Originally Posted by cjels
I was a Just electric Man, had some planes with Hacker Motor, model motors = to 80 cc, some =50cc and 30 and 20cc electric . As soon as you start flight flying hard the batteries just does not last. I my case My su29s with flight power batt burned while in flight. The failure I had with batt it just does not justify the cost. I have hyperion chargers and the batteries are charged and stored correctly. Gas are the only way to go from 20cc and up.
My 5 cents off experience.
This is an older posting. FYI I'm using those A123 battery packs which DO last for many years, hundreds of flights, with little or no loss of performance.