Power for busy days
Keep 20,000mAh ready for work and travel.
- 20,000mAh
- Up to 65W wired
- Travel adapters
MagBank Universal Max
- Recharge in 150+ countries
- Power your laptop and daily devices
- Pack fewer chargers for your trip
Free shipping
Tracked delivery
30-day returns
Easy return process
MagBank Universal Max
Sale price¥23,600 JPY
Regular price¥31,400 JPY
The ultimate travel power bank
One charger for every country
Pack one charger with built-in travel adapters for your next trip.
Pack for different outlets
US plug with EU, UK and AU travel adapters.
Power beyond your phone
20,000mAh battery with up to 65W wired output.
Charge your phone and watch
Charge your phone and supported Apple Watch.
Go hands-free while charging
Open the kickstand to support your phone for viewing.
The highlights
USB-C laptop charging
Power compatible laptops through the USB-C output.
Charge both
Snap on your iPhone and rest your Apple Watch on its dedicated charging area.
Ready for travel
Keep your charging setup together when you travel.
Battery at a glance
Check the remaining charge on the built-in display.
Product details
Tech specs
| Battery capacity | 20,000mAh @3.85V (77Wh) |
|---|---|
| Battery type | Solid-State Lithium Battery |
| Apple Watch wireless output | 2W |
| USB-A port (A3) output | 10W (5V/2A) |
| USB-C ports (C1 / C2) output | Up to 65W (5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.25A) |
| Wireless output | Qi2.2 Magnetic up to 25W (25W / 17.5W / 15W / 10W / 5W) |
| AC input (built-in wall plug) | 100–240V ~ 0.8A (Global Voltage Support) |
| USB-C ports (C1 / C2) input | Up to 65W |
| Charging modes | Wall Charger Mode |
| Charging technology | GaN Fast Charging Technology |
| Multi-device charging | Intelligent power allocation when charging wired + wireless devices simultaneously |
| Safety features | Overcharge protection, over-discharge protection, overcurrent protection, short circuit protection, temperature protection |
| Materials | Fire-resistant ABS + PC |
| Dimensions | 125 × 72 × 33.5 mm / 4.92 × 2.83 × 1.32 in |
Compatibility
Need help identifying your device?
Find the exact model in your device settings, then match it to a charging group above.
Identify your iPhone · Identify your Apple Watch · Identify your Samsung device
Quick start
- Recharge before you go
Use the input port, cable and adapter specified for your power bank. Check that it has sufficient charge.
- Choose the right output
Check which wired or wireless output your device supports. Remove wallets and metal attachments before wireless charging.
- Connect and check
Connect one device first. Use the power button only as directed by the instructions for your model.
- Test your complete setup
Confirm the device is charging before relying on the power bank away from home. Stop use if the battery is damaged or swollen.
Use the instructions supplied with your product for its exact assembly and controls.
Helpful guides
View all Product Help
What’s included
-
1 × Solid-state GaN power bank (20,000 mAh)
-
1 × US wall plug (built-in)
-
1 × EU / UK / AU plug adapters
-
1 × US extension cable (long power cord)
FAQs
What devices can I charge with this power bank?
Charge the supported iPhones, Apple Watch models and Qi-enabled earbud cases listed under Compatibility. USB-C output provides up to 65W for suitable phones, tablets and laptops. Check the charging method, output limits and fit requirements for your device.
How many charges can I get from 20,000mAh?
You can recharge most smartphones multiple times on a single charge. Exact results depend on your device, but it’s built to power you through long days, travel, and heavy use.
Can it charge a laptop?
Yes. With up to 65W USB-C output, it can charge many USB-C laptops, including MacBook Air–class devices and similar models.
How many devices can it charge at once?
You can charge multiple devices simultaneously using USB-C, USB-A, magnetic wireless, and Apple Watch charging. Intelligent power allocation keeps performance stable.
Is it airplane safe?
Pack power banks in carry-on baggage, never checked luggage. Check the watt-hour (Wh) rating printed on your unit and your airline’s current limits before travel. Airlines may also limit the number carried and their use or charging onboard. Protect the power bank from damage and short circuits, and do not travel with a damaged or recalled battery.
Can I use it internationally?
Yes. It supports 100–240V global voltage and includes interchangeable plugs for worldwide use.
Customer Reviews
Overall rating: 4.9 / 5 from 48 reviews.
Very well built charging unit with very fast mag charging system. No problems with this one works great.
Love this charger our iPhones including iPad all up seven times on its full charge and still had charge left over, a little heavy for my small bag, but in the backpack, I think I might get a smaller one just for me.
I really love this one. I can charge my phone almost 4 times on a full charge. It has all the ports you need but it’s a bit bulky which I don’t mind.
This power bank is a lifesaver on the road! No more waiting to charge my devices one by one. It's a must-have for any traveler. 5 stars!
I'm impressed! This power bank is the perfect travel companion. It charges all my devices simultaneously, and its fast charging capability is incredible. Love it!
Searched for a while and found this item. Once received it was much better than I assumed. Very happy with my purchase. Would buy again.
Other than a long delivery time, the experience was very good. My charger arrived in good condtion. It was fully charged on arrival, so I was able to test it right away. The charger works great with plenty of battery power to keep my devices charged. Glad I bought it!
Great charger
Just got it. Seems to work as expected.
Looks solid; works well
Purchased in 2024 for a trip. Worked great in Europe and love the fact I don't need to carry cables, just the adaptor for the country I was in. 1 year later, the screen is starting to short out, and it gets extremely hot when charging. I am hesitant to plug in to charge and walk away. I just decided to buy another one though, as this is the best portable charger with magsafe I have found.
👍
Works great strong battery supply!
I haven’t use it yet.
Great powerbank! I have an iPhone 14 Pro Max and I’m able to get almost 4 full charges with this powerbank!
Great vacation charging station
This charger is fabulous, all that we need for our O/S trip in March. We have tried it out with all our phones etc & it is very fast and so easy to use.
Well made power pack.
Best all around portable chargers. Sleek design, lots of options. I would definitely recommend this product.
Really love this. It's pricey but delivers what I want Yet to test it on my S9 tablet as it's going to be my main travel power bank.
Finally found a wireless battery bank worth buying and keeping. This one actually charges my phone much faster than my phone discharges while in use. And it is capable of almost 3 full charges on a single charge of the battery bank. No product on Amazon can do anything like this one can. I have had to return 2 battery banks because their capacity was much lower than the manufacturer claimed, couldn't charge my phone faster than it could discharge, or the battery bank itself took too long (one of them, 3 days) to charge. This battery bank has none of those issues whatsoever, and the customer service was amazingly quick and helpful when I had an issue with the transaction. I would recommend this to anyone.
