told you...

i had the exact same thing happen to me. i was running not even a season old nano's (probably 30 or so cycles). i bought an SMC for the heck of it and it was like a totally different system. like going up two teeth or something like that. the difference was dramatic. you just don't notice the drop off from inferior batteries that start falling off right after the first charge. you may notice it if you only race the same track weekend after weekend, but if you have a couple different tracks that change their setup's at all, it's hard to notice for us average joe's. until you put the SMC in there.