i am using the C version of it so far, and its holding just fine.
been many months now. i would have to do an actual discharge test to tell anything. but i do know one thing they are LSD
guess i got them in early november, charged them up, and 3 are in use, one is parked, and its still acts happily charged, without a discharge of course i dont know anything, but lesser cells would have shown more reduction by now.
there is only one way to know for sure, ask me in 3 years