Compatibility -- Upgrade 12V & 24V all-in-one smart jump starter delivers unbeatable 2800 Amp (12V system), 1400 Amp (24V),Professional grade jump starter that works with gas and diesel engines and heavy-duty trucks,makes it an portable tool for any garage,bus,construction sites or farm. (Please insert terminal plug into 12V or 24V terminal socket based on vehicle's battery type) Battery Jump Starter -- Equipped ​with Industrial Grade Hot Jaw Clamps,32" #6 Gauge Cables,Reverse polarity indication & alarm. Multi-Function Jumper Box -- Dual quick-charge USB port and DC 12V outlet for automotive equipment like air compressor, Car refrigerator etc. Jump Starter Battery Pack -- Equipped with two 20AH maintenance-free sealed lead-acid batteries, very safe and reliable. Color LED indicators for checking battery status & LED work light for emergency use. (Can withstand challenging temperatures (-4℉~149℉), no fear of freezing winter or scorching summer.) Service -​- We will give you 12-month after-sales customer service, including product use instructions, product protection, repair, replacement, etc 2800/1400 Peak Amp 12V/24V Jump Starter