Now many small appliances, can be charged, and plugged, that is, AC, DC dual-use. For example, flashlights, razors, desk lamps, and small players can be AC, direct current dual purpose. Very convenient, in addition, there are many power tools like this. So when you go to the store to buy, you like to ask first, it is dual-use, and you bought it. Home, go out to use, are very convenient.