I’ve been lugging the Nitecore NB 10000 around for my last few thru-hikes, and it’s basically the Goldilocks of trail power banks-not too bulky like those brick-sized Ankers that double as bear bait, not too puny like the “ultralight” ones that die after one GPS ping. 10,000mAh, under 200g, IPX5 waterproof, and it dishes out legit 18W PD charging to keep my Garmin and phone alive through a soggy 50-miler. Pro tip for the watt-wasters out there: pair it with a short Lightning/Micro-USB cable (ditch the stock ones-they’re noodle-armed), and you’ll squeeze an extra 20% out of it. What’s your go-to, or are you still faith-healing your battery with good vibes?