I run a 2100 14.8 lipo in my ofna truggy box and it works great...I can never, ever see going back to a gel cell or stick packs again. I have raced an entire weekend on one charge with no issues. After 2 days of racing, I charged him up and it took 1500 mah, so it was about as low as it could go. You can top off Lipos as much as you want, as there is no memory with them. Also, you are supposed to store lipos charged (they do lose volts, but nowhere near the nimh do). Generally when I get home after a weekend of racing, I charge up the Lipo right away, and then it is good for the next race day...I leave it plugged in as well, but if I were to let it sit for months, I would likely unplug it