I have a problem with my acer aspire v11 touch, it says no battery detected. What will i do?

Well, it could be that the battery has shifted inside and isn't connecting correctly, the battery could be out of it, or the battery could be toast and not registering as in the device.

If the laptop is under warranty, contact the manufacturer about a repair/replacement.

If it isn't under warranty, then you have the option of opening it up and checking for the batteries connection or getting a new battery on your own, or take it to a local tech to do the work for you.