Charge without boosters The E-Charge Emergency Car Starter by Schumacher Electric Corp. allows users to get a vehicle's battery energized quickly and safely'#8212;without the use of under-the-hood jumper cables. E-Charge is hooked up from dashboard to dashboard, through DC 12V power outlets. After five to ten minutes, power is transferred between vehicles and the disabled vehicle's battery is energized to crank the engine.