It will fit in, and it will power on your drone. However, due to the different voltages, the 'Low Battery' warnings will be off and dangerously low for the Plus battery to be taken to. In addition, because the posts for the individual cells has changed you would need to get a Plus Charger or find some non existent Plus battery leads. There are members (I am one) who have successfully flown a Plus with a 480 battery and while the voltage differences are still there, they are now reversed so that when you hit 'Low Battery' its actually only at 50%.