Yesper Speed 4120 is the most powerful car jump starter, featuring at4120 A peak current ,24000 mAh (88.8 Wh). Yesper jump starter can work at high temperature up to 131°F and cold up to -4°F. Built-in over-temperature protection allows the unit to turn off the output actively when the battery is at high temperature.

Color: Black
Brand: Yesper
Manufacturer Part Number: 241
Type: Jump Starter
Features: Portable, USB Charger, Water Resistant
Peak Amps: 4120A
Starting Current: 600A
Capacity: 88.8Wh
Voltage: 12V
Fit Vehicles: Up to 12.0L Gas/10.0L Diesel engines
Weight: 775g
Size: 224*89.6*43.8mm
Material: ABS V0
Waterproof: IP65
Operating Temp: -20℃-60℃ / -4℉-140℉
Batteries: ‎1 Lithium Polymer batteries required. (included)
Life Time: >1000 cycles
Set or Single Item: Set
Warranty: 2 Year
Accessories: Charging Cable, Clamps, User Manual
Country/Region of Manufacture: China