size: L165 * W79 * h40mm
Battery capacity: 50800mAh (real)
Intput Voltage: 12V
USB Output: 5V 2.1A
feeder mode: cc / cv 12v 1a
Output: 12V (2a) / 16V (3.5A) / 19v (3.5)
Start Current: 300a
Current perk: 600a (3s)
life cycle: 3000 times above
Operating temperature: -20~60 deg
High capacity 50800 mAh 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.
 

Specifications of High Power 50800mAh Multi-function Car Jump Starter Power Bank - Red