I appreciate your company for shipping the product to be very early!. I have a few questions to ask: (1) what is the warranty period of the jump starter ? (2) do you have a VIDEO to teach me how to use of the various functions of this car jump starter as I am not sure how to use it? (3) when I received this product just now, the led panel (blue) shows 85% level. Why Ithe light function cannot light up after I press the "power" button and "on" ? I have not used the jump starter yet on my auto because the car battery is function. Your early response is much appreciated.