Product Price Charging Capacity (mAh) Solar Panel Efficiency (%) Number of Solar Panels Charging Speed (Watts) Weight (grams) Waterproof Rating Built-in Battery
BioLite SolarPanel 5+
US
£74.57 3200 mAh 1 5 watts at peak sun 390 g IPX4

The BioLite SolarPanel 5+ is an ultra-light 5-watt monocrystalline solar panel with an integrated 3,200 mAh battery, a sundial for optimal alignment, a 360° kickstand and IPX4 weather resistance. It's designed for lightweight camping and day-use charging of phones and small devices, storing energy for use after sunset. The panel is compact and folds for easy transport.

★ Ideal for

Suitable for value-focused buyers under £150 because it provides a 5W panel, 3,200 mAh onboard battery, IPX4 weather resistance and a 390 g weight for £99.95, delivering portable charging at a low price.

Blavor 10W Solar Charger
US
£22.38 2 Produces 1,401 mAh in 1 hour direct sun 12.6 oz

The Blavor 10W is a compact, foldable monocrystalline 10 W solar panel with two USB output ports and a small exterior pocket for a battery bank. It is very lightweight and portable, suitable for backpacking and topping up power banks in direct sunlight.

★ Ideal for

Ideal for value-focused buyers under £150 because it delivers 10 W output, dual USB ports, very light weight (12.6 oz), and produced 1,401 mAh in one hour of direct sun during testing.

FlexSolar 40W Folding Solar Panel
US
£59.68 6 varies, USB-A up to 18W, USB-C up to 18W (per FlexSolar site) 2.95 lbs IP67

The FlexSolar 40W is a foldable monocrystalline solar charger with six panels, USB-A and USB-C outputs, and a lightweight packable design for camping and travel. It offers DC output plus USB charging and is designed for charging phones, power banks and small devices in direct sunlight.

★ Ideal for

Good value under £150 because its 40W peak power, six-panel design, USB-C output and IP67 durability give high real-world charging performance for the price.