Power up your gadgets in the most unexpected places with the extremely compact SolarJuice battery pack, which packs 10,000mAh of power into a pocket-sized package you can take anywhere.

SolarJuice charges up at home like your average battery pack, but also lets you add extra juice on-the-go using its built-in solar panel — so you’ll never be left unplugged from the digital world. And thanks to Cult of Android Deals, you can save 40% for a limited time.

The SolarJuice is capable of charging three devices simultaneously, and because it uses standard USB ports, it’s compatible with all manner of devices, including smartphone, tablets, cameras, games consoles, and more.

It’s rain-resistant so you can take it outdoors, shockproof so you don’t have to worry about dropping it, and environmentally friendly. It’s also incredibly compact and lightweight, so you can slip it into your back or even your pocket and take it with you wherever you go.

SolarJuice packs grade-A lithium polymer cells that provide 10,000mAh of energy, and offers 3 USB ports, with 2A fast-charging for things like tablets and consoles, and 1A charging for smaller gadgets like smartphones.

SolarJuice can be charged more than 1,000 times, and its built-in solar panels allow you to top it up on-the-go when it’s running low. It even has an integrated flashlight that helps you find your way in the dark.

SolarJuice is normally priced at $50, but thanks to Cult of Android Deals, you can get yours for just $29.99 for a limited time.