9 Best Ultralight Backpacking Solar Charger 2025 in the United States

The Power-Bank-Solar-Charger offers a substantial battery capacity of 42800mAh, which is great for long trips where power outlets are scarce. This large capacity means you can charge your devices multiple times before needing to recharge the power bank itself. It is designed with durability in mind, being waterproof, drop-proof, and dust-proof, making it suitable for rugged outdoor use.

The built-in super bright LED flashlight is a handy addition for camping or emergency situations. With two USB output ports, you can charge multiple devices simultaneously, and if your device supports it, you can benefit from the QC3.0 fast charging protocol for quicker power-ups. However, at 1.34 pounds, it may be considered heavy for ultralight backpacking, where every ounce matters.

Additionally, while it has a solar charging feature, the solar panel’s efficiency is low, and it should be relied upon only in emergencies rather than as a primary charging method. Regular charging through a wall outlet is recommended for faster results. If your priority is a high-capacity, rugged power bank with some solar capability, this could be a great option, but for ultralight backpacking, the weight might be a significant drawback.

The BLAVOR Solar Charger offers excellent power output with its 20000mAh battery capacity, allowing multiple charges for a variety of devices, including smartphones, tablets, and even MacBooks. This makes it highly beneficial for ultralight backpackers who need reliable power sources for extended trips. Additionally, its 20W fast charging capability ensures quick power-ups, a crucial feature when time is of the essence. The built-in cables and multiple charging ports (including USB-C, USB-A, and iOS) increase its compatibility with a wide range of devices, making it versatile for different users' needs.

Moreover, its wireless charging area for Apple Watch adds a unique touch, enhancing its functionality for users with multiple devices. The BLAVOR charger is designed with portability in mind, equipped with a flashlight, camping light, compass, and other accessories that are useful for outdoor activities. Its compact design (1.5 x 3.85 x 7.28 inches and weighing 1.72 pounds) makes it relatively portable, although it could be lighter for ultralight backpacking standards. Durability is a strong point, with waterproof, shockproof, and dustproof features ensuring it can withstand harsh outdoor conditions.

However, the weight and size might be a bit cumbersome for those truly focused on ultralight backpacking. The integrated safety features like overcharging and short-circuit protection help ensure safe usage, which is a huge plus for peace of mind during trips. Although it excels in many areas, it's worth noting that relying solely on solar charging might be slow under less than ideal sunlight conditions, so having alternative power sources is advisable. In summary, the BLAVOR Solar Charger is a robust and feature-rich option for ultralight backpackers, though those prioritizing minimal weight may find it slightly heavy.

The BigBlue 28W Solar Charger is a solid choice for ultralight backpackers needing a reliable power source on the go. Weighing just 1.5 lbs and folding down to a compact size of 11 x 6 x 1.4 inches, it's easy to carry in your backpack without adding much weight. This makes it convenient for camping trips or hiking expeditions where power sources are scarce.

Its three USB ports, each with a maximum output of 5V/2.4A, allow you to charge multiple devices simultaneously, which is a great feature for group outings. However, if one device requires a lot of power, it limits the charging ability of the other ports, so plan your device use wisely.

The solar panels have a high conversion rate, converting up to 25.4% of solar energy into usable power. This efficiency is beneficial, especially in direct sunlight, but the performance can drop significantly on cloudy days or under unfavorable conditions. The use of Back Contact solar cells enhances durability, reducing heat buildup and increasing longevity, which is a plus for outdoor use.

On the downside, this charger does not store energy, meaning you need direct sunlight for charging, and it’s not suitable for larger devices like laptops. Additionally, the junction box is not waterproof, so you must be cautious during heavy rain.

The BigBlue solar charger is well-suited for anyone needing a lightweight, portable solution for charging small electronics while outdoors. Its limitations in power storage and charging larger devices could be drawbacks for some users, but for ultralight backpackers, it offers a practical solution for staying connected on the trail.