My sister is going to get married, my mother has been in her sister’s dowry, to buy a lot of things, I found the house a new car last home, started to buy the home we think, then I was in her sister’s dowry. When I was relatively small, it is curious that black is what hard things, I have asked my mother, my mother said is power supply , is an external power supply , battery charger, through this electric rushed to the electric car, it is safe, that the volume is not too large, it is also more convenient to carry. Really good, and that the role of a great, if necessary can also go to the supermarket to buy home.