Product Price Capacity (mAh) Output Voltage (V) Output Current (A) Input Voltage (V) Charging Time (hours) Number of Ports Size (mm) Weight (g)
FLEXTAIL FLEXTAIL Zero Power 10000
US
£43.45 10000 mAh 5 V 3 A 5 V 3 hrs 8 mins 2 9.9 mm thick 145 g

Ultra-light, ultra-thin 10,000 mAh power bank with dual USB-C fast-charge ports, pass-through charging, and an IPX4 rating; suited for backpackers and anyone who prioritizes low weight and compact size. Best for everyday carry and outdoor use where weight and packability matter.

BigBlue BigBlue SolarPowa 28
US
£52.44 5V Single port: 3A, Total: 4.8A 1 x USB-A, 2 x USB-C Folded: 281 x 160 x 35 mm, Unfolded: 835 x 280 x 5 mm 0.68 kg

The SolarPowa 28 is a 28W foldable monocrystalline solar charger with high-efficiency cells, Smart IC charging, and a rugged fabric backing. It suits hikers and campers who need a lightweight, portable panel to charge multiple USB devices directly from sunlight.

Anker Anker Laptop Power Bank 25000mAh (PD)
US
£89.90 25,000mAh 3-11V / 5V / 9V / 10V / 12V / 15V / 20V 3A / 3A / 3A / 2.25A / 3A / 3A / 5A 3-11V / 5V / 9V / 10V / 12V / 15V / 20V 120 minutes 4 6.18 × 2.12 × 1.93 in 21.0 oz

A 25,000mAh laptop-focused power bank with three 100W-capable USB-C outputs, one USB-A output, dual built-in retractable USB-C cables, and a smart display. Suited for travelers and power users who need to charge laptops and multiple devices at full speed and want a flight-approved, high-output portable charger.

Nestout Nestout 15000mAh Outdoor Battery
US
£48.69 15000mAh USB-C: 5V/9V, USB-A: 5V USB-C: 3A/2.22A, USB-A: 2.4A 5V/9V 3 hours, 35 minutes 3 5.1 x 3.3 x 1.4 in 12.9 oz

Rugged IP67-rated 15,000mAh portable battery with one USB-C and two USB-A ports, 32W combined output, and pass-through charging. Suited for outdoor users who need durable, fast charging for phones, tablets, and accessories.

Nitecore Nitecore NB10000 Gen4
US
£62.93 10000mAh 3.9V (39Wh) 5V / 9V / 12V 3A / 2.22A / 1.87A 5V / 9V / 12V 3h 2m 2 4.57 in x 1.84 in x 0.57 in 143g

Ultralight 10,000mAh power bank with dual USB-C ports, up to 22.5W input/output per port, IPX7 water resistance, and selectable Eco/Standard modes for higher usable capacity or faster charging. Suited for ultralight backpacking and travelers who want a compact, durable fast-charging pack.