A power bank seems like a simple purchase—until you're stuck with the wrong one. A charge that's too slow, the wrong ports, or a capacity that's depleted after a single use. The result is frustration, the very thing you wanted to avoid. The market is flooded with technical specs and marketing promises. This guide helps you make the right choice for your devices and lifestyle, based on facts.
To avoid making the wrong choice, it's crucial to understand four core specifications. These determine how well a power bank will perform for your specific needs.
The capacity of a power bank is expressed in milliampere-hours (mAh). This number indicates how much energy the battery can store. A higher value means more charging cycles.
Note: The effective capacity is always slightly lower than the advertised value due to energy loss during the transfer process.
The power output, expressed in Watts (W), determines how quickly a power bank can charge your device. A higher wattage means a shorter charging time, provided your device supports it. Specific protocols have been developed for powerbank snelladen (fast charging).
Check which fast-charging protocols your devices support to take full advantage of the maximum speed. A fast charge powerbank won't deliver extra speed without a compatible device.
The ports on the power bank determine which devices you can connect.
Models with multiple ports offer the flexibility to charge several devices at once.
There is a direct relationship between capacity and size. A high-capacity power bank contains more battery cells, making it larger and heavier. A kleine powerbank (small power bank) is perfect for your pocket, but it won't charge your laptop. Consider where you'll use the power bank most: for daily commutes or as an emergency power source during travels?
Based on the criteria above, we have selected models with clear, functional features.
Why this product This samsung powerbank combines a high capacity of 20,000 mAh with a powerful 45W charging output. With three USB-C ports, this model is designed for users with multiple modern devices. According to Samsung, the 45W Super Fast Charging feature is optimised for their own devices.
Advantages
Who is this for? For the heavy user who needs to charge multiple devices (like a phone, tablet, and earbuds) at the same time. Owners of recent Samsung devices, in particular, can benefit from the optimised charging speed.
Why this product The anker powerbank focuses on maximum convenience. Its most distinctive feature is the built-in, foldable USB-C connector, eliminating the need for a separate cable to charge your phone. It's a compact and lightweight solution for on-the-go use.
Advantages
Who is this for? Ideal for the everyday user looking for a kleine powerbank (small power bank) to top up their powerbank voor telefoon (phone power bank) quickly and without hassle. Perfect for the train, a festival, or a day out.
Why this product This model is a powerhouse, designed for the most demanding devices. With a maximum output of 140W via the PD3.1 standard, this is a full-fledged powerbank laptop solution, suitable for a MacBook Pro, for example. The high capacity of 24,000 mAh ensures you won't run out of power quickly.
Advantages
Who is this for? For the professional, the digital nomad, or the 'power user' who needs to power a high-performance laptop, tablet, and phone on the go. This is the solution when standard power banks don't provide enough power.
The right power bank depends entirely on your devices and lifestyle. Are you looking for a different capacity, a specific charging protocol, or a different size? There is a wide range of charging solutions available that may better suit your needs.
Explore our full range of Type C chargers for more choices.
This depends on the capacity of the power bank (mAh) and the capacity of your phone's battery. A rule of thumb: divide the power bank's capacity by your phone's battery capacity and multiply the result by about 0.7 to 0.8 (to account for energy loss). For example, a 10,000 mAh power bank will charge a phone with a 4,000 mAh battery about 1.75 to 2 times.
Both are fast-charging technologies, but they were developed by different companies. Power Delivery (PD) is a universal standard that works via USB-C and is supported by a wide range of brands, including Apple and Google. Quick Charge (QC) is from Qualcomm and is found mainly on Android devices with a Snapdragon processor. Many modern power banks support both protocols.
Yes, power banks are allowed on airplanes, but only in your carry-on luggage. There is a limit on capacity. Most airlines enforce a limit of 100 Wh (Watt-hours). A 20,000 mAh power bank (at 5V) is equivalent to 100 Wh, and a 24,000 mAh model is just above that but is often still tolerated. Always check the specific rules of your airline before you fly.
Written by: Joybuy Product Recommendation Officer