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 1000A 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. Features LiCoO2 Battery Reverse Polarity Protection Short Circuit Protection Low Voltage Protection Overheat Protection Specifications DC current rating : 1000A DC Voltage : 12V Operating Temperature : 0°C, 80°C LED Light Battery status indicator Length : 190mm Width : 80mm Depth : 40mm Weight : 600g Shape : Lithium Rechargeable Battery Cell/Pack Type : Lithium Ion Voltage : 3.7V Capacity : 16000mAh Mains rechargeable Mains charging charge time : 3hr, 5hr 12V rechargeable Has USB power output DG UN Number : 3481 DG Ship Name : 3481 - Lithium Ion Batteries Packed With Equipment DG Class : 9 DG Pack Group : III - Minor Danger DG Hazardous Chemical Code : 4W Battery Watt Hour Rating (Required for Lithium Batteries) : 59.2Wh Dangerous in Air Freight Packaged Volume : 4.97l Packaged Weight : 1.54kg Packaged Length : 25.8cm Packaged Width : 15.8cm Packaged Height : 12.2cm