NOCO Genius GB20 Boost Lithium Jump Pack. Safely jump start a dead battery in seconds! Features: UltraSafe™ reverse polarity protection, spark proof. Ideal for a wide range of small engine to larger vehicle applications. Dual ultra-bright LED's, seven (7) light modes including flashlight and emergency strobe. One year limited warranty. Included: GB Boost jump starter. 40" USB to micro-USB cable. 12V/2.1A USB charger. Battery clamps. Drawstring storage bag. User guide and warranty. Specifications: Internal battery: Lithium-ion. GB20: 400 amps peak / 200 amps starting current (up to 4.0 liter gas engine). Operating temperature: -22° F to +122°F. Micro USB (input): 5V/2.1 amps. USB (output): 5V/2.1 amps.