Have you ever encountered these situations while traveling? Your phone is almost dead before you even get home. When you need to use your phone, it's already low on battery. When you need to contact someone, your phone has shut down due to lack of power. These situations are truly frustrating, but it is precisely because of these situations that power banks have emerged.
What is a power bank? Those unfamiliar with power banks will likely search for this question initially. Today, we will use this article to introduce power banks from three aspects: meaning, types, and how to choose the right one.
What is a power bank
Meaning of power bank?
A power bank is like a portable battery, used to power our mobile devices, such as phones, Bluetooth devices, and watches. In this high-tech era, power banks not only charge our devices but also provide a safety net while traveling, allowing you to confidently go wherever you want.
Common use cases of power banks
For example, when we're traveling for business or leisure, carrying a charger isn't convenient, so a power bank comes in handy, always ready to serve as your backup battery. Or, when commuting and unable to find a power outlet, a power bank can also play a crucial role, ensuring your phone stays connected. In short, a power bank is our first choice for power when we're out and about, and it's also a guarantee of our phone's battery safety.
What types of power banks are there?
There are many types of power banks, and different classification standards will yield different results. We mainly distinguish them based on the three most common classifications.
Classified by power bank capacity
As a backup power source, the capacity of a power bank is naturally its most important factor, so classifying it by capacity is the most common approach. Based on capacity, there are three main categories:
- Small capacity (≤5000mAh): Small capacity power banks are small in size and light in weight, mainly suitable for daily travel and commuting emergencies. They are highly portable and can be easily grabbed and taken out. However, due to the low capacity, the battery life is relatively limited, approximately 0.5 to 1 charge for a mobile phone.
- Medium capacity (5000-20000mAh): Medium capacity power banks are the most common type on the market. They are slightly larger and heavier than small capacity power banks, and naturally, their capacity is also correspondingly larger. They are suitable for carrying when traveling or on business trips, combining practicality and portability, and can charge a mobile phone approximately 2-3 times.
- Large capacity (≥20000mAh): Large capacity power banks have the strongest battery life. Correspondingly, the size and weight of large capacity power banks will also increase significantly. They are more suitable for long-distance routes or outdoor activities such as camping. They can charge a mobile phone approximately 3-5 times. However, large capacity power banks also need to be aware of the restrictions on carrying them on airplanes. Power banks exceeding a certain capacity are not allowed to be carried on airplanes.
Classified according to power bank wattage and charging protocol
Based on power and charging protocol, they can be divided into two categories:
- Standard power banks: Standard power banks have an output power of 5W-10W and only support the most basic charging functions, resulting in a relatively slow charging speed. However, due to their longer development history, the technology of this type of power bank is relatively mature.
- Fast charging power banks: Fast charging power banks come in two power levels: medium-power fast charging and high-power fast charging. Medium-power fast charging is 18W-22.5W, while high-power fast charging is 30W-65W and above. This type of fast charging power bank is gradually becoming the mainstream type on the market, greatly reducing charging time and being compatible with more devices and charging protocols. Of course, fast charging power banks also have higher requirements for safety and heat dissipation.
Classified according to the power bank's interface
Different charging interfaces also allow for different classifications of power banks. The most common charging interfaces are USB-A, USB-C, and Lightning. Nowadays, it's rare to find power banks with only one of these three interfaces; most often, they are used in combination. Some power banks even come with a built-in charging cable, meeting the needs of multiple users and devices simultaneously. Of course, some power banks now eliminate the need for cables, charging devices directly via Qi or MagSafe, making them even more portable. For example, the newly launched aulumu M10 power bank has two wireless charging panels, one on the front and one on the back, with a maximum output power of 15W.
How to choose the right power bank
When considering choosing a power bank, we can return to the initial question: what is a power bank? By definition, a power bank is a portable power source we use when we're out and about without a power outlet. Therefore, we can consider the following aspects when making our selection:
Use cases and capacity
The intended use case is the prerequisite for choosing the capacity of a power bank. Different use cases will determine the frequency of use and the demand for a power bank. If it's for daily commuting and travel, then choosing a small-capacity power bank will meet your needs; if it's for business trips or short trips, then a medium-capacity power bank that balances capacity and size will allow you to perfectly handle all scenarios; if you need to travel long distances or go camping, then a large-capacity power bank will give you a lot of peace of mind.
Charging speed
Besides capacity, charging speed is another important factor in choosing a power bank for daily use. Different charging speeds affect charging time. Ordinary 5W-10W power banks take longer to charge, and while their output power is lower, it's stable and doesn't overheat. Fast charging power banks can reach 10W or higher, such as 15W, 18W, or even faster 30W, 65W, and above. Fast charging significantly reduces charging time, but excessively rapid charging can also cause the power bank's temperature to rise continuously. Therefore, a proper cooling system is crucial for fast charging power banks.
Portability and Detail
Portability is an essential feature for any power bank. For power banks, portability is reflected in the ability to use different charging interfaces, but it also extends to the power bank's structure and performance. For example, there are wired and wireless power banks. Wired power banks eliminate the need to carry a separate data cable, while wireless power banks require a separate cable.
Some power banks also support wireless charging, further eliminating the need for a data cable, although compatibility with your phone must be considered. In addition to portability, the overall quality of the power bank's design is also important, such as whether it includes a power level display, which provides immediate information about the power bank's current battery level.
Security
The most important thing when buying a power bank is its safety. Different countries have different certification standards. Some standards are not mandatory, but they are still industry norms. Therefore, before buying a power bank, you should confirm whether it meets the safety certification standards of the country of origin.
Aulumu M10：Portable Power for Everyday Use
Considering the above factors, a suitable power bank for most users should have a capacity of 10000-20000mAh, support fast charging, and be equipped with a USB-C port. If you haven't decided on a power bank yet, you might want to check out aulumu's latest power bank, the M10.
The M10 has a total capacity of 10000mAh, uses a USB-C port, and has a maximum output power of 35W. It weighs only 248g, about the weight of a 250ml can of cola. In addition to the included USB-C cable, the M10 also comes with two wireless charging slots; the front wireless charging slot is specifically designed for watches.
Beyond its high performance, the M10 is also impeccable in its details. Both the front and back panels have ventilation holes, ensuring safe charging and overall safety. The M10 also features two rows of power indicator lights, allowing you to immediately know the power bank's battery status. If you're still hesitating about which power bank to buy, you should definitely try the aulumu M10; it will surely give you a different experience.
Conclusion
This article should have answered your question about what is a power bank. With the increasing frequency of use of mobile devices like smartphones, power banks will gradually become an essential part of daily life. If you're still undecided about which power bank to buy, the aulumu M10 power bank will be a power bank that meets all your needs.
