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There's little that derails a productive day or a relaxing trip quite like a battery icon turning red. Whether you're navigating with your phone, finishing a report on your laptop or simply listening to music on your commute, running out of power is a modern frustration we can all do without. A reliable power bank is no longer a gadget for tech enthusiasts; it's an everyday essential.
But with so many options on the market, choosing the right one can feel overwhelming. How much capacity do you need? What does "fast charging" really mean for your devices? As the Joybuy Product Recommendation Officer, my role is to help you cut through the clutter. This guide offers practical advice and highlights a few standout options to help you find the perfect portable charger for your needs.
Before you buy, consider these key factors to ensure you get a device that truly fits your lifestyle.
The capacity of a power bank, measured in milliampere-hours (mAh), tells you how much energy it can store. A higher number means more charging potential. For example, a 10000mAh power bank can typically charge a modern smartphone two to three times. This capacity offers a great balance between power and portability, making it ideal for daily use.
However, if you need to charge larger devices like a tablet or a laptop, you'll need a much higher capacity, often 20,000mAh or more. The trade-off is that these units are larger and heavier. If your priority is something you can slip into a pocket or a small handbag, a slim power bank or a compact travel power bank with a lower capacity might be a more practical choice.
A high-capacity power bank is of little use if it takes all day to charge your devices. This is where charging speed, measured in watts (W), comes in. To get the most out of a fast charging power bank, you need to look for compatibility with modern standards like USB Power Delivery (PD).
A USB C power bank with PD can intelligently deliver the optimal amount of power to your device, significantly reducing charging times for compatible phones, tablets and even laptops. For those with high-demand electronics, a portable laptop charger with a high wattage output (65W or more) is essential. Always check that both your device and the power bank support the same fast-charging protocol to benefit from the increased speed.
Consider how many devices you need to charge at once. Many power banks come with multiple outputs, often a mix of traditional USB-A and modern USB-C ports. A dual-port model is a versatile choice, allowing you to charge your phone and earbuds simultaneously. Ensure the power bank for your phone and other gadgets has the correct port types to match your existing cables or be prepared to purchase new ones.
We've selected a few models that cater to different needs, from high-performance power users to style-conscious daily commuters.
Why It Stands Out: This is a powerhouse designed for those who need serious performance. With a massive 25,000mAh capacity and a staggering 140W output via its PD3.1 USB-C port, it can charge demanding laptops like a MacBook Pro at high speed. The built-in colour display provides real-time information on power output, input and remaining battery, taking the guesswork out of charging.
Pros:
Who is it for?: Tech professionals, digital nomads and anyone who relies on a laptop or other high-power devices while on the move. It is an outstanding choice for a portable laptop charger.
Why It Stands Out: The Lofree power bank proves that practical tech can also be elegant. Designed with a refined, minimalist aesthetic, it features a soft, warm-tone ambient LED light. Its compact size and 10,000mAh capacity make it a perfect companion for daily use, slipping easily into a handbag or tote. It delivers a respectable 22.5W fast charge, ideal for modern smartphones.
Pros:
Who is it for?: Style-conscious users who want a power bank for their phone that is both functional and fashionable. It’s an excellent accessory for daily commuting, social outings and travel.
Why It Stands Out: Coming from a brand synonymous with battery life, the Duracell Charge Plus offers straightforward reliability in an exceptionally portable package. This slim power bank is one of the most compact 10000mAh options available, making it easy to carry in a pocket. With both USB-C and USB-A ports, it offers flexible, simultaneous charging for two devices.
Pros:
Who is it for?: Anyone seeking a no-fuss, highly reliable and pocket-friendly travel power bank for everyday use. It’s a great all-rounder for students, commuters and holidaymakers.
Our recommendations cover a variety of common needs, but the world of portable power is vast. If you're looking for different capacities, features or form factors, there are many other excellent products to consider.
Explore our full collection to find the device that's the perfect fit for you.
Discover more options for fast charging for phones on Joybuy
Generally, a 10000mAh power bank can charge a typical smartphone 2 to 3 times. The exact number depends on your phone's battery size and the power bank's energy conversion efficiency, which is usually around 60-70%.
Yes, but they must be packed in your carry-on luggage, not in checked bags. UK and international aviation rules typically restrict power banks to 100 Watt-hours (Wh) without special airline approval. A 25,000mAh power bank is usually under this limit, but it is always wise to check the specific regulations of your airline before you fly.