ATTENTION 1. Please read the instruction carefully and strictly follow the instruction before using the jump starter. Any wrong operation may cause damage to the jump starter or cannot get the car started. Don’t jump start any engine that exceed the maximum displacement the unit can bear, or it will cause damages to the unit. 3. Your jump starter will perform best when its battery is fully charged. If less than 50% charged, it may not be able to start your engine. 4. Don’t crank the engine for more than 3 seconds. Allow the jump starter to cool down for at least 30 seconds after each jump-start. A must have for every car! Make sure you and your loved ones can get home when stranded. It will jump start 7.0L gas or 5.5L diesel engine up to 30 times on a single charge. Powerful LED Light & Emergency Light Besides a LED light with 3 modes (high, strobe and SOS), you can use the red emergency light as a hazard warning light to notify a traffic accident or call for emergency services. Convenient Package & Ultra Compact The unit is supplied in a fabulous quality semi-hard case featured also a yellow wrist carry strap. Unlike traditional bulky jump starter packs, it’s small enough to store in your glovebox and light enough to pack in your bag.