?All of us are excited to have the Genius GB20 Lithium Booster in stock! The GB20 is a compact, yet powerful 400 Amp lithium-ion jump starter that delivers 4,650 Joules of starting power. Its patented safety technology features spark-proof technology and reverse polarity protection making it safe for anyone to use. Designed for use with gas engines up to 4 liters and doubles as a portable power source for recharging smartphones, tablets and more.

• Safely Jump Starts Dead 12V Batteries, Charging 400 Amps Peak Power, 4650 Joules

• Designed to Safetly Charge Powersports Batteries Includes Larger Apllications like cars and trucks up to 4L 40000cc Gasoline Engine Rating

• Ultra Safe - Features Spark-Proof Technology And Reverse Polarity Protection To Safely Jump Start A Vehicle

• LED Light - Ultra-Bright Dual LED Flashlight

• USB Power - Recharge Virtually Any USB Device, Including Smartphones And Tablets.