*Poseidon XL is sold out!*
All orders containing Poseidon XL will begin shipping 6/4

Poseidon XL Power Bank

Poseidon XL Power Bank
Poseidon XL Power Bank
Poseidon XL Power Bank
Poseidon XL Power Bank
Poseidon XL Power Bank
Poseidon XL Power Bank
Poseidon XL Power Bank
Poseidon XL Power Bank

Poseidon XL Power Bank

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.

Included in the box:
- Poseidon XL Powerbank
- 3ft 100W USB-C to USB-C Cable
Title
Quantity
$249.99
$249.99

*All orders containing Poseidon XL will begin shipping 6/4

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.

Included in the box:
- Poseidon XL Powerbank
- 3ft 100W USB-C to USB-C Cable
Title

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 a 5 year Dark Energy 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: When do I get my Poseidon XL?

A: Orders including Poseidon XL begin shipping 12/1.

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. 

Title

Q: How do I reset the Poseidon XL?


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

Title

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. 

Q: What comes with the Poseidon XL


A: In each box is a Poseidon XL and a 100W 3 foot USB-C to USB-C Cable

Title

Compare

Poseidon XL

Title

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

Title

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

Title

IP68 waterproof & dustproof

Title

Power for Laptops

Title

H: 8.35 in 
W:  6.2 in

D: 1.61 in

Title

Weight: 2.5 lbs

Title

Poseidon Pro

Title

2–3 full phone charges (10,000 mAh)

Title

2 USB-C + 1 USB-A outputs

 

Title

IP68 waterproof & dustproof

Title

Power for Phones

Title

H: 6 in 
W:  3.25 in

D: 0.63 in

Title

Weight: 0.6 lbs

Title

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 35 reviews
97%
(34)
3%
(1)
0%
(0)
0%
(0)
0%
(0)
M
M.D.

Fast delivery

G
Griffin R
Great for backup

I originally got the Poseidon XL for camping trips but honesty, I just leave it in my truck to use every day because it is so convenient. We can charge multiple phones at a time and it keeps a charge no matter what. I found it under a seat in the winter and it still had a full charge, even with it being cold. I'm a believer in Dark Energy products.

A
Ashley
Excellent Customer Service!

Besides the fact that all of Dark Energy’s products are great, their customer service is EVEN BETTER! Purchased two items that became faulty eventually, and Dark Energy replaced both with no hassle. Such a breath of fresh air when paying top dollar for things these days! Hoping to purchase their Solar Generator soon, as I feel confident in their warranty.

J
Jesse

Definitely ready to test it on expeditions!!!

S
Samuel

The thoughts of it is very valuable.

123