A good external battery generally has a capacity that matches your charging needs. For everyday use, a power bank with a capacity between 10,000 mAh and 20,000 mAh is generally considered good. This range offers a balance between portability and enough charging to power multiple devices or provide multiple smartphone charges. Higher capacities may be necessary for extended travel or heavy use, but capacities of 10,000 mAh to 20,000 mAh are suitable for most users.
A 20,000 mAh power bank is generally considered a very good solution, especially if you need a lot of charging capacity.
It provides enough power to charge smartphones multiple times or provide a full charge to tablets and other devices. This capacity is ideal for travelers, frequent users, or those who need to charge multiple devices. It offers a good balance between size, weight and power.
A 20,000 mAh power bank can typically last several full charges of a smartphone with a 3,000-4,000 mAh battery. Depending on the power consumption of the device and the efficiency of the power bank, it can provide between 4 and 6 full charges for smartphones or one to two charges for larger devices like tablets.
The exact duration varies depending on usage and the power bank’s efficiency in transferring power.
Although a higher mAh value generally means greater capacity and longer usage time, that’s not the only factor to consider. A higher mAh can provide more charge and potentially longer use, but other aspects such as charging speed, build quality, and safety features are also important.
The best power bank for you depends on balancing capacity with these other features to meet your specific needs.
A 5000mAh power bank typically lasts one to two full charges of a smartphone with a battery capacity of around 2500-3000mAh. It can also provide partial charging for larger devices like tablets. Actual usage time will depend on the efficiency of the external battery and the power requirements of the devices being charged. For light or occasional use, a 5,000 mAh external battery may be sufficient, but it offers less capacity compared to higher mAh models.