12V/24V JUMP STARTER: Do not worry about dead batteries in cars, acetek powerful jump starter will help you start vehicles within a few seconds. 12V or 24V can be chosen, It can jump start almost every type of vehicles and equipment, including semi-trucks, motor homes, coaches, buses, pickup, SUVs, vans, motorcycles, ATVs, UTVs and so on. Please insert terminal plug into 12V or 24V terminal socket based on vehicle's battery type SAFE JUMP PACK: Our car battery jump starter system has 9 safety functions to ensure the safety of the user in all modes of operation and to protect the unit from damage that short-circuit protection, over-temperature protection, reverse connection protection, over-current protection, over charge protection, over discharge protection, over-voltage protection, low-voltage protection, magnetic field protection making it super safe for anyone to use JUMP START BATTERY PACK: Equipped with dual 20Ah batteries, jump starter with 2 USB port (5V2.1A) can recharge your cellphones, tablets, and other mobile devices, 12V 10A DC Port can power any 12V DC devices, like tire inflator, vacuum cleaner, and more LED LIGHT & TWO CHARGING METHODS: Built-in bright LED light help you start your vehicles and do other things more conveniently in the dark. Please insert the terminal plug into 12V terminal socket before recharge, we can charge it with AC charging cable indoor or charge it with DC charging cable outdoor. All battery level indicator LED light be on when the jump starter is fully charged EXTREME TEMPERATURE ADAPTABILITY: Thanks to the super stable lead-acid battery, this battery jump pack can withstand challenging temperatures (-4℉~140℉), no fear of freezing winter or scorching summer. Just contact us if you have any problems with your 12V/24V battery jump starter This battery power pack can safely start the car dead batteries within a few seconds