This compact power bank will save your phone's lifespan — and it's currently 36% off in this post-Prime Day deal

If you're constantly on the go, then chances are you need to invest in one of the best power banks money can buy. But this great deal proves that you don't need to pay top dollar to ensure your phone is constantly at 100% when you're far from a power outlet.

Hailing from a lesser-known brand, the INIU B6 power bank is now discounted by 36% on Amazon, down to just AU$29.99. Owning a portable charger is near critical nowadays, especially if you're commuting to and from work, school or university, or jetsetting abroad.

Having a trusty portable charger will always come in handy, and this one even has some nice features that jazz it up. With a USB-C port, two USB-A ports and a large, easy-to-read display, the INIU B6 is small enough to fit inside your pocket or bag, is totally flight-safe and is extremely light, weighing just 210g.

You'll need to act fast to pick this one up, though, as there's no guarantee stock will last at this price.

Save AU$17

INIU B6 22.5W power bank: was AU$46.99 now AU$29.99 at Amazon

If you're constantly on the go, be it commuting or travelling, there's no better accessory to have than a portable power bank for your devices. Our colleagues over at TechRadar give this INIU top marks in their best power banks guide, as it can fast charge your phone with its 10,000mAh battery and still have extra juice left over.

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TechRadar also gave this little pocket rocket a massive 5 stars in their review, as the B6 combined affordability and fast charging in one simple package. Their reviewer said that the B6 "has excellent voltage accuracy and can output 85% of its rated capacity at 20W," and comes with an added bonus of a built-in torch — though, they didn't find it to be very bright.

And thanks to its 10,000mAh of power and 3A fast charging, this power bank can provide lots of juice when you're in a hurry. According to the maker, the B6 can fuel most smartphones at least twice without needing to recharge, which is great if you or your mates need an extra battery boost on your travels.

The INIU B6 also acts as a phone stand, with a pull-out holder tucked away into the slim design. The B6 also comes with a great 3-year warranty, but if you're keen on draining its battery every day, or want to charge your laptop as well, you may want to consider the INIU B5, which holds more capacity for fast charging larger devices.