【 Unique Super Capacitor Technology 】 Jstar X1 jump starter doesn’t use lithium battery but super capacitor, so it's a super safe jump pack, no worries about heat and explosion. No need for regular charging when you use it, charge from your weak car battery, instantly start all the 12 volt vehicles like SUVs, RVs, pickups, motorcycles, snowmobiles, and even lawnmowers.
【 Always Ready To Start 】 Jstar X1 portable car jumper starter doesn't need to pre-charge for hours, 3 mins fast charging, plug and play, really saves your time. In addition, this car battery jump starter can be used more than 100,000 times. It’s more convenient and has a longer lifespan than other ordinary jump starters.
【 Working In Freezing Winter 】 Jstar X1 jumper box for car battery can save you from stalling in freezing weather, even in -40℉. This battery jumper’s operation temp is -40℉-158℉, so whether it's a snowstorm or a scorching summer day, you always easily start your dead car with this booster pack jump starter.
【 Extremely Safe Car Starter 】 Jstar X1 jump box is a supercapacitor jump starter, not a built-in battery, and is physically activated to keep users away from the risk of sparks or explosions. What's more, car jumper comes with the most advanced smart clamp with 8 kinds of multi-protection technologies, easy to use and absolutely safe.