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Poseidon XL is a near-bulletproof power bank for serious outdoor adventures

The book-sized gadget punches well above its weight class with enough juice to fully recharge a small laptop.

By Mike Richard Jan 15, 2026 6:31 PM

Photography, Clothing, Pants — Dark Energy

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Even the most hardcore, tech-averse campers are packing digital cameras, drones, portable electric fridges, and more for their off-grid escapes. All those gadgets require serious power, but even the best power stations are big, bulky, and barely portable. That’s where Dark Energy’s Poseidon XL comes in.

It’s a compact power bank that measures roughly the size of a hardcover book. But it punches well above its weight class. The 27,000mAh lithium-ion battery provides more than a full charge for most 13-inch laptops. That’s courtesy of a 100-watt USB-C port that allows for lightning-fast output and input. With dual USB-A and dual USB-C ports, it’s also capable of topping up most smaller electronics, from smartphones and tablets to full-size DSLR cameras and even a Starlink Mini. A built-in 1- or 2-hour timer helps conserve energy and prevent accidental overnight drains.

But what truly sets the Poseidon XL apart is the build. It’s built to exceed MIL-STD-810G standards to withstand drops, dust, and crushes. Plus, the IP68 rating means it’s not just splashproof but waterproof and fully submersible up to six feet for up to 45 minutes. It’s all wrapped in an ultra-rugged polycarbonate housing with reinforced corners and a diamond-textured grip to keep it from slipping out of your hand.

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The Poseidon XL is available directly through DarkEnergy.com for $249.99 for the standalone unit. But I’d highly recommend splashing out on the Basecamp Bundle, which adds a 65-watt, dual-port wall adapter, plus a 56-watt solar panel and an accessory kit, so you’ll never be without power.

Mike Richard has traveled the world since 2008. He’s kayaked in Antarctica, tracked endangered African wild dogs in South… Read Full Bio

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Camping

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Jack Carr

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