1000mAh to 120000mAh: What's the Best Capacity for A Power Bank?
Apr 16, 2021 By Claire
Power & Sync

1000mAh to 120000mAh: What's the Best Capacity for A Power Bank?

Yes, there are fixes to stop your phone, tablet, or laptop battery from draining fast. But not everyone wants to compromise. That's why portable power banks or battery packs exist.

For those who are new to power banks or have difficulty deciding which kind to get, capacity is the first and foremost thing to consider because it determines how often you can charge your device.

Ever wondered what the best capacity for a power bank is?

What Do You Need to Know About Power Bank Capacity?

I once explained about the numbers printed on power banks. Capacity is one of those complicated technical terms. But the rule is simple: the actual capacity of a power bank is about 2/3 of the rated capacity. Part of the energy will be lost in the conversion and during charging.

Capacity typically measures in mAh (Milliamp Hours), like our smartphone batteries. The bigger the number is, the larger the capacity. A power bank with a 10000 mAh battery has a capacity of about 6000-7000 mAh. The iPhone 12 mini has a 2227 mAh battery. So one full charge of a 10000 mAh power bank can charge the iPhone 12 mini from 0 to 100% two or three times (7000 divided by 2227).

If a 10000 mAh power bank can barely charge your iPhone 12 mini twice, then probably it's so poorly made that too much energy loss happens during charging, it has a low conversion efficiency or simply contains far less capacity than claimed.

Power Banks with Low Capacity

1000 mAh Power Bank

Power banks with a capacity less than that of the regular smartphone are rarely seen nowadays. To many, they seem pointless, but those who are not addicted to handheld entertainment may love the idea of a backup battery pack that they can attach to their key chains or keep in their wallet.

4000~5000 mAh Power Bank

pitaka magsafe power bank, wireless charging battery pack

 PITAKA MagEZ Battery Pack, 4000mAh

A power bank of about 4000 mAh should suffice in ensuring your phone lasts well over a day even if you're a heavy phone user, given that most people don't leave the house with a dead phone. Phone users welcome these kinds of power banks with good reason: sufficient capacity with portability. If you are looking for a portable power bank for your phone, you may want to look at those 4000-5000 mAh power banks that can fully, or almost fully, charge your device. They're also very portable and convenient to carry.

Power Banks with Medium Capacity

7000 mAh Power Bank

If you're going to places where you regularly rely on your phone, and it may be a while before you come across a wall charger, then a medium-capacity power bank is the best option. A power bank with a capacity of around 7,000 mAh can not only charge your phone once, but you can share it with other people or charge other small devices like earbuds.

10000 mAh Power Bank

The average battery capacity of a standard smartphone falls below 4,000 mAh. So, a power bank with a 10,000 mAh capacity (actual capacity 6,000-7,000 mAh) is enough to fully charge most handsets at least once and charge small phones like the iPhone 12 mini three times. The downside is that power banks of this size tend to be larger and heavier than your cell phone.

20000 mAh Power Bank

A 20000mAh power bank can charge your tablet

A power bank with a capacity of 12000 mAh is more than enough for a smartphone. You can even charge a tablet like the iPad mini (5124 mAh) or Samsung Galaxy Tab S7 (8000 mAh).

If you have the iPad Pro 2020 with a battery of nearly 10000 mAh, or a standard laptop, then a 20000 mAh power bank seems to be the best option. After charging your iPad Pro once, the power bank still has energy left for a smartphone.

Power Banks with High Capacity

20000+ mAh Power Banks

Power banks with a capacity of over 20000 mAh are comparably expensive and sizeable. So, be careful if you see some power banks with an extremely high capacity and an unreasonable price tag. They can support all your portable devices for a day and tend to be used for camping or traveling.

120000 mAh Power Banks

A 120000mAh power bank

These kinds of power banks are more like portable generators, capable of lasting for days. They are usually found in a car's trunk and can charge appliances, such as a mini-fridge. They typically feature multiple charging ports to charge several devices simultaneously.

What is the Best Capacity for a Power Bank?

As you already know, the more capacity a power bank holds, the more it can provide. On the flip side, the more powerful a power bank is, the bulkier it is. They also require a longer charging time and may not be allowed on flights.

You can't have it both ways.

So, the best capacity for a power bank depends on your needs.

For regular phone use or a daily commute, take a look at power banks between 4000-5000 mAh, which are portable and have adequate juice.

For phone users with unique needs or for particular scenarios, 7000-10000 mAh are good options. If you want a power bank mainly for your tablet or laptop, they'd better be above 10000 mAh.

 

 

Sep 15, 2023 By Lily

PITAKA Apple Watch Band Series: The Best Stylish Apple Watch Bands for Men and Women

In recent years, Apple Watch bands have evolved from functional accessories to fashion statements. We no longer settle for the default bands that c...

Read More
Sep 21, 2023 By Lily

iPhone 15 USB-C Port: Find the Best Chargers and Cables That Fast Charge Your iPhone 15

The long-anticipated iPhone 15 has finally arrived. One of the most significant upgrades should be the introduction of the USB-C port. This great c...

Read More
Sep 26, 2023 By Claire

PITAKA Has the Best Aramid Fiber iPhone Cases

To continue its goal of becoming completely carbon neutral by 2030, Apple announced at the Apple Event that it will phase out leather iPhone cases ...

Read More
Sep 27, 2023 By Lily

Best iPhone 15 Cases: Thin, Protective, and Stylish

You've just snagged the latest iPhone 15, and it's a sheer masterpiece. But you just can't leave your precious investment vulnerable to scratches, ...

Read More
Oct 16, 2023 By Lily

How to Remove and Change Apple Watch Bands

The Apple Watch has become more than just a functional device; it has evolved into a fashion statement that enhances personal style and expression....

Read More