How we test power banks

Here's how we find a good power bank that will keep your smart device up and running when you need it most.

Power up

Our power bank reviews help you find the best model to keep your smart device going when you're out and about. We assess their size, ease of use and effectiveness, so you can be confident you're making the right decision when its time to buy. Here's how we do it.

Our expert testers

Our expert tester Elias Plastiras tests a wide range of products – including TVs, digital radios and laptops. He also loves products with a purpose and is just as frustrated as most of us when he encounters poor design or features, or performance that doesn't meet the claims.

How we choose what we test

We look for readily available power banks with a focus on devices that can power a large smartphone multiple times. We selected 18 models that were priced under $100 and between a power rating of 10,000mAh and 20,000mAh.


Our overall score comprises:

  • Performance score (50%)
  • Ease of use (20%)
  • Display score (20%)
  • Pocketability score (10%)

How we test

We rate the following aspects of each power bank:

  • Performance – this is based on a charging score that combines the results for how many times our test phone could be charged and the discrepancy between the stated output of the battery and the actual charges achieved. We also measure how long it takes the power bank (on average) to charge our phone.
  • Ease of use – based on the following criteria: Did the power bank immediately charge our phone when it was plugged in to the fastest charging port? How long is the supplied cable? How visible is the port labelling? How useful are the supplied instructions?
  • Display score – takes into account the position of the display on the unit and how easy it is to see and understand at a glance.
  • Pocketability – takes into account the size and weight of the unit and whether or not the unit can fit inside a pocket and be easily carried around.

Ready to buy?

Take a look at our latest power bank reviews and test results.

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