I have a small sky surfer that runs a a 7.4volt 250mah battery what will happen if i run a 7.4volt 900MAH battery will it burn anything out???????
thanks to any replies
Longer flight time and as long as the plane balances fine you will be OK.
Top speed will not increase, but you will likely not be able to fly as well at slow speeds.
Have fun with it- That's what you bought it for
More mAh increases the flight time, but adds weight. As long as it's still 7.4v nothing will happen with your motor. But you are changing the wing loading as JPN said.