It wasn't long ago that so called "portable" jump starters were about as portable as 4 bricks with a handle on top. Things have changed a lot since then thanks to lithium battery technology. Indeed, this unit weighs in at around half a kilogram and could almost fit inside a shirt pocket! Not only is it light and portable with a whopping 850A cranking current, it also features a wireless QI charger for your phone and two USB sockets for your other devices. You won't be caught in the dark either thanks to the built in torch with SOS beacon function. Charging is via the onboard USB C socket