◆ 100  SECONDS  QUICK  CHARGE
◆ 300AMP  CRANKING  CURRENT
ULTRA  CAPACITOR  TECHNOLOGY
300AMP  FROM  -40°C to  65°C
● Maintenance free, no need for recharge during storage.
● Instantly operatable  after years of storage.
● Built-in voltage meter to read voltage of vehicle’s battery.
● No degradation of performance at freezing temperature.
● No degradation of performance with age.
● More than 10,000 times uses.
● Shelf life – more than 10 years.

● Short circuit/Reverse polarity/Wrong connection protection.

Here is general  guide of jump starter choice for different engine size: