Switchable Voltage 12V/ 16V / 19V Car-30000 mAh-Portable Battery1. LED illumination light2. 19V voltage output indicator light3. 16V voltage output indicator light4. 12V voltage output indicator light5. 12/16/19V---2A/3A/3.5A outlet6. Electrical quantity indicator light7. Key switch8. USB 5V--- 2A outlet9. 15V--- 1A charge inlet10. Master switch11. 12V--- 300A auto start outlet** What should you do if your drop anchor on the highway or can't start in the cold weather?** What should you do if your mobile no power when you are out of door?** What should you do if your laptop no power when you are negotiating customer about a big order?Don't worry right now， my mini portable jump starter can solve your emergency issue.Question: which function do start power supply have? Answer:the starter power is mainly used to charge the portable electronic devices，suchas mobile smart phone，tablets，portable gaming，systems，digital cameras，camcorders， bluetooth headsets，portable GOS devices，and any other DC 5V powered electronic devices.It can also jump start a drained car battery with the jumo starter cables.There'salso an included ultra-bright LED light that can be used as a flash light or SOS signal flashing light.Qutstion:how can LED emergency lighting be truned on? Answer: turn master switch of start power to "ON" and press"power button" for 3 seconds to start flashlight function. Afterwards， press "power button" LED function to turn normal on to flickering，SOS distress signal light; press "power button" to directly turn it off.Question: the start power supply has 19V and 12V output functions， how can V number be switched?Answer: the start power supply can guarantee several V number selection. Before charging with startpower supply，press "power button" for short time to switch among different V numbers andcorresponding indicator light are normally on， Different products use different voltage， eg.: laptop generally have 19V and 16V. Before use， please confirm products V number. Question: how can an auto be started?Answer: if an auto can not be started by the storage battery because of various reasons，the startpower supply can exert supernatural effects.At first ，inspect electrical quantity of start power. Generally，the auto can be started when there is one check display of indicator light. Connect positiveand negative polarise of storage battery with positive and negative polarities of storage battery. Afterred polarities and black polarities are clamped，insert plug of battery terminal into start outlet of startpower，turn auto key to star auto. After start the auto，remove clamps from battery. Question: Will reversing polarity connections of the jump start cable damage thevehicle?Answer: No，the start power is very safe with comprehensive protection， If you accidentally connect the red and black cable clamps to the wrong polarity terminal and attempt to jump start the vehicle，the fuse will be blown and will cut the powerimmediately to prevent injury and avoid damaging the vehicle. Question: What if it doesn't jump start the vehicle? Answer: If the start power fails to jump start the engine，please wait at least 10 seconds before attempting to try again，it is also highly recommended to replace the vehicle battery once every 2 or 3 years.Question: How many times can the start power jump start a vehicle?Answer: Approximately 20 times with a 100% fully charged battery.Results may varydepending on owner usage and vehicle engine displacement. Question: how can start power supply be charged? Answer: turn product switch to "ON"， Use home adapter or Car adapter connected to 220V(110V-240V) commercial power or 12V car powersupply，product will begin to charged. the indicator light will be flash all time. when four indicator light are on，it indicates the power supply has been full charged! Question: How long will it take to fully charge the start power to max capacity? Answer: 5-6 hours.Depending on the current battery charge indicator. Question:How long is he start power's standby time? Answer: The typical standby time of the start power is 3 months fully charged. It is recommened to charge the start power once every 3 months to prolong its service life.Result may vary depending on owner usage. Operation Instructions:1.Before start the car，please make sure the hose minimum 2pcs LED indicated light on，then connectthe blue plug fully seated into the host socket， and confirm the cable indicator is off.2.Connect the Red clip to the positive(+)battery terminal， Black clip to the negative(-)battery terminal.3.Start the vehicle.4.When the vehicles starts， please make sure pull up the clamp cable from power bank and then from the car battery terminals. Please do not connect the red and black clip to the vehicle battery terminals more than 30s. Parts list of vehicle portable power products 1. one(1)portable bag. 2. one(1)2-round-pin plug power adapter for Russia and Europen countries(if you want 2-flat-pin plug adapter，please leave a message)3. one(1)vehicle cigarette lighter cable(car adapter)4. one(1)laptop charging connecting cable5. eight(8)laptop converter plugs6. one(1)4-in-i mobile phone charging cable7. one(1)set of startup clamp wire