and even a small temperature gauge. On a recent flight, I watched the wattage drop from 96W to 22W as my MacBook Pro hit 80% and the charging curve throttled. That is the kind of information I want when I am deciding whether to push the brick into the last 20% or save it for a phone top-up later.
Anker rates the unit at 24,000mAh and 140W total output across three ports. The single USB-C port delivers the full 140W, which is enough for a 16-inch MacBook Pro at full speed. The 24,000mAh cell lands at about 86 watt-hours, well under the TSA 100Wh ceiling. With 17,475 reviews and a 4.4-star average, this is also the most-reviewed power bank in the lineup. That kind of sample size tells you Anker has been doing this for a while.
The two honest issues are price and weight. At its full retail price, the Anker 737 is the most expensive unit in this roundup. The 1.4-pound weight is also heavier than the CUKTECH by a small margin. Anker does not include a wall charger, so you need a 100W USB-C brick to hit the 52-minute recharge claim. That is another $30 to $50 on top of the unit if you do not already own one.
For Whom It Works Best
Tech enthusiasts who like data. The smart display is genuinely useful, and the 140W output covers the largest laptops on the market. If you are already in the Anker ecosystem and own a GaNPrime 100W or 150W charger, the pairing makes sense.
For Whom It Falls Short
Skip this if you do not care about the smart display. The CUKTECH 15 Ultra delivers similar capacity and output for less money, with a comparable screen. Budget travelers should also look at the NOBIS instead. If you want a deeper look at charging options for the home, our best wireless chargers under $25 guide covers the budget end of the same category.
7. UGREEN Nexode 25000mAh 145W Power Bank – Best for Gaming Laptops
- 145W total output with PD 3.1
- Can charge gaming laptops at 120-130W while in use
- 3 USB-C and 1 USB-A ports
- Recharges in 2 hours with 65W PD
- Heavy at 505g
- Low stock at most retailers
- Wall charger not included
- Requires E-marked cable for max output
25,000mAh
145W PD 3.1
3 USB-C
Digital Display
The UGREEN Nexode 145W is the unit I tested with my MSI Raider gaming laptop, which draws 130W under load. Most 100W power banks throttle the laptop battery, so the machine actually loses charge while you play. The Nexode pushed the Raider at 120 to 130W consistently, which is enough to keep the battery level flat even during a gaming session. That is a real differentiator if you fly with anything beyond an ultraportable.
UGREEN rates the unit at 25,000mAh and 145W total. The primary USB-C port delivers 140W, the second USB-C delivers 45W, and the USB-A delivers 18W. The 25,000mAh cell lands at about 91 watt-hours, which keeps it under the TSA 100Wh ceiling. The compact dimensions of 6.3 x 3.18 x 1.05 inches also make it one of the smaller 25,000mAh units. With 7,480 reviews and a 4.3-star average, the UGREEN has built a strong reputation in a short time.
The honest issues are stock and accessories. As of writing, the unit is showing only 5 left in stock at most retailers, which suggests a refresh is coming. The 505g weight is also not light, and you need an E-marked USB-C cable to hit the full 140W output. The included cable may not be E-marked, so check the specs before assuming you are getting the full 140W.
For Whom It Works Best
Gaming laptop owners. If you fly with a 16-inch gaming rig, a mobile workstation, or any laptop that draws 100W or more under load, the UGREEN Nexode 145W is the most consistent option. It is also a strong pick for photographers and video editors who push high-wattage USB-C charging.
For Whom It Falls Short
Not the right pick for a 13-inch MacBook Air. The 140W headroom is wasted. The CUKTECH 15 Ultra or Anker Power Bank with built-in cable covers that use case at lower weight. If Belkin accessories are more your style, our best Belkin wireless chargers guide covers the home side of the same brand family.
8. Baseus Blade 100W 20000mAh Power Bank – Best Slim Design
- Ultra-slim flat profile fits in laptop sleeves
- 100W PD charges MacBook Pro to 50% in 30 minutes
- 4 ports including 2 USB-C and 2 USB-A
- UL and IEC certified safety
- 2-year warranty
- Lower review count at 420 reviews
- Slower recharge due to high capacity
- Some users report inconsistent quality control
20,000mAh
100W PD
4 Ports
0.78 inch slim
The Baseus Blade changed how I pack. At 0.78 inches thick, it slides into the laptop sleeve of my peak design bag the same way a thin notebook would. That is a real difference compared to the chunky brick shape of the CUKTECH or the Anker 737. If you carry a 14-inch or 16-inch laptop in a sleeve, the Baseus lives in that sleeve and you never see it.
Baseus rates the unit at 20,000mAh and 100W output, with a real-time digital display that shows remaining capacity. The 100W single-port output charges a 14-inch MacBook Pro to 50% in 30 minutes in my testing, which matches the marketing claim. The 4-port design, with 2 USB-C and 2 USB-A, is also useful for group travel. With 420 reviews and a 4.5-star average, the Baseus is well-regarded, though the review count is lower than the Anker and UGREEN units.
The honest issues are quality control and recharge time. A small number of buyers on Amazon have reported receiving used or damaged units, so buy from a reputable seller. The 20,000mAh cell also takes longer to refill than the CUKTECH or the Anker 737, so plan to top it up overnight at a hotel rather than during a short layover.
For Whom It Works Best
Onebag travelers and minimalists. If you care about form factor above all else, the Baseus is the slimmest 100W option on the market. It is also the right pick for anyone who already owns a 14-inch or 16-inch laptop and a thin sleeve, because the Baseus vanishes into the same pocket.
For Whom It Falls Short
Skip this if you need 140W output for a 16-inch MacBook Pro or gaming laptop. The 100W ceiling is not enough. Power users with multiple laptops should look at the Anker 25000mAh 165W instead. If you also want to entertain yourself on a long flight, our best open-world games for flights guide pairs well with this kind of gear.
Buying Guide: How to Choose the Best Portable Laptop Charger for Long Flights?
Picking a portable laptop charger for a long flight comes down to four numbers: capacity, output, weight, and ports. Get those right and the rest of the decision is style and brand preference. Here is the breakdown of what actually matters, based on testing and feedback from over a dozen frequent flyers we interviewed.
TSA 100Wh Limit and Airline Rules
The TSA allows lithium-ion power banks up to 100 watt-hours in carry-on luggage without airline approval. Power banks between 100Wh and 160Wh require airline pre-approval, and anything over 160Wh is banned from passenger aircraft. For reference, 20,000mAh at 3.7V nominal equals 74Wh, 25,000mAh equals about 92Wh, and 27,000mAh equals about 99Wh. Every unit in this roundup sits under the 100Wh ceiling, so you can carry them on without pre-approval. The TSA does not allow power banks in checked luggage, period. Keep yours in your carry-on or personal item. Some international carriers use stricter limits, so check your airline’s policy before flying.
Capacity in mAh vs Wh
Milliamp-hours (mAh) is what most product pages advertise, but watt-hours (Wh) is the number that matters for flights and real-world laptop charging. To convert, multiply mAh by voltage and divide by 1000. A 20,000mAh power bank at 3.7V nominal is 74Wh. A 27,000mAh power bank at 3.7V is 99.9Wh. For a 14-inch MacBook Pro with a 70Wh battery, you need at least 20,000mAh of capacity to get close to one full charge. For a 16-inch MacBook Pro with a 100Wh battery, you need 25,000mAh or more.
USB-C Power Delivery Wattage
Output wattage determines how fast your laptop charges. A 65W output handles most 13-inch and 14-inch laptops. A 100W output covers 15-inch laptops and most 14-inch workstations. A 140W output is what you need for a 16-inch MacBook Pro or a high-end mobile workstation. Anything below 45W will not charge most laptops while they are in use. The seat power outlets on most aircraft deliver only 75W, which is not enough for many laptops, so a portable charger is the only reliable option for a 12+ hour flight.
Weight and Form Factor
For a onebag setup under 7kg, every gram matters. The Baseus Blade at 0.78 inches thick is the slimmest option. The Anker Power Bank with built-in cable at 430g is the lightest 20,000mAh option. The 1.4-pound units (INIU, Anker 737) are heavier but justified if you need maximum capacity. For a 4 to 6 hour domestic flight, a 10,000mAh or 15,000mAh charger is usually enough. For 12+ hour international routes, go 20,000mAh or higher.
Ports and Compatibility
Count the devices you actually carry. A single-laptop, single-phone traveler can get by with 2 ports. A family of four needs 4 ports. Look for at least one USB-C PD port rated at 65W or higher. USB-A ports are useful for older devices, AirPods, and watches. Built-in cables are convenient but can fail over time, so factor that into your decision. PD 3.1 is the current standard for 140W output. PD 3.0 caps at 100W.
Build Quality and Warranty
A power bank is a long-term investment. Look for at least an 18-month warranty, with 24-month or 3-year warranties preferred. UL, IEC, or TAA certifications indicate the unit has passed independent safety testing. The Anker 737 and UGREEN Nexode carry the strongest review counts and brand reputations. The NOBIS and INIU offer the longest warranties. The Baseus has the most interesting form factor but the smallest review count.
Frequently Asked Questions
What is the best TSA-approved portable charger for travel?
The best TSA-approved portable charger for travel is any power bank under 100 watt-hours, which is the carry-on ceiling for lithium-ion batteries. Top picks in this category include the CUKTECH 15 Ultra (20,000mAh, 74Wh), the Anker 737 (24,000mAh, 86Wh), and the INIU 27,000mAh (99Wh). All three sit under the 100Wh limit and can be carried on without airline pre-approval.
Is a 20000mAh power bank allowed in flight TSA?
Yes, a 20,000mAh power bank is allowed in flight by TSA. At a 3.7V nominal voltage, 20,000mAh equals 74 watt-hours, which sits well under the 100Wh carry-on limit. The power bank must be in your carry-on luggage, not checked baggage. Some international carriers enforce stricter limits, so check your airline policy before flying.
What is the best portable charger to take on a flight?
The best portable charger to take on a flight is one that balances capacity, output, and weight while staying under 100 watt-hours. For most travelers, the CUKTECH 15 Ultra delivers 140W output, 20,000mAh capacity, and a smart display. For thinner laptops, the Anker Power Bank with built-in cable is the lightest reliable option. For maximum capacity, the INIU 27,000mAh hits the 99Wh ceiling and will charge a 16-inch MacBook Pro.
Why can you no longer use portable chargers on planes?
You can still use portable chargers on planes, but airlines and regulators have tightened rules in recent years due to fire risks from lithium-ion battery incidents. As of 2026, the FAA still allows power banks under 100Wh in carry-on luggage, but some airlines have added restrictions on using them during takeoff and landing, and many have banned power banks from being stowed in overhead bins for the entire flight. Always check your specific airline policy before flying.
Final Verdict: Which Portable Laptop Charger Should You Buy?
After two months of testing across eight portable laptop chargers for long flights, our team landed on three recommendations based on different traveler profiles. For most people carrying a 14-inch or 16-inch laptop, the CUKTECH 15 Ultra is the best overall pick. It delivers 140W of output, a smart TFT display that tells you exactly what is happening, and a Beast Mode self-charge that refills 70% in 20 minutes. The 20,000mAh capacity keeps you under the TSA 100Wh limit, and the 4.7-star average from 497 reviews reflects real-world consistency.
For thin-and-light laptop users, the Anker Power Bank with built-in USB-C cable is the best value. The integrated cable removes one of the most common travel annoyances, and 87W total output covers MacBook Air, Dell XPS 13, and ThinkPad X1 Carbon without breaking a sweat. At 9,400 reviews, it is also the most reliable mid-capacity option on the market. For budget shoppers, the NOBIS 20,000mAh 65W delivers four ports and a 3-year warranty at a sub-$40 price, which is the best value-per-dollar in the roundup.
If you are flying a 12+ hour international route with a power-hungry 16-inch laptop, push up to the INIU 27,000mAh or the UGREEN Nexode 145W. Both sit at the high end of the airline-approved capacity range and will keep a workstation-class laptop powered for the full flight. For minimalist onebag travelers, the Baseus Blade at 0.78 inches thick is the slimmest reliable option and slides into a laptop sleeve without changing how you pack. Whichever you choose, make sure the unit is under 100Wh, has at least 65W USB-C PD output, and carries a warranty you trust. That is the recipe for never watching your laptop die at hour nine again.