I have an old heli that i want to fix and it doesn't take a lipo battery. It uses a pack made out of 8 AAA batteries connected in series, so i have to make one of my own. From my knolwedge about batteries (witch is not much) the batteries capacity (ie how much time you are gonna be flying the thing) is determined by amps. So should i go with the biggest amount of amps on the batteries? Thanks in advance.