Buying guide
Power banks: choose capacity, charging speed and size
Choose a power bank by usable capacity, USB-C charging standards, port mix, weight and travel restrictions rather than one large number.
Start with the shape of the decision
The capacity on the label is not the energy that reaches a phone after conversion losses. Start with how many recharges or hours you need, then check the charging protocol your devices support.
Free checks first
- Check whether battery drain is caused by an ageing battery, poor signal or a background app.
- Confirm the phone’s wired charging standard and maximum useful input.
- List every device and cable you would need to carry.
Compare the options
Compact bank
Usually suitsA partial or single phone top-up with minimal weight.
Watch forLess reserve for long days or several devices.
Mid-capacity USB-C bank
Usually suitsTravel days and repeated phone charging.
Watch forMore weight and longer recharge time.
High-output bank
Usually suitsTablets, laptops or several devices with compatible USB-C PD.
Watch forLarger, heavier and subject to airline capacity rules.
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Use the specification and trade-offs above for now. Circle Utility will show product rows only after the programme, source, image rights, price, availability and destination all pass the catalogue checks.
Keep narrowing the choice
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