In the past few months, I was getting into the habit of just storing my packs after RC's speed control LVC kicked in. I'd quickly check and make sure voltage wasn't too low, and off I'd go onto something else in life. My packs just sat there until today.Went through all my LiPo packs to make sure they are at storage charge voltage before they see the regular use again next year.
I got time, Sun's warmth, and two packs charged...to the track I go for some ST action.