Hyper

HyperJuice 245W

Expert rating8.6 / 10

Capacity:: 100,000mAh / 99Wh (airline max)
Total Output:: 245W
USB-C Ports:: 2x 100W PD
Display:: LCD wattage and time-remaining readout

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Manufacturer: Hyper Last updated: 2026-09-12

Where to buy

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HyperJuice 245W Review

If you fly with a power bank and want the absolute largest capacity the TSA and airlines allow without special approval, the HyperJuice 245W is built to sit right at the 100Wh ceiling.

It packs 99Wh, a hair under the 100Wh regulatory limit for carry-on without airline sign-off, into a chassis with dual 100W USB-C ports so it can genuinely fast-charge two laptops at once rather than just topping off phones. Frequent flyers who work from a MacBook Pro on the road get the most legal capacity and the most usable output in one unit.

The 100Wh Airline Ceiling

US and most international carriers allow power banks up to 100Wh in carry-on without needing airline approval; between 100-160Wh you typically need to ask first, and anything above that is banned outright. HyperJuice engineers to just under that line (99Wh) to legally maximize capacity, which is why its mAh rating looks lower than its physical cell count would suggest when converted at standard voltage.

Comparison to Alternatives

The Anker Prime 27650mAh 250W has a similar airline-safe capacity and even higher peak total wattage (250W vs 245W), but the HyperJuice's LCD readout is more detailed (time-remaining estimates, not just percentage) and its dual 100W ports are matched rather than one primary and one secondary port. For flyers specifically, both are strong choices; HyperJuice markets itself more explicitly around the airline-legal angle.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8.6 / 10

The power bank to bring on a flight when you need to keep two laptops running at full speed.

Best for

Frequent flyers who work from laptops on the road
Charging two 100W laptops simultaneously
Professionals wanting max legal airline capacity

Not for

Anyone needing an AC outlet (none included)
Ultralight everyday carry (750g is substantial)
Wireless charging needs

Specifications

What these specs mean

Identity

Brand	Hyper (HyperJuice)
Model Number	HyperJuice 245W

Capacity

Capacity mAh	27000 mAh
Capacity Wh	99 Wh
Cell Chemistry	Lithium-Polymer

Output power

Max Output With All Ports	245W across all ports

Ports

Output Port Count	3 ports

Recharging

Recharge Input Power	Up to 100W via USB-C, full recharge in about 1.5 hours

Display and controls

Display Type	LCD screen showing wattage, capacity %, and estimated time remaining

Size and portability

Weight	1.65 g
Length	155.0 mm
Width	79.0 mm
Thickness	39.0 mm

Safety and features

Airline Safe	Yes

FAQs

What are the key specifications of the HyperJuice 245W (100,000mAh/Largest Airline-Legal Size/Dual 100W USB-C PD for Pro Laptop Workflows)?

Key specs for the HyperJuice 245W: Capacity 27000 mAh, Ports 3x USB-C, 1x USB-A, Energy 99 Wh, USB-C1 Output Up to 100W, USB-C2 Output Up to 100W, USB-C3/USB-A Output Up to 45W combined.

Who is the HyperJuice 245W (100,000mAh/Largest Airline-Legal Size/Dual 100W USB-C PD for Pro Laptop Workflows) best suited to?

Best suited to: Frequent flyers who work from laptops on the road; Charging two 100W laptops simultaneously; Professionals wanting max legal airline capacity.

What are the drawbacks of the HyperJuice 245W (100,000mAh/Largest Airline-Legal Size/Dual 100W USB-C PD for Pro Laptop Workflows)?

Not the best fit for: Anyone needing an AC outlet (none included); Ultralight everyday carry (750g is substantial); Wireless charging needs.