There’s no feeling quite like the dread of seeing your phone your map, camera, and lifeline flashing its final 1% of battery when you’re miles from the nearest outlet. This isn’t just an inconvenience; it’s a genuine safety risk, as a dead phone is a key factor in a growing number of search-and-rescue missions. A standard power bank only delays the inevitable before it becomes useless weight in your pack.
A solar power bank is the answer. It’s a personal, renewable power source that continually tops itself up using sunlight. This provides the freedom to explore without battery anxiety, ensuring your essential devices are always ready for navigation, communication, or an emergency. It’s less of a gadget and more of an essential piece of gear for modern outdoor safety and peace of mind.
Considerations When Choosing Solar Power Bank
The most important considerations are capacity, charging speed/ports, solar panel efficiency, durability/weatherproofing, weight/size, and realistic solar performance for the intended trip length and devices.
- Capacity: 10,000–20,000 mAh for day hikes/overnights; 20,000–26,800 mAh for multi‑day trips or multiple devices.
- Solar reality: On‑bank panels are range extenders; expect slow, weather‑dependent refills—wall‑charge fully before departure.
- Panel setup: Folding panels + bank yield better daily harvest; keep panels clean, angled to direct midday sun.
- Ports/protocols: Prefer USB‑C PD in/out; check input/output wattage to meet fast‑charge thresholds and reduce recharge time.
- Multiple outputs: Charge two or more devices simultaneously; confirm total shared wattage supports intended load.
- Durability: Seek real IP ratings (IP66–IP67), covered ports, ruggedized shells, and drop protection for outdoor reliability.
- Weight/size: Balance mAh and panel size against carry weight; ultralight kits favor smaller banks and compact panels.
- Safety: Overcharge, overheat, and short‑circuit protections plus CE/FCC/RoHS certifications and reputable warranties.
- Usability: Passthrough charging, accurate power meter/percentage display, and simple status LEDs aid field management.
- Lighting: Integrated flashlight/SOS is practical for camp tasks and emergencies on rugged models.flipkart+1
- Trip planning: Day hikes—compact 10–15K mAh PD; Weekend treks—20–26.8K mAh PD plus small foldable panel; Basecamp—larger panels or a portable power station.
- Market check: Verify specs and ratings against trusted testing; prioritize PD support, IP rating, and realistic solar expectations.
Best Solar Power Banks for Outdoor Use 2025
| Power Bank Name | Key Features | Starting Price | Capacity | Water/Dust Resistance |
| Anker PowerCore Solar 20000 | 20,000mAh, IP65 rating, 18W USB-C, built-in flashlight | $69.99 | 20,000mAh | IP65 |
| BLAVOR Solar Power Bank | 10,000mAh, Qi wireless charging, compass, flashlight | $39.99 | 10,000mAh | IPX5 |
| Feelle 25000mAh Solar Power Bank | 25,000mAh, 4 solar panels, fast charging, rainproof | $49.99 | 25,000mAh | Rainproof |
| Goal Zero Venture 70 | 17,700mAh, IPX67 rating, smart charging, rugged build | $149.95 | 17,700mAh | IPX67 |
| BigBlue SolarPowa 28 | 28W SunPower solar panels, dual USB-A, ammeter | $79.99 | N/A (Solar Panel) | Water-resistant |
| TrustBasket Solar Power Bank 20000mAh | 20,000mAh, 4 solar panels, 3 outputs, LED flashlight | $39.99 | 20,000mAh | Rugged |
| Hiluckey HI-S225P | 25,000mAh, 4 foldable solar panels, dual USB output | $45.99 | 25,000mAh | Water-resistant |
| Mregb 42800mAh Power Bank | 42,800mAh, QC 3.0, IP67 rating, ultra-bright LED | $59.99 | 42,800mAh | IP67 |
| BioLite Charge 100 | 25,000mAh, 100W USB-C PD, FAA compliant, wireless charging | $179.95 | 25,000mAh | N/A |
| Xtorm Solar Charger | 10,000mAh, 20W USB-C PD, foldable solar panels, IP65 | $109.00 | 10,000mAh | IP65 |
Anker PowerCore Solar 20000
Anker, a brand known for its reliable charging technology, launched the PowerCore Solar 20000 as part of its rugged line of portable power solutions. This model is designed to endure demanding outdoor conditions while providing a substantial power reserve. The solar panel on this device is intended for emergency use or to top off the battery, not as a primary charging method.
Its 20,000mAh capacity is sufficient to charge most smartphones multiple times, making it a reliable companion for extended trips. The brand’s focus on user safety is evident in its MultiProtect safety system, which provides surge protection and temperature control. It’s a pragmatic choice for users who need a powerful and durable backup battery with the added benefit of solar charging.
- 20,000mAh capacity
- IP65 dust and splash-proof rating
- 18W USB-C output and input
- Integrated emergency flashlight with three modes
BLAVOR Solar Power Bank
BLAVOR’s solar power banks have a reputation for integrating useful, adventure-focused features into their devices. The BLAVOR Solar Power Bank is no exception, offering a combination of power, convenience, and safety tools. Launched to cater to hikers and campers, its standout feature is the Qi wireless charging pad, which eliminates the need for cables.
The built-in compass and dual-LED flashlight further enhance its utility in a survival situation. While its 10,000mAh capacity is lower than some others on this list, it strikes a balance between a compact size and sufficient power for short trips or as a daily-carry option.
- 10,000mAh capacity
- Qi wireless charging pad
- Built-in compass and dual-LED flashlight
- IPX5 waterproof, dustproof, and shockproof
Feelle 25000mAh Solar Power Bank
The Feelle 25000mAh Solar Power Bank stands out with its four foldable solar panels, which significantly increase the solar charging efficiency compared to single-panel models. This design choice makes it a more practical solution for recharging via sunlight, especially on long, sunny days.
It offers a large capacity of 25,000mAh, capable of charging tablets and multiple devices. The multiple output ports allow for charging several devices at once, a useful feature when traveling with others. Its rugged, rainproof design ensures it can handle exposure to the elements during your outdoor activities.
- 25,000mAh capacity
- Four foldable solar panels
- Dual 2.1A USB ports
- Integrated LED flashlight
Goal Zero Venture 70
Founded by Robert Workman, Goal Zero has long been a key player in the portable solar power industry, with a mission to empower people with reliable energy solutions. The Venture 70 reflects this commitment with its rugged, high-performance design.
The device’s IPX67 rating means it is fully waterproof and dust-tight, able to withstand temporary immersion in water.
With a 17,700mAh capacity and smart charging technology, it delivers optimized power to devices and is an ideal choice for serious adventurers, photographers, and professionals who need durable and reliable power in challenging environments.
- 17,700mAh capacity
- IPX67 waterproof and dust-tight
- Smart charging for efficient power delivery
- Integrated USB-C and USB-A ports
BigBlue SolarPowa 28
Unlike a traditional power bank, the BigBlue SolarPowa 28 is a portable solar panel system that doesn’t have an internal battery. Instead, it’s designed to charge devices directly or to charge a separate power bank.
Its standout feature is the use of high-efficiency SunPower solar cells, which offer a conversion rate of up to 24%, a notable improvement over many standard panels.
The inclusion of an ammeter allows users to monitor the current power input from the sun, helping them find the optimal angle for charging. This is an excellent choice for backpackers and long-term campers who prioritize lightweight gear and direct charging capability.
- 28W high-efficiency SunPower solar panels
- No internal battery, charges devices directly
- Built-in ammeter to measure charging current
- Water-resistant design
TrustBasket Solar Power Bank 20000mAh
TrustBasket’s 20,000mAh solar power bank is built for durability and multiple-device charging. It features a rugged, compact build designed to withstand the drops and bumps that come with outdoor use.
With four solar panels, it offers a more efficient solar charging experience than single-panel alternatives, though it’s still best used to top off the battery in a pinch.
The three output ports (2 USB and 1 Type-C) allow for charging three devices simultaneously, a handy feature when traveling with family or friends. A multi-mode LED flashlight is also included, adding to its emergency preparedness capabilities.
- 20,000mAh capacity
- Four foldable solar panels
- Three output ports (USB-A and USB-C)
- Compact, rugged build with LED flashlight
Hiluckey HI-S225P
The Hiluckey HI-S225P is a high-capacity solar power bank with a practical, foldable design. It features four solar panels that provide a larger surface area for sun exposure, making solar charging more effective for off-grid use. With a 25,000mAh capacity, it provides multiple charges for smartphones and other small electronics.
The dual USB outputs enable simultaneous charging of two devices. The device’s rugged exterior and water-resistant properties make it a good fit for camping, hiking, and other outdoor activities where exposure to the elements is common.
- 25,000mAh capacity
- Four foldable solar panels
- Dual USB outputs
- Water-resistant build
Mregb 42800mAh Power Bank
For those who need a truly massive power reserve, the Mregb 42800mAh power bank is an impressive option. This device boasts a substantial capacity that can keep multiple devices powered for days.
It is built to be extremely durable, with an IP67 rating for superior water and dust resistance, making it suitable for even the most extreme outdoor conditions.
The inclusion of Quick Charge 3.0 technology ensures rapid charging for compatible devices, while the built-in ultra-bright LED flashlight offers a long-range beam for nighttime use.
- 42,800mAh ultra-high capacity
- IP67 waterproof and dust-tight rating
- Quick Charge 3.0 technology
- Built-in flashlight with a long range
BioLite Charge 100
BioLite, a brand dedicated to creating innovative off-grid energy solutions, designed the BioLite Charge 100 to meet the needs of modern adventurers. It features a high 25,000mAh capacity with a powerful 100W USB-C Power Delivery (PD) output, making it capable of charging not only phones but also laptops and other larger devices.
Its design is FAA carry-on compliant, making it an excellent choice for air travel. While it lacks an integrated solar panel, it can be paired with a compatible BioLite solar panel for a complete off-grid charging setup.
- 25,000mAh capacity
- 100W USB-C Power Delivery (PD)
- FAA carry-on compliant
- High-efficiency charging for laptops and larger devices
Xtorm Solar Charger
Xtorm is a brand focused on creating reliable, compact power solutions for active lifestyles. The Xtorm Solar Charger is a testament to this, combining a moderate 10,000mAh capacity with a durable, outdoor-ready design.
The device features integrated foldable solar panels and a kickstand, allowing for easy positioning to capture maximum sunlight.
With a 20W USB-C PD port, it offers fast charging for a variety of devices. The IP65 rating provides excellent protection against water jets and dust, ensuring it holds up in outdoor environments.
- 10,000mAh capacity
- Foldable solar panels with kickstand
- 20W USB-C Power Delivery (PD)
- IP65 rating
FAQs
How long do solar power banks take to charge with sunlight?
Solar charging is a slow process, typically taking 30 to 50 hours or more of direct sunlight to fully charge a 20,000mAh power bank. It is intended for emergencies and to top up the battery, not as the primary charging method.
Can a solar power bank charge devices on a cloudy day?
Yes, but charging will be much slower and less efficient. Solar panels require direct sunlight to work effectively, so a cloudy day will significantly reduce the power input.
Are solar power banks waterproof?
Many solar power banks are designed to be water-resistant or waterproof, often with an IP (Ingress Protection) rating. Check the product specifications for its specific IP rating to determine its level of protection.
What devices can I charge with a solar power bank?
You can charge a wide range of USB-powered devices, including smartphones, tablets, cameras, GPS units, and smartwatches. High-wattage power banks can even charge laptops.
How are solar power banks different from regular power banks?
You can charge a wide range of USB-powered devices, including smartphones, tablets, cameras, GPS units, and smartwatches. High-wattage power banks can even charge laptops.
How are solar power banks different from regular power banks?
The main difference is the inclusion of a solar panel. While both can be charged via a wall outlet, a solar power bank can also generate power from sunlight, providing a crucial backup when you’re off-grid.
Is it safe to leave a solar power bank in the sun?
It is safe to leave them in the sun, but you should avoid leaving them in extreme heat for extended periods, as this can affect the battery’s lifespan.
What size solar power bank do I need?
This depends on your use case. For occasional use, a 10,000mAh to 20,000mAh unit is sufficient. For multi-day trips or charging multiple devices, a larger 25,000mAh+ capacity is recommended.
Can solar power banks be used for home emergencies?
Yes, they are an excellent addition to an emergency kit. Their ability to recharge using only sunlight means they can provide power for communication and light during a power outage.
Conclusion
For outdoor enthusiasts, having a reliable power source is not just a convenience but a necessity. The solar power banks listed above offer a variety of features, capacities, and durability ratings to meet different needs. Whether you prioritize a high-capacity model like the Mregb 42800mAh, the ruggedness of the Goal Zero Venture 70, or the added utility of the BLAVOR with its wireless charging and compass, there is a perfect option for your next adventure.
While solar charging is a slow process best used as a backup, these devices provide the peace of mind that you will never be left without power when you need it most. By choosing a solar power bank that aligns with your specific needs, you can ensure your devices stay powered, keeping you connected and safe on any outdoor excursion.
