Kurt 2022:
Listen dont get all butt hurt. But when you start throwing out battery voltage and Ohms law the original poster had an engine problem not a battery problem I am sure you are very knowledgeable howeverr the manual the guy posted clearly says on page 8 it is a 4.8 - 6 volt ignition system. They guy had 5+ volts left in his battery. As well the manual states that a 6 Mah battery will give 1.5 hours + of flight time.

I am sure if you had a question you would want it answered in a direct way, am I right? I know Ohms law and V-I/R as well. I just dont see what it had to do with the original question.

My 2 cents worth.

Glenn