The Scosche PBJ300 is the compact and lightweight portable answer to vehicle emergency situations. It’s advanced technology and ample power will jump start your car, truck or a motorcycle when the battery is low or completely dead with the 5,400 mAh 300A peak portable battery. Use it to jump batteries with a 4 or 6-cylinder engine that is up to 3.5 liters. The 5,400 mAh portable battery stays fully charged without any recharging needed for up to 6 months. The 5-Volt (2.0A) USB port quickly charges any USB device such as smartphone, GPS, camera from the portable battery. Press the power button to check the 4 separate indicator lights to show you where the batteries power level is currently at from either a low, 50%, 75% or a full charge. The flashlight has SOS mode and a strobe in the case of an emergency in very low light or while out at night. Our jump starter gives you more than our competitors does with a total of 10 built-in safety protections such as short circuit, timeout, spark-proof, over discharge, reverse charge, over current, over voltage, overheat, override capability, polarity and spark-proof protection to keep you, your vehicle, and the jumper unit safe. The spark-proof protection prevents sparks from happening and the boost button overrides the jump starters low voltage protection to jump start the battery when the voltage is low or fully discharged. The slim and lightweight durable design provides a long-life span for years of use and at only 3” wide x 6” long and 1” thick the jump starter easily stores inside a trunk or glove compartment with the included carrying case. This portable battery jump starter is backed by Scosche's Lifetime Tech Support and 1-year warranty.