As handheld technology advances, the demands on their batteries increase exponentially. And while battery technology is just about keeping up a pace, we're often finding day-long battery life is still out of reach.
And that's why we need power banks. These portable chargers can, literally, be life-savers. They can be packed away in a bag and then turned on at a moment's notice, ready to deliver charge to a phone, tablet, laptop or smartwatch and help you see the day out.
I recently tested an Excitrus portable charger that could deliver 100w of charging output and it was quite a remarkable device.
But there's now a smaller version, which can still hurl out 30W - and that's enough for most smartphones, even the flagships.
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