Not all power banks are created equal. The size of your power bank can determine which devices and appliances you can power. Higher capacity power banks can keep your devices charged longer, but more power also means a bigger size. Use this guide to determine which capacity is the best fit for your needs.
What Does Capacity Mean for a Power Bank?
Measured in milliampere hours, a power bank’s capacity determines how much power it can store to charge your devices. The more capacity your power bank has, the longer it will be able to charge your devices.
Things to Consider When Choosing the Right Power Bank Size
Weight and Size
Power banks are meant to help you keep your devices charged while on the move. The bigger the power bank’s capacity, the more it ways. Keep in mind what you plan to use your power bank for. Will you keep it with you for daily use? Will it provide portable power during your travels? You will want to consider how the size and weight of your power bank will fit your needs before choosing the one that is right for you.
The Size of Your Devices
What type of devices are you planning to charge with your portable power bank? If you only have a phone and a few small devices, you will not need as much capacity. However, if you have larger devices like laptops, camping supplies, or small appliances, you may need a larger capacity.
Time In Between Recharges
Will you be able to recharge your power bank frequently or will you rely on it to charge your devices multiple times over a few days? The bigger the capacity, the more charges your power bank will be able to supply to your devices in between charges.
Number of Devices
Do you have multiple devices that need charging on the go? The size of your power bank can determine how many devices you can charge. The bigger your capacity the more devices you can charge before having to recharge your power bank.
10000mAh vs 30000mAh: Which is Right for You

10000mAh Power Bank
Pros:
Portable – When compared to larger models, 10000mAh power banks are usually lighter and sleeker. The small shape and weight make these power banks ideal for carrying in a backpack, school bag, or purse.
Great for Daily Use – 10000mAh power banks are the ideal size for daily use. The capacity is large enough to be able to charge your phone or earbuds two to three times. If you are able to recharge your power bank at home each night, it will have plenty of power to keep your devices charged all day long.
Cons:
Requires Frequent Recharge – One of the major downsides of a 10000mAh portable power bank is that it will most likely need to be charged each night. While this may be no big deal for most people, if you are traveling and do not have consistent access to a wall outlet, your power bank becomes just another thing to carry.
Not Great for Multiple Devices – 10000mAh is plenty of capacity to charge a phone or small device a few times, but it is nowhere large enough to accommodate multiple devices comfortably. While you may be able to get a partial charge on multiple devices, it will not be able to charge all of your devices completely.
Common Uses
The most common use of a 10000 mAh power bank is as a daily backup battery for your cell phone. A 10000 mAh power bank can charge most phones two to three times before needing a recharge.
Best For:
A 10000 mAh power bank is best for daily use. You can use this super portable charger to keep your phone, earbuds, and smart watches charged for the entire day even after hours of use.
30000mAh Power Bank

Pros:
More Capacity- The most obvious benefit to a 30000mAh power bank is the larger capacity. With a larger capacity, your power bank will be able to charge more devices more times. The higher capacity will allow you to get many charges on your device making it a more reliable option. A 30000mAh offers the best power bank capacity for those looking to use their power bank for multiple days.
Can Handle Multiple Devices - Unlike the smaller option, the 30000mAh power bank can handle charging multiple devices multiple times. This means that you won't have to choose which device you keep charged. Many power banks of this size feature a high-capacity portable charger that can charge more than one device at a single time.
Cons:
Heavy- When compared to a smaller capacity power bank, a 30000mAh power bank will weigh slightly more and have a bigger silhouette. This is to accommodate the larger battery.
Price- a larger battery of course results in a larger price tag. While the cost of a 30000mAh power bank is not unreasonable it is considerably higher than smaller options.
Common Uses
The most common 30000mAh power bank uses are for charging multiple devices on extended trips. The larger capacity can accommodate bigger devices and is a great resource to have when camping or traveling for multiple days.
Best For
30000mAh power banks are best for those who need to charge a variety of devices. The capacity allows you to use the power bank repetitively without having to charge it each night. This makes it ideal as a power backup in emergencies and for extended travel.
Find the Right Power Station with Pisen
Whether you are looking for the portability of a 10000mAh power station or the charging power of a 30000mAh power station, Pisen has you covered. Our 10000mAh collection features a wide range of power stations that are perfect for on-the-go charging. The Pisen 30000mAh Digital Display Power Bank provides more power when you need it most. Find the right power bank for your needs with Pisen.
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