Best Solar Power Banks for 2026

The Vikeri Solar Power Bank 26800mAh is our top pick for UK buyers who want a genuinely waterproof solar charger with real outdoor credentials. It handles British drizzle, clips to a rucksack, and has enough capacity to charge your phone six or seven times before you need to look for a plug socket.

Before you buy any model, it’s worth understanding how solar power banks actually work. The solar panel tops up the battery slowly over the course of a day. You’re not plugging your phone into sunlight, you’re building charge in the battery, then using the battery to charge your devices. On a good UK summer day, a single solar panel adds roughly 500 to 1,500mAh. That’s one extra phone charge per sunny day. On overcast days, the panel adds very little. Capacity and charging speed matter more than solar panel size for most buyers.

Our Top Picks

8 Best Solar Power Banks for UK Buyers

1. Vikeri Solar Power Bank 26800mAh

The Vikeri earns its top spot through a combination that’s hard to argue with at £23.52: genuine IP67 waterproofing, a 26,800mAh capacity that’s large enough to matter on multi-day trips, and a form factor that doesn’t feel like you’re carrying a house brick. It clips to the outside of a rucksack via the carabiner, which is the right way to use a solar power bank, panel facing the sky while you walk, topping up without any extra effort.

In practice, you get four output ports (three USB-A and one USB-C), plus a built-in LED flashlight and a compass. None of these feel like box-ticking extras. The flashlight is bright enough to be useful at a campsite. The compass is one fewer thing to pack. And the three USB-A ports means you can charge multiple devices simultaneously without an adapter, which matters when you’re sharing power with other people on a camping trip.

The solar input is honest. A single panel on a UK July day adds around 1,000 to 1,500mAh. That’s about one additional phone charge per full sunny day. Clip it to a sunny surface when you can, treat the mains charge as your base, and the solar becomes a reliable daily bonus. It won’t disappoint you because it doesn’t overpromise.

There’s no wireless charging, and the USB-C output caps at standard speeds rather than PD fast charging. If you specifically need 20W+ USB-C output, the WOWMVP below is the one to look at. But for most hikers, campers, and festival-goers who want a dependable outdoor power bank that happens to also harvest some solar energy, the Vikeri is the right call.

Features

• 26,800mAh capacity: 6-7 smartphone charges
• IP67 waterproof and dustproof
• 4 output ports: 3x USB-A, 1x USB-C
• Built-in LED flashlight and compass
• Carabiner clip for rucksack attachment
• Solar panel for outdoor top-up charging

2. BLAVOR Solar Power Bank 20000mAh with Built-in Cables

BLAVOR is one of the most reviewed solar power bank brands in the UK, and this 20,000mAh model with four built-in cables is the one to buy if you want to leave your cable bag at home. The two USB-C cables, one iOS cable, and one USB-A cable cover every phone type you’re likely to encounter in a group. And that’s exactly when this product earns its money. Add a camping light and a flashlight, and you’ve got a genuinely multipurpose outdoor companion.

The 20W USB-C fast charging is properly fast. Connected to a compatible charger, a modern Android phone goes from flat to 80% in around an hour. The wireless charging pad at 15W handles the newer Qi2 compatible devices comfortably, including Apple Watch charging which is a rarity at this price bracket.

At £56.99, it’s the second most expensive pick here, and that price is mostly justified by the build quality and the 1,422 reviews that confirm it holds up over time. The trade-off is weight: the cable housing adds bulk, and it’s noticeably heavier than the Vikeri. The solar panel is also small relative to the battery size, so solar input here is slower than the quad-panel option below.

Features

• 20,000mAh capacity
• 4 built-in cables: 2x USB-C, 1x iOS, 1x USB-A
• 20W USB-C fast charging
• 15W wireless charging, including Apple Watch
• Built-in camping light and flashlight
• 1,422 customer reviews at 4.3 stars

3. Riapow Solar Power Bank 20000mAh Wireless

The Riapow is the most-reviewed product in this roundup with 1,824 ratings at 4.2 stars, which matters when you’re buying a product from a brand you’ve never heard of. Those reviews tell you that thousands of real buyers have used this and found it worth rating. It delivers 22.5W wireless charging, genuinely fast for a wireless pad, alongside two built-in cables and a USB-C fast charge port, at £29.99. That’s a strong package.

Where it sits in the lineup is the mid-range wireless charging slot. The BLAVOR above costs nearly twice as much and offers Apple Watch support and more cables. The Riapow skips Apple Watch but gives you fast wireless charging at a more accessible price. If your phone supports Qi wireless charging (virtually all modern smartphones do) and you want to avoid cable faff at a campsite or festival, the Riapow does the job well.

The solar panel is consistent with other single-panel models in this size class. It is useful for a top-up on sunny days, not a primary charging source. The design is chunky but not excessively so for a 20,000mAh wireless bank.

Features

• 20,000mAh capacity
• 22.5W wireless charging output
• 2 built-in cables (USB-C and USB-A)
• USB-C PD fast charging port
• Solar panel for outdoor top-up
• 1,824 customer reviews

4. A ADDTOP Solar Power Bank 20000mAh 5-Port

The A ADDTOP stands out for the sheer number of devices it can power at once, with five outputs with three built-in cables (USB-C, iOS, and USB-A) means you can charge five people’s devices simultaneously. At £29.91, this is the right pick when you’re leading a group on a hiking weekend or managing a family camping trip where everyone needs topping up. Dual flashlights (one per side) add to the practical outdoor package.

With 1,232 reviews at 4.2 stars, it’s a well-tested product at a reasonable mid-range price. The 15W maximum output is slower than the 22.5W models above, so individual devices charge more slowly. But when you’re sharing power across five ports, raw speed per port matters less, you’re prioritising breadth of coverage.

No wireless charging here, and the solar panel delivers the same supplemental top-up as other single-panel models. But the five-device simultaneous charging capability genuinely earns its place in this roundup as the go-to group charger.

Features

• 20,000mAh capacity
• 5 output ports simultaneously
• 3 built-in cables: USB-C, iOS, USB-A
• Dual LED flashlights
• 15W max output
• 1,232 customer reviews

5. WOWMVP Solar Power Bank 26800mAh Fast Charging

If fast USB-C charging is the priority, the WOWMVP is the one to pick. Its 22.5W bidirectional USB-C PD port charges a modern smartphone from flat to 60% in around 30 minutes, useful when you have limited time at a plug point before heading back outdoors. It also charges the power bank itself via USB-C at 22.5W, cutting full recharge time to around four hours compared to six or more hours on slower models.

The 26,800mAh capacity at £26.99 is honest value. Waterproofing handles UK outdoor conditions reliably. The trade-off is a lower review count of 62 ratings compared to the top three picks, it’s a newer product and less proven at scale. The fundamentals are right, but if review count is a deciding factor for you, the Vikeri or Riapow offer similar specs with considerably more real-world validation.

Features

• 26,800mAh capacity
• 22.5W bidirectional USB-C PD fast charging
• 3 outputs, 2 inputs
• Waterproof construction
• LED flashlight
• Charges phone from 0% to 60% in 30 minutes

6. Solar Power Bank 20000mAh with 4 Foldable Panels

Every other product in this roundup has a single integrated solar panel. This one has four foldable panels that open like a book, giving 300% more solar surface area than a standard single-panel design. That matters in the UK. Where a single panel adds 500 to 1,500mAh on a decent summer day, four panels can add 2,000 to 4,000mAh under the same conditions, enough to charge a phone two or three times from solar alone on a good day.

For anyone spending multiple days genuinely off-grid, such as wild camping, long-distance walking, or sailing, the extra solar input changes the maths considerably. You’re less dependent on finding a mains point, and the battery lasts longer between planned charges. The built-in cables are an added convenience. At £35.99, the premium over single-panel models is justified if solar input is genuinely important to you rather than a marketing feature you won’t use.

Features

• 20,000mAh capacity
• 4 foldable solar panels, giving 300% larger solar surface area
• USB-C input/output with 15W fast charging
• Built-in cables included
• LED flashlight
• 127 customer reviews at 4.2 stars

7. BLAVOR Solar Power Bank with Hand Crank 20000mAh

The hand crank is the defining feature here, and it’s worth being clear about what it does and doesn’t do. One minute of cranking generates approximately five minutes of emergency LED light, not meaningful power for your phone, but enough to illuminate a tent, read a map, or signal for help. As a backup when the battery is depleted and there’s no sun, the crank means you’re never entirely without light. That’s the specific scenario this product solves.

Beyond the crank, this BLAVOR offers dual solar panels (genuinely faster solar top-up than single-panel models), 15W wireless charging, and four built-in cables covering every phone type. At £59.98 it’s the most expensive option here. It’s the right buy for mountain leaders, adventure guides, and anyone whose safety genuinely depends on having a last-resort power source, not for the average festival-goer who could save £36 with the BLAVOR built-in cable model above.

Features

• 20,000mAh capacity
• Hand crank generator for emergency power
• Dual solar panels for faster solar top-up
• 15W wireless charging
• 4 built-in cables: USB-C, iOS, USB-A
• Built-in camping light and flashlight

8. Solar Charger Power Bank 20000mAh (Budget Pick)

At £18.99, this is the most affordable entry in the roundup, and 415 reviews confirms it’s a real product that works as described. Four USB-A outputs let you charge multiple devices at once, the LED flashlight is functional, and the 20,000mAh capacity is the same as the mid-range models. You lose fast charging, wireless charging, and IP-rated waterproofing, but if you want to try solar power bank ownership without committing significant money, this is a sensible starting point.

It’s worth being honest: there is no USB-C PD port, so you’re relying on standard 5-10W USB-A charging throughout. A modern smartphone takes 2-3 hours to fill from flat. And without a waterproof rating, you’ll want to keep this out of heavy rain. For casual outdoor day trips and festivals where you can keep it in a bag, the budget pick does the job. For serious multi-day trips in variable British weather, invest in the Vikeri.

Features

• 20,000mAh capacity
• 4 USB-A output ports
• Bright LED flashlight
• Solar charging panel
• 415 customer reviews at 4.2 stars
• £18.99, the most affordable option here

Solar Power Bank Buying Guide

Key Takeaways

• Solar panels are a top-up source. Expect 500 to 1,500mAh per sunny UK day from a single panel, or 2,000 to 4,000mAh from a quad-panel model
• 20,000mAh charges a modern smartphone 4 to 5 times; 26,800mAh delivers 6 to 7 charges
• USB-C PD at 18 to 22.5W charges most modern phones from flat to 80% in around an hour; standard USB-A takes 2 to 3 hours
• IP67 is the minimum waterproof rating worth trusting for UK outdoor use. IP65 is splash-resistant only.
• Built-in cables are a genuine travel convenience, not just a gimmick, especially in group settings
• Hand crank models add emergency light capability, not meaningful phone charging. Useful for safety-critical outdoor use
• Always charge the power bank fully from the mains before a trip. That’s your main power source.

Solar as a Top-Up, Not a Primary Charger

The single most important thing to understand about any solar power bank is that the solar panel tops up a battery. It doesn’t replace mains charging. In direct UK summer sun (roughly 6 hours of usable solar input on a good day in July), a single solar panel on a 20,000mAh bank adds approximately 500 to 1,500mAh. That’s one extra phone charge from a full day of sun exposure. On overcast days, the panel generates almost nothing useful.

This is why the advice is always the same: charge your power bank fully from the mains the night before you leave. The battery is your primary power source. The solar panel is a bonus that extends the bank’s useful life between mains charges. Buyers who understand this are satisfied with their purchase. Buyers who expect the solar panel to be the main power source are disappointed.

The exception is the quad-panel model (our sixth pick), which adds meaningfully more solar input across a day. On a full UK summer day, it can genuinely add 2,000 to 4,000mAh, enough to change the maths for multi-day off-grid use.

Solar Power Bank Types Compared

Choosing the Right Capacity

10,000mAh covers 2 to 3 smartphone charges, adequate for a day trip or an overnight stay where you can charge the bank at night. 20,000mAh gives 4 to 5 charges and suits 3 to 5 day trips between mains charges. 26,800mAh delivers 6 to 7 charges, useful for longer trips, tablet users, or anyone sharing with another person. The difference in price between 20,000 and 26,800mAh is typically small, so the larger capacity is usually worth it unless weight is a genuine concern.

USB-C PD vs Standard Charging Speed

Standard USB-A charging operates at 5 to 10W. A modern smartphone with a 4,500mAh battery takes 2.5 to 3 hours to fill from flat. USB-C Power Delivery (PD) at 18 to 22.5W cuts that to 60 to 75 minutes. If your phone supports PD fast charging (most iPhones from iPhone 11 onwards, most Android flagships from 2026), a model with 22.5W USB-C output is worth the small price premium. If you’re charging an older phone via USB-A, the standard speed is fine.

Waterproofing: IP Ratings Explained

IP65 means protection against water jets from any direction, sufficient for light drizzle but not sustained rain. IP66 adds stronger water jet protection. IP67 means the device survives submersion up to 1 metre for 30 minutes. This handles British weather reliably, including being caught in heavy rain or dropped in a shallow puddle. IP68 is rated for deeper submersion. For most UK outdoor use, IP67 is the right minimum. The budget pick (our eighth pick) has no IP rating, keep it dry.

Built-in Cables: Genuinely Useful or Just Marketing?

Built-in cables are genuinely useful in the right context. At a festival, you don’t need to hunt for a cable when someone asks to borrow a charge. On a long walk, you have fewer things to lose. And in a downpour, you’re not fumbling with separate connector pieces. The trade-off is bulk, models with built-in cables are heavier and chunkier than equivalent cable-free models. If you usually travel solo and always carry your own cables, you don’t need them. If you travel in groups or want to minimise what you pack, they’re worth it.

Common Buying Mistakes

1. Expecting the solar panel to be the primary charger. It won’t be. Charge from the mains first, treat solar as a bonus.
2. Overlooking USB-C PD wattage. A USB-C port without Power Delivery is just a 5W charger in a USB-C housing. Check the actual wattage before buying.
3. Buying without an IP rating for UK outdoor use. British weather is unpredictable. A splash on an unrated bank can end a trip.
4. Confusing hand-crank charging with regular charging. One minute of cranking gives roughly five minutes of emergency light, not a phone charge. It’s for last-resort emergency use only.
5. Buying a heavy solar bank for everyday urban commuting. If you’re mostly in cities near plug sockets, a standard lightweight power bank is the better choice.

When a Solar Power Bank Is Not the Right Buy

If your use case is primarily urban, such as commuting, office use, gym trips, a standard lightweight power bank will be cheaper, lighter, and charge faster. Solar banks weigh 300 to 500g more than equivalent non-solar models because of the panel and housing. That weight penalty is worth it when you’re genuinely outdoors for multiple days. It’s not worth it for someone who’ll be within 100 metres of a wall socket most of the time.

Quick Buyer Checklist

• Capacity: 20,000mAh+ for multi-day trips; 26,800mAh+ for tablets or sharing
• Charging speed: USB-C PD 18W+ if your phone supports fast charging
• Waterproofing: IP67 minimum for reliable outdoor UK use
• Solar input: quad-panel if solar top-up genuinely matters; single panel for occasional outdoor bonus
• Built-in cables: consider if travelling in groups or wanting minimal kit
• Review count: 400+ confirms real-world reliability
• Weight: check before buying, as solar banks are heavier than their non-solar equivalents

Case Study: Powering a 14-Day Coast to Coast Walk

Background

A walker from Yorkshire completed the 190-mile Coast to Coast route over 14 days with no support vehicle. She needed to keep a smartphone running OS Maps navigation for 8 to 10 hours daily, a DSLR camera battery, and a GPS tracker charged throughout. She had mains access every 3 to 4 nights at bed and breakfast stops.

Project Overview

After researching options, she chose the Vikeri 26800mAh based on its IP67 waterproofing, large capacity, and the carabiner clip that allowed hands-free solar top-up while walking. She specifically avoided hand-crank models due to the extra weight on a long-distance walk.

Implementation

The power bank was clipped to the outside of her rucksack on clear days, angled towards the sun. On an average July day, it gained approximately 1,200 to 1,500mAh of solar charge while she walked. Between mains charges, this gave her one additional phone charge per full day of sun exposure.

Results

Over the 14 days, the power bank was never depleted below 25%. The solar top-up meant she needed one fewer mains charge than expected, which avoided a diversion on Day 9 when she was behind schedule. Total cost of the power bank: £23.52. She rated the IP67 waterproofing as the feature that gave her most peace of mind during a particularly wet day crossing the North Yorkshire Moors.

Expert Insights From Our Solar Panel Installers About Solar Power Banks

One of our senior solar engineers with over 18 years in the industry sees a lot of confusion around what solar power banks can realistically do: “People come to us expecting the solar panel to do most of the work. In British conditions, with our cloud cover and the angle of the sun, that’s just not realistic for a small panel. What’s realistic is treating the solar as a daily top-up, on a good day in summer you’ll get one extra phone charge, maybe two if you’re walking all day with the bank facing south. That’s genuinely useful on a week’s hiking trip. It’s not useful if you’re expecting to never plug in. The battery capacity is what does the real work, and the IP rating is what makes it worth trusting outdoors.”

Frequently Asked Questions

Summing Up

Solar power banks fill a specific niche: outdoor use where mains power isn’t always available and you want a daily solar top-up to extend the gap between charges. The Vikeri 26800mAh is the right pick for most UK buyers, genuinely waterproof, large capacity, and honest value at £23.52. For built-in cable convenience and wireless charging, the BLAVOR 20000mAh is the established choice with over 1,400 reviews behind it. If solar charging performance genuinely matters to you rather than being a secondary feature, go for the quad-panel model. And for any use case where being caught without power could be a safety issue, the BLAVOR hand-crank adds a last-resort emergency option that nothing else in this list provides.

Updated September 2026