I've read that lipo media begins to degrade after 2yrs and performance starts declining as a result. I've had lipos go bad stored at 50% capacity so I store mine at 80%. I do as Foxxrocket and check voltage about once a week, I do leave mine sit for months at a time and don't see probs. I did leave some at 50% and went out of country and lost them all - ever one puffed.

Your new 0610iNet charger has a function "TCS", terminal capacity selection - its a percentage figure, when you want to store one, get lipo hooked up and set TCS to what you want, I use 80%. Then start charger - it will either charge it to 80% or, if its over that already, it will discharge (slowly @ 300ma) it to the 80%. The charger though when it reaches the 80% it will beep and pause - think its 15sec and then proceed to do a full charge. You have to be there to pulll it off at 80% when it signals its there. It will not go to 80% and stop - I think you can change a default in user setup though so it will stop, but I'm not sure since I've not tried doing that.