A carefully selected list of the most compact and lightweight battery packs designed for thru-hikers and ultralight adventurers. These power banks prioritize minimal weight and volume while delivering essential charging capabilities for phones and GPS devices on long-distance trails.
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An exceptionally compact power bank that weighs just 1.35 ounces. It offers 5000mAh capacity with USB-C input/output, making it ideal for hikers who need a reliable top-up without adding bulk to their pack.
Features a foldable USB-C plug for direct cable-free charging, saving space in your kit. Weighing only 2.6 ounces, it provides fast charging speeds for smartphones while maintaining a very low profile for backcountry travel.
This is a heavy outdoor generator and is not suitable for ultralight backpacking. It weighs over 12 pounds and is excluded from this list to maintain the focus on truly lightweight gear.
A rugged, waterproof power bank weighing 4.6 ounces with 9200mAh capacity. It includes built-in cables for Apple and Android devices, offering durability and convenience for trail use without requiring separate cords.
One of the lightest 3680mAh batteries available at just 1.5 ounces. It features dual USB outputs allowing you to charge two devices simultaneously, perfect for couples or carrying a phone and headlamp.
Known for its tiny size and 10000mAh capacity, weighing roughly 5.5 ounces. It supports high-speed charging protocols and is a popular choice among international hikers for its balance of weight and endurance.
While not a battery, this 21W solar panel is essential for ultralight power generation on multi-day trips. It weighs 10.2 ounces and folds into a compact square, providing renewable energy for compatible power banks.
Heavier but capable of charging laptops, weighing 1.5 pounds. Included here as an option for tech-heavy hikers who need to charge tablets or ultrabooks, though it deviates from strict ultralight standards.
Features a built-in battery management system and weighs 6.7 ounces for 10000mAh. It includes a unique digital display showing remaining capacity and supports pass-through charging for seamless solar recharging scenarios.
A compact 20000mAh bank weighing around 10.7 ounces with bidirectional fast charging. It is one of the highest density options available, suitable for base camp or longer expeditions where weight is less critical.
Combines a solar panel with a 16750mAh battery in a rugged shell. While heavier at 12.8 ounces, it offers an integrated solar charging solution for extended backcountry trips where resupply is scarce.
Offers massive capacity in a relatively slim form factor, weighing 12.7 ounces. It supports 18W fast charging and can charge multiple devices, making it a versatile choice for group hikes or longer gear carries.
Features a built-in hand-crank generator and solar compatibility, weighing 4.8 ounces. It provides emergency charging capabilities through multiple methods, appealing to safety-conscious backpackers venturing into remote areas.
A slim profile power bank weighing 6.4 ounces with 10000mAh capacity. Its flat design allows it to fit easily into jacket pockets or small side pockets, offering easy access while minimizing pack space usage.
An affordable option weighing 6.2 ounces with dual USB outputs. It provides reliable charging for smartphones and small electronics, serving as a budget-friendly solution for casual hikers and weekend warriors.
Includes built-in Lightning and USB-C cables, weighing 9.1 ounces. The integrated cables reduce clutter and the risk of losing cords, making it a convenient choice for minimalist packers who want fewer components.
A high-capacity solar bank weighing 1.2 pounds with three USB ports. It is designed for longer expeditions where heavy device usage is expected, offering robust solar recharging capabilities for extended off-grid stays.
Weighs 10.2 ounces with 20000mAh capacity and LED flashlight functionality. It is a sturdy, no-frills power bank that provides essential charging and illumination, suitable for budget-conscious backpackers.
A 2-in-1 device combining a fast wall charger with a power bank, weighing roughly 10 ounces. It supports high-wattage output for laptops and phones, reducing the need to carry separate adapters and batteries.
Weighs just 3.5 ounces with 5000mAh capacity and features a unique transparent design. It supports ultra-fast charging protocols and is one of the lightest options on the market for daily carry and short trips.