Have 9 flights now on a new G20ei, great running little engine. However, this 4.8v ignition is a battery draining beast. I am getting one sometimes two flights out of a new, fully charged 1800mah 4 cell Nicd. I have changed out one new pack for another new pack and having the same issue. Anyone else ever experience this condition? What i am thinking of doing is installing a 2500mah 2 cell Life (A123) pack with two diodes to reduce voltage. Any thoughts, comments, suggestions, etc. will be appreciated.