This is a multi-functional power supply. It is with high efficient 33140 LiFePO4 battery cells, advanced BMS( battery management system) and excellent AC/DC transfer. It can used both indoor and outdoor, and it is widely used as a backup power for home, office, camping and so on. You can charge it with mains power or solar power, and adapter is not required. The product can be 98% full within 1.6 hours, so fast charge is achieved in real sense. The product can provide constant 1200w AC output.There are also 5V,12V, 15V, 20V DC outputs and 15w wireless output. It can work with different scenarios. Meanwhile, advanced power management system is configured to ensure long battery life and safety.1)Compact, light and Portable 2)Can support mains power and photovoltaic charging modes; 3)AC110V/ 220V output,DC5V,9V,12V,15V,20V output and more. 4)Safe, efficient and high power33140 LiFePO4 lithium battery cell. 5)Various protection, including under voltage, over voltage, over current, over temperature, short circuit, over charge, over release and so on. 6)Use large LCD screen to display power and function indication; 7) Support QC3.0 quick charging and PD65W quick charging 8)0.3s fast start, high efficiency.What is your terms of payment? A: Alibaba online fast payment, T/T or L/C Do you test all your chargers before shipping? A: All major components are tested before assembly and each charger is fully tested before shipped Can I order some samples? How long? A: Yes, and usually 7-10 days to production and 7-10 days to express. How long to fully charge a car? A: To know how long to charge a car, you need to know the OBC(on board charger) power of the car, the car battery capacity, the charger power. The hours to fully charge a car =battery kw.h/obc or charger power the lower one. For e.g, the battery is 40kw.h, obc is 7kw, charger is 22kw, the 40/7=5.7hours. If the obc is 22kw, then 40/22=1.8hours. Are you Trading Company or manufacturer? A: We are professional EV charger manufacturer. 1.Please pay attention to the input and output voltage range when using this product. Make sure the input voltage and the power should be within the range of the energy storage power supply. The life span will be prolonged if you use it properly. 2. The connection cables must be matched, because different load cables correspond to different equipment. Therefore, please use the original connection cable so the performance of the device can be guaranteed. 3. The energy storage power supply needs to be stored in a dry environment. Proper storage method can prolong the service life of the energy storage power supply. 4.If you do not use the product for a long time, please charge and discharge the product once every month to improve the service life of the product 5.. Do not put the device under too High or too low ambient temperature, it will shorten the service life of electronic products and make damage of the product shell. 6. Do not use corrosive chemical solvent to clean the product. Surface stains can be cleaned by cotton swab with some anhydrous alcohol 7. Please handle the product gently while using, do not make it fall down or disassemble it violently 8. There is high voltage in the product, so do not disassemble by yourself, lest it may cause safety accident. 9. It is recommended that the device should be fully charged for the first time to avoid inconvenience caused by low power. After the device is fully charged, the fan will continue to work for 5-10 minutes after the charging power cable is removed for standby heat dissipation (the specific time may vary with the scene temperature) 10. When the fan is working, prevent dust particles or foreign matters from being inhaled into the device. Otherwise, the device may be damaged. 11. After the discharge is terminated, the fan continues to work to lower the temperature of the device to a proper temperature for about 30 minutes (the time may vary with the scene temperature). When the current exceeds 15A or the temperature of the device is too high, the automatic power-off protection is triggered. 12. During the charging and discharging process, connect the device to the charging and discharging device properly before starting the charging and discharging device; otherwise, sparks may occur, which is a normal phenomenon 13. After discharging, please allow the product to stand for 30 minutes before charging to increase the life of the product's battery.