RE: 2.4 poll - Requesting pilot experiences
A few years ago I was flying my Midstar on my Hitec (72) radio and noticed the rudder twitch a few times. At first I thought it was me (first flight of the year) but when I realized it was something else I landed immediately.
Sure enough my battery was very weak. Since then I cycle all my batteries and keep a log on them so I can track their performance. When a battery's capacity falls below 75% I replace it. I believe the practice of cycling and knowing the capacity of your batteries could help everyone.