I have a slight problem with an rc helicopter. It is a JiaYuan 1698 and when i tried to use it didn't have enough power to lift it's self off the ground. It uses a battery made of 8 AAA batteries connected in parallel. I later discovered that it had a loose wire on the motherboard of the heli and i am not sure weather it is a connection issue or a power issue. Now the wire is completly disconected, I will solder it at some point, but the question still applies. Do i need a bigger battery or not? Please give me advice. Thank you in advance.