4000A peak cranking power enables Gooloo GT4000S to start almost all 12 volts dead battery engines up to 12.0L gasoline or 10.0L diesel in just a few seconds. Compared with a traditional car jumper or jumper cables kit, it's really powerful enough but more compact.

USB Out 1: QC3.0 18W Max(5V/3A, 9v/2A, 12v/1.5A)
Warranty: 18 Months
Waterproof: IP65
Size: ‎9.05 x 3.93 x 2.12 inches
Manufacturer Part Number: GOOLOO GT4000S
Fit Vehicles: Up to 12.0L Gas/10.0L Diesel engines
Batteries: ‎1 Lithium Polymer batteries required. (included)
Operating Temp: -20℃-60℃ / -4℉-140℉
Weight: 4.93 pounds
Brand: GOOLOO
Type: Jump Starter
Voltage: 12V
Features: Portable, Automatic, USB Charger, Water Resistant
Life Time: >1000 cycles
Peak Amps: 4000Amp