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Dark Energy built their reputation in the Wasatch Mountains of Utah, where days-long backcountry trips in punishing conditions have a way of exposing exactly how much you can rely on your kit. The Poseidon series is their answer to a dead phone at the worst possible moment – a range of rugged, waterproof power banks that runs from the pocket-sized Nano right up to the expedition-grade XL, which packs enough power to charge a laptop or keep a Starlink Mini running off-grid. Every model is built to take a beating – we're talking IP67 or IP68 waterproofing, extreme temperature resistance, and the kind of drop-proofing that's earned the brand a following among hikers, campers and the US special forces alike.
This power bank survived shotgun testing, handles 45 minutes fully submerged, and works from -15°C to 100°C whilst delivering 30 hours of smartphone charge.
