Can a solar power bank charge a laptop?

Only if it outputs USB-C Power Delivery at 45W+. Most integrated solar banks output 18W or less — not enough for laptops. The Goal Zero Sherpa 100PD at 60W USB-C PD is the exception.

How long does it take to solar-charge a power bank?

Depends on solar panel wattage and battery capacity. A 20W panel charging a 20,000mAh bank needs about 4–6 hours of direct sun (accounting for efficiency losses). Overcast skies can extend this to 12+ hours.

Are solar power banks worth it?

For multi-day backpacking and camping off the grid — yes. For day hikes and car camping where you can charge at night — a standard power bank is simpler and cheaper.

Best Solar Power Banks in 2026: Charge Anywhere Off-Grid

A solar power bank lets you charge devices indefinitely off-grid as long as you have sunlight — critical for multi-day backpacking trips, extended camping, or emergency preparedness kits. The key spec most buyers get wrong is solar panel wattage: many 'solar power banks' have such small panels that a full recharge takes 50+ hours of direct sunlight.

Here are the best solar power banks of 2026, selected based on actual solar input wattage (not advertised capacity), battery capacity, charging output speed, and build quality for outdoor use.

What to Look For

Solar input vs. battery capacity: A 10,000mAh battery with a 2W solar panel takes 50+ hours to fully recharge from solar alone. Solar power banks are best used as supplemental charging — top off from solar when you can, but charge from wall power before trips.
Solar wattage: 5W+ solar input is the minimum for meaningful daily solar gain. 10–15W panels can add 2,000–4,000mAh per day in direct sun. Big standalone solar panels (Goal Zero, Anker) charge much faster than integrated panel banks.
Output ports: USB-A for older devices. USB-C PD (18W+) for phones and tablets. Some models include a 12V DC output for car-style accessories. Check that output wattage matches what your devices need.
Battery capacity: 10,000mAh charges a phone 2–3 times. 20,000mAh charges 4–6 times. 25,000mAh+ covers multiple devices on a multi-day trip.
IP rating: Outdoor power banks should be at least IP65 (dust-tight, water spray resistant). IP67 survives submersion. Don't buy an outdoor-marketed power bank without an IP rating.

Our Top Picks

#1 Best Overall

Anker 625 Solar Panel with PowerCore 20000

20W foldable solar panel · 20,000mAh bank · USB-C 18W PD + USB-A · IP67 bank · Charges phone 4-5x · 4-6 hrs panel-to-bank charge in direct sun · Best combined system

~$90 View on Amazon →

#2 Best Integrated

BigBlue 28W Solar Charger with 10000mAh Battery

28W integrated panel array · 10,000mAh · 3 USB-A ports · Carabiner loops · IPX4 resistant · Best for backpackers who want one piece of kit

~$65 View on Amazon →

#3 Best Compact

BLAVOR Solar Charger Power Bank 10000mAh

10,000mAh · Qi wireless charging · 5W solar panel · USB-C in/out · Rugged design · IPX5 · LED torch · Carabiner · Best pocket-sized solar bank for day trips

~$35 View on Amazon →

#4 Best Emergency

Goal Zero Sherpa 100PD

25,600mAh · 60W USB-C PD · Pairs with Goal Zero Nomad solar panels · Charge indicator · Works as a laptop power bank · Best serious expedition and emergency power hub

~$200 View on Amazon →

Bottom Line

The Anker 625 system (20W panel + 20,000mAh bank) is the most practical setup for multi-day camping — the panel charges the bank in 4–6 hours of direct sun, which means a full recharge each day on a sunny trip. For a compact all-in-one, the BigBlue 28W delivers the best solar input of any integrated design.