ORIGINAL: Campy
"Red" Scholefield from the RC Battery Clinic (
http://www.rcbatteryclinic.com/ ) told me, via e-mail, that the recommended way to store lipo's is to charge or discharge them to 3.7 volts per cell. Red said this was the way the manufacturers keep their cells prior to building a pack.
I spoke with a leading manufacturer for lipo, they are based here so some of you might be able to guess who. There is no truth in needing to store a lipo at 3.7V. Manufacturers DO NOT store it at full charges because:
i. there is less risk if it shorts
ii. they do not need to charge the battery (extra work, extra cost)
Its safe to store your battery at full charge even. Just do not store it near 3.1V or 3.2V, its obvious why. Hope this clarifies things for all.