Most people buy a small charger thinking it will save them in an emergency. In reality, those pocket-sized ones usually only top up your phone a couple of times. Try connecting a laptop, and you quickly see the problem. On the road, when your phone is dying, your tablet is at 3 percent, and your laptop screen goes black right before a meeting, it feels a bit hopeless. At moments like this, what you wish for is not just another “backup battery” but something strong enough to really help—a 100W portable charger.

A 100W Power bank sits right in that middle ground. It is powerful enough to fast-charge a phone or a tablet, yet it can also keep a laptop running or give your drone a second flight. That combination makes it a bit of a travel essential. The AFERIY Nano100 is one example: it uses a lithium iron phosphate battery, which is safer than common cells and lasts longer, too. It is also small enough to slip into a backpack, and since it’s under the airline limit, you can even carry it onto a plane. One detail I really like—it has a retractable charging cable built inside. No more digging through your bag, wondering if you forgot the cord.

Understanding a 100W Power Bank

Let’s break it down. A watt is basically a way to measure power. It tells you how much energy flows every second. When you see a 100W power bank, it means the charger can deliver up to 100 watts at once. That amount of power is more than enough for everyday needs. With it, you can charge your phone and tablet quickly, keep your laptop running, or give your camera and drone the extra juice they need.

Compared with a 30W or 65W charger, a 100W portable charger is far more versatile. It can still be carried in your hand luggage, but it charges a laptop almost as easily as it charges your phone. That extra flexibility is the real difference.

Devices a 100W Power Bank Can Support

Any gadget that pulls under 100 watts is fair game.

Take the AFERIY Nano100 as an example again. With a capacity of 99.2Wh, which is about 31,000mAh, this charger can put out 100W from a single port and up to 145W when you use all the ports together. That’s more than enough for things like phones, tablets, drones, cameras, smartwatches, LED lamps, or even a Nintendo Switch. It comes with three ports, so you and a friend can charge at the same time without having to argue over who gets to plug in first. Just remember, if the total demand goes past 145W, the battery will drain faster.

How to Calculate 100W Portable Charger Runtime

Since it holds 99.2Wh of energy, the Nano100’s runtime depends on what you plug in. Here’s a simple way to figure it out:

Runtime (hours) = Battery Capacity (Wh) ÷ Device Power (W) × Conversion Efficiency

For instance, running a 60W laptop at about 85% efficiency gives you around 1.4 hours. If you’re charging two devices at once, just add their wattage together before doing the math.

How to Choose the Right 100W Power Bank

Not all models are equal. A few things are worth checking before you buy:

Battery type: LiFePO4 batteries are safer, more heat-resistant, and last over two thousand cycles.

Portability: Weight matters if you’re commuting or traveling often.

Ports and cables: USB-C fast charging is a must. A built-in cable saves you from forgetting one at home.

Recharging options: If you camp or hike, solar compatibility is a big plus.

The Nano100 checks all these boxes. It weighs just 1.1kg, comes in black or pink, and even supports solar input. With normal use, it should last well over five years.

What a 100W Power Bank Cannot Do

There are limits. A 100W Power bank cannot handle high-power appliances like kettles, microwaves, hair dryers, or car fridges. Try to plug in a coffee maker, and it simply won’t start. These appliances need far more wattage than a portable charger can deliver.

When to Step Up to a Larger Power Station

If you need to power multiple heavy devices or run appliances above 100W, a bigger station is the way to go.

AFERIY P210: With 2048Wh capacity and 2400W output, it handles rice cookers, projectors, and even small air conditioners.

AFERIY P310: At 3840Wh and up to 3600W output, it’s enough for bigger gear such as a fridge, microwave, grill, and so on. Perfect for long outdoor stays or emergencies.

Conclusion

If you’re looking for something that does more than a tiny pocket charger but still feels light enough to carry every day, a 100W portable charger like the AFERIY Nano100 is a solid choice. It gives you a good mix of safety, portability, and real charging power. Whether you are on a trip, out camping, or just working in a spot without an outlet, a 100W power bank lets you relax knowing your devices will stay alive when you need them the most.

FAQS About 100W Power Banks

Can I fly with a 100W Power bank

Yes. Anything under 100Wh is allowed on planes, and the Nano100 is 99.2Wh.

Does it support pass-through charging?

Yes. You can charge the Nano100 while it charges your devices.

What about solar charging?

Pair it with the AF-S30 foldable solar panel, and it turns into a small solar generator, perfect for hiking or backup.

Why doesn’t it always reach the full 145W output?

When using all three ports, the total is capped at 115W. To get the full 145W, you need to use the 100W and 45W ports together.