I bought some panasonic 3000s (the first ones) when they first came out, and two more about 3 months later. I did everything that Trinity said, and for both sets, two runs after i bought them the run time was down to 2500 mahrs and voltage was crap. That is why i bought 2400's, they stay good! I think my experience with the panasonics was mostly just bad cells, I can't believe Trinity could sell something like that! And a bit of it might be the method. I'm probably going to get some of these sanyo cells, cause I need a new battery or two. I don't know what exactly i should do to care for them though! There are at least 3 methods, and everyones swears by their own!