Product Introduction: Color: Green/Yellow/Red size: L165 * W79 * h40mm Battery capacity: 20000mah (real) Output Voltage: 12V USB Output: 5V 2.1A feeder mode: cc / cv 12v 1a Output: 12V (2A) / 16V (3.5A) / 19V (3.5A) Start Current: 300a Current perk: 600a (3s) life cycle: 3000 times above Operating temperature: -20~60 deg High capacity 20000mAh jump starter support an emergency jump start and entirely replace the included battery for a car startup. It also supports general cellular phones/laptops charging and completely replaces products similar to mobile power banks. With true powerful flashlight,three-function switch-over,emergency rescue,signaling,lighting,deterrence.defense and other powerful features - it is the ideal choice for night shift workers,overtime workers and many others. Five levels of power display indicate battery status,real-time recharging reminders,automatic shutdown under no-load condition. Over-current protects the device from overload,making it more convenient,safer and more energy-efficient. Cautions: 1:Take off the main unit within 30 seconds after starting the car. 2:Don't clip the two terminals at the same end on the battery. 3:Press the switch five seconds to start If you want to use LED for illumination and select the status (light, strobe,SOS,close) by pressing the switch to transform. 4:Store the product in a cool and dry place and away direct sunlight. Package includes: 1 x Power Bank 1 x Wall Power adapter 1 x Cigarette lighter charging adapter 1 x Cable 8 x Connectors for Laptops 1 x Four-in-one mobile phone adapter cable 1 x Set of startup clamp wire 1 x User manual Note : No retail package to save the cost and protect environment.