Poseidon XL

Built to thrive where others quit, the Poseidon XL delivers uncompromising performance in the world’s harshest environments. With a 100 W USB-C input and output, it powers everything from laptops to a Starlink Mini. Whether you’re deep in the backcountry or off the grid entirely, this is the power source you trust.
Poseidon XL
Poseidon XL
Poseidon XL
Poseidon XL
Poseidon XL
Poseidon XL
Poseidon XL
Poseidon XL

Poseidon XL

Built to thrive where others quit, the Poseidon XL delivers uncompromising performance in the world’s harshest environments. With a 100 W USB-C input and output, it powers everything from laptops to a Starlink Mini. Whether you’re deep in the backcountry or off the grid entirely, this is the power source you trust.
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Quantity
$199.99
$249.99

*limited number of units available

*orders including Poseidon XL will begin shipping 12/1

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Highlights

  • Largest airplane safe battery

  • IP68 waterproof and dustproof

  • 1.5 charges on a 13" laptop
    (27,000 mAh)

  • 4 fast charging ports

  • Powers satellite internet (2-3 hours)

  • 100W Solar Charging Port (XT60)

  • Backed by 2 year warranty

Specs

IP68 waterproof, fully submersible up to 6 feet for 45 minutes

Drop, crush & dust-proof — built to exceed MIL-STD-810G standards

27,000mAh lithium-ion battery provides 1.5 charges for a 13" laptop

100W input and output port for fast charging (20V/5A)

1 and 2 hour timer to conserve energy and prevent accidental overnight drains

Operates in extreme heat, cold, moisture, and elevation

Built-in voltage regulator and surge protection for safe charging

Compatible with laptops, satellite internet, phones, lighting equipment, cameras & more

Built-in LED charge indicators

2 USB-C input for fast recharging (5V/3A, 9V/2A, 12V/1.5A)

Rugged polycarbonate housing with diamond-texture grip and reinforced corners

Dimensions

Height: 8.35 in (47 cm)
Width:  6.2 in (16 cm)

Thickness: 1.61 in (4 cm)

Weight: 2.5 lbs (39.79 oz)

FAQ's

Q: How long will it run my satellite internet?

A: 2–3 hours. You can run it indefinitely when paired with a Spectre 56W Solar panel on a sunny day. 

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Q: How do I reset the Poseidon XL?


A: Press and hold the reset button for 10 seconds until the lights flash.

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Q: What is the difference between this battery and others I can purchase for cheaper?


A: Cheaper batteries are generally not waterproof, shockproof, or built for extreme use, which might work for some people. Poseidon XL is engineered to survive in the harshest of conditions. 

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Compare

Poseidon XL

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1.5 charges for a 13"  laptop (27,000 mAh)

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2 USB-C + 2 USB-A outputs + 1 XT60 Solar input

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IP68 waterproof & dustproof

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Power for Laptops

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H: 8.35 in 
W:  6.2 in

D: 1.61 in

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Weight: 2.5 lbs

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Poseidon Pro

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2–3 full phone charges (10,000 mAh)

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2 USB-C + 1 USB-A outputs

 

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IP68 waterproof & dustproof

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Power for Phones

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H: 6 in 
W:  3.25 in

D: 0.63 in

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Weight: 0.6 lbs

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Complete Your Power Setup

THE STANDARD FOR OFF-GRID RELIABILITY

PERFORMANCE FOCUSED

The Poseidon XL delivers 100 watts of output in a compact, TSA-compliant design—strong enough to power laptops, cameras, drones, and even Starlink Mini. It’s the new standard for field-ready energy.

PERFORMANCE FOCUSED

The Poseidon XL delivers 100 watts of output in a compact, TSA-compliant design—strong enough to power laptops, cameras, drones, and even Starlink Mini. It’s the new standard for field-ready energy.

SURVIVALIST RELIABILITY

In the backcountry or the battlefield, power isn’t optional—it’s survival. The Poseidon XL was engineered for extremes: fully submersible, drop-proof, and built to operate from –10°F to 120°F without losing charge. 

SURVIVALIST RELIABILITY

In the backcountry or the battlefield, power isn’t optional—it’s survival. The Poseidon XL was engineered for extremes: fully submersible, drop-proof, and built to operate from –10°F to 120°F without losing charge. 

OUR IDENTITY

Dark Energy builds power for the extremes—for people who don’t turn back when things get hard. The Poseidon XL represents everything we stand for: relentless performance, uncompromising strength, and the freedom to go further than ever before.

OUR IDENTITY

Dark Energy builds power for the extremes—for people who don’t turn back when things get hard. The Poseidon XL represents everything we stand for: relentless performance, uncompromising strength, and the freedom to go further than ever before.

Customer Reviews

Based on 2 reviews
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Gingerwoodworks
Game changer

I was given early access to this product and took it through its paces. Charging my camera equiptment, MacBooks and many other larger items on the spot has never been more effecient. Anywhere, anytime.

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Zach Owens
Insanely fast charging!

I was lucky enough to get to test the XL out early... and all I can say is the amount of time it took to charge my thermal batteries on a coyote hunt, was about twice as fast as plugging it i to a wall charger! This thing is a game changer!