HENYED New mini dual USB inverter 300w The pictures as below: 300w Mini type The features: 1. The use of single-chip digital control program, each product voltage, frequency, protection points are basically the same. 2. The input side has positive and negative reverse protection, the inverter does not work, re-connect correctly, the inverter is working properly.. 3. Truly short circuit protection, you can short-circuit countless times, works well when connect correct. 4. 300W can withstand 3000W or even more power load impact, play a very good overload protection as well. 5. No-load voltage and full load voltage changes in the range of ± 5V on output voltage. 6. Different load, different input voltage frequency range of ± 1Hz 7. Dual USB 2.1A + 2.1A, you can charge IPHONE, IPAD and other high current devices.Intelligent identification of charging current. 8. At full load, work a few hours after the test inverter's temperature around 40-45 ℃ . 9. 300W