By Charlie Rudge and Vinal Patel, co-founders of Krafted
If you work on the move, you know the moment. Laptop on 4%. Deck half-finished. Boarding call on the screen. Not a socket in sight.
That moment is why we built Edge. And because we'd rather you trusted it than just bought it, here's everything we'd tell a friend before their first trip with it: what the numbers on the label really mean, what it will (and won't) charge, and how to walk through airport security without a second thought.
The one number to remember: 77Wh
Turn Edge over and you'll find a label packed with volts, amps and port codes. Ignore most of it. The number that matters is 77Wh.
Watt-hours measure how much energy a battery holds. It's the figure airlines and regulators use, because it's the only one that compares batteries fairly. Edge's 77Wh is more than the built-in battery of many 13-inch laptops, and it sits comfortably under the 100Wh limit that lets you fly with it, no questions asked. More on flying below.
"Only 5,000mAh?" Here's why that isn't small
The label also says 5,000mAh, and we know what you're thinking: the power bank in your drawer says 20,000mAh. Surely Edge is a quarter of the size?
Not even close. This is where we dared to do things differently.
Most power banks quote their capacity at 3.7V, the voltage of a single battery cell. We built Edge's cells to run at 15.4V, much closer to what a laptop actually needs. Milliamp-hours only make sense at a given voltage, so the honest comparison is in watt-hours:
- Edge: 5,000mAh × 15.4V = 77Wh
- Quoted the usual way, at 3.7V, that's roughly 20,800mAh
Same league as the big laptop power banks. Just measured at a different voltage.
What actually reaches your devices
Something worth knowing: no power bank delivers 100% of its stored energy. A little is always lost as heat when the voltage is converted. We print what you'll really get on Edge's label, because we think you should know.
| Charging at | Usable capacity (from the label) | Energy delivered |
|---|---|---|
| 20V (laptops) | 2,800mAh | about 56Wh |
| 15V | 3,800mAh | about 57Wh |
| 12V | 4,700mAh | about 56Wh |
| 9V (fast-charging phones) | 6,400mAh | about 58Wh |
| 5V (standard USB) | 11,300mAh | about 57Wh |
In real life, that's around 56–58Wh into your kit: close to a full charge for a laptop with a 50–55Wh battery, or several charges for your phone.
What Edge will charge (and what it won't)
Edge has four ports: two USB-C and two USB-A. Plug in and it works out the right power for your device on its own.
| Port | Maximum output | Perfect for |
|---|---|---|
| One USB-C port on its own | 65W | Your laptop, tablet or phone |
| Both USB-C ports together | 45W + 20W | Laptop and phone at the same time |
| Each USB-A port | 18W | Older cables, earbuds, accessories |
Your laptop. If your laptop came with a charger of 65W or less, Edge charges it at full speed. That's a MacBook Air and most 13–14-inch work laptops.
Bigger machines. We'll be straight with you: a 16-inch MacBook Pro or a gaming laptop wants 96W or more. Edge will still feed it, just more slowly, and under heavy use it may only keep it level. If that's your setup, a higher-output bank will serve you better. We'd rather you knew now than found out at the gate.
Laptop and phone together. Laptop in one USB-C port, phone in the other. The laptop gets up to 45W, the phone up to 20W, which is still a fast charge for most phones.
Keeping Edge topped up
Edge recharges through either USB-C port at up to 45W. Your laptop charger is ideal; a phone charger works too, just more slowly.
The easiest routine on the road: Edge goes on charge overnight at the hotel, or next to the laptop in the lounge, and it's ready for whatever tomorrow throws at it.
Flying with Edge
This is the bit that matters most when you're standing in the security queue. The short version: Edge goes in your hand luggage on UK flights, no permission needed. Here's the detail.
- Under 100Wh, no approval. Power banks up to 100Wh can be carried in the cabin without asking the airline first. Edge is 77Wh, and it's printed right there on the label, so security can check it in seconds.
- Hand luggage only. Power banks never go in the hold. If your cabin bag gets taken at the gate, slip Edge out first.
- Two power banks maximum. Since 27 March 2026, international rules cap each passenger at two.
- No recharging in the air. You can't charge a power bank from the seat socket or USB port during the flight.
- Using it onboard depends on the airline. Some UK airlines, including easyJet, don't allow power banks to charge devices during the flight; others are more relaxed. Check before you fly and follow the crew.
So here's how we'd do it: top everything up from Edge at the gate or in the lounge, keep it stowed for the flight, and land with a full laptop and a full phone. That's the peace of mind we built it for.
Airline rules do change, so always check your airline's latest guidance before you travel.
Built to last, made to be looked after
At Krafted we believe durability is sustainability. The most sustainable power bank is the one you don't have to replace, so Edge is built to come with you trip after trip, year after year.
The marks on the label show the standards it meets:
| Mark | What it means |
|---|---|
| UKCA | Meets the product safety rules for sale in Great Britain |
| CE | Meets the equivalent rules for sale in the EU |
| FCC | Meets US limits on electromagnetic interference |
| RoHS | Restricts hazardous substances such as lead and mercury |
| Crossed-out wheelie bin | Never put it in household waste |
That last symbol matters to us. When Edge does eventually reach the end of its life, please recycle it at an electronics or battery collection point so its materials get a second life too.
FAQs
Can I take Edge on a plane?
Yes, in your hand luggage. At 77Wh it's under the 100Wh limit, so you don't need to ask the airline.
Can Edge go in my checked luggage?
No. Power banks must always travel in your hand luggage, never in the hold.
How many power banks can I take on a flight?
Since 27 March 2026, international rules allow a maximum of two per passenger. Some airlines are stricter, so check before you fly.
Can I use Edge during a flight?
It depends on the airline. Some, including easyJet, don't allow power banks to charge devices onboard. Charge up at the gate and you won't need to.
Can I recharge Edge on the plane?
No. Recharging power banks from seat sockets or USB ports isn't allowed during flights.
How many mAh is Edge?
The label says 5,000mAh at 15.4V, which is 77Wh. Measured the usual way, at 3.7V, that's roughly 20,800mAh.
Will Edge charge my MacBook?
Yes. A MacBook Air charges at full speed. Larger MacBook Pros charge more slowly, because Edge tops out at 65W from one port.
How many times will Edge charge my laptop?
Around 56Wh reaches your devices, so close to one full charge for a laptop with a 50–55Wh battery. Bigger batteries get a good top-up.
Can I charge my laptop and phone at once?
Yes. Use both USB-C ports: up to 45W for the laptop and 20W for the phone.
How fast does Edge recharge?
Up to 45W through either USB-C port. Use a 45W or higher USB-C charger for the quickest refill.
We started Krafted to change the way people think about tech: beautiful things, built to last, that solve a real problem. Edge is that idea in your bag. Travel well, and dare to be different.
Charlie and Vinal
