This Schumacher XP400 Instant Portable Power Source has an on/off switch that activates the jump start mode. A built-in charger for automatic charging of the internal battery; just connect an extension cord to the plug to recharge (cord not included). The battery status LEDs tell when a battery is charged or needs to be charged. The Sure-Grip Clamps fit both top and side-mount batteries. The cable will stay flexible in the coldest weather. A maintenance-free, sealed lead acid battery allow for storage in any position.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov