The charging time of a power bank depends on several factors: the power bank’s capacity, the charging technology, and the power adapter. We’ll address each of them in the course of this article.
But as a rule of thumb, it generally takes between 3 and 8 hours to charge an average power bank.
Here are some examples of power banks and their recharging times:
|Power Bank||Capacity||Charging Time|
|Elecjet Apollo Traveller||5000mAh||18 minutes|
|iHome Power Bank||10000mAh||2 hours|
|NusGear Power Bank||20000mAh||2 hours|
|RAVPower 60W Power Bank||20000mAh||3 hours|
|MAXOAK AC Power Bank||26756mAh||4 hours|
|Renogy Laptop Power Bank||72000mAh||8 hours|
1. The power bank capacity
The capacity is one of the key factors that influence a power bank’s charging time. All things being equal, the more capacity a power bank has, the more time it needs to get recharged.
This is why a 10000mAh power bank can generally be charged in 3 to 4 hours, while a 30000mAh power bank can take as much as 6 to 8 hours to charge.
2. The charging technology
Charging technology is another important key factor that can have a significant impact on a power bank’s recharging time. There are different charging technologies that can help power banks charge faster.
For example Power Delivery (PD) is one of the most popular ones. This is a charging standard that is associated with USB type C ports and which allows for power output levels as high as 100W. Check out our curated list of some of the best PD power banks.
However, a new technology is emerging and it’s promising to bring unprecedented charging times. This new technology is graphene. This is a material created of sheets that are just one Carbon atom thick and which has super-conductor properties. Although not yet fully mainstream, there are already some power banks that take advantage of it. You can see some of them here.
3. The power adaptor
The power adaptor/wall charger/charging brick or however you want to call it is yet another important piece in a power bank’s fast charging time. It doesn’t matter if you have a state-of-the-art portable charger that is capable of charging in under one 1h if you use a power adaptor that supplies just 5V/1A of power.
Some of the fastest charging power banks come with their own power adaptor, as the Apollo Traveller portable charger for example. Although the cost of the adaptor is reflected in the price, you can be sure that you have the best choice for a fast charging time of your power bank.
However, most power banks don’t come with an adaptor. In this case, you need to choose one which delivers enough power to quickly charge your device. As in the case of power banks, adaptors are also influenced by different charging technologies. For example, some of the fastest charging power adaptors come with Qualcomm Quick Charge protocols or are built using GaN technology.
How to find fast-charging power banks
If you’re looking for a power bank that is capable of charging really fast, then check out our curated list of the fastest charging power banks.
Alternatively, you can visit our power bank review page and use our custom-made filter to select the desired charging time as pictured below:
If you have any further questions on how long it takes to charge power banks, please let us know in the comments or get in touch via our contact page. Thank you!