Curious lipo behavior

[Gustav]

just wondering if anyone else has come across this before.yesterday i ran an evo20 3300 3s pack that's been stored for the last 6 months,stored at the recommended voltage.Charged it up and ran it (xxxt with a basic4200),basically it wouldn't hold voltage underload,Li-saver was kicking in from about 3/4 throttle with the pack fully charged,tried 2 different Li-savers both said the same thing.tried replugging in loads of times,sometimes it will read a fully charged pack as 4s until i run it for a minute and then replug in the pack,couldn't have been that though since i ended up drawing 2400Mah from it.

anyway charged it and ran it again today,exact same setup,and it ran like a champ,ran it for about 25mins and the li-saver still hasn't kicked in yet.So what gives? it's slightly warmer today but not hugely so.do lipos need to be cycled after storage to wake them up?