Originally Posted by brickshouse

Me and 3 fellow racers have had our smc batteries 'poof' and was wondering if anyone else been having problems with them. I had a 5200 40cmax and a 4500 28c sport max, both with less than 50 cycles on them. I bought them back in November, always well kept and properly taken care of. I have a old 4000 28c in the fake red carbon case that has had a couple hundred cycles on it and it has more punch and no 'poofing' like the other batteries. The other guys I mentioned have had the same problems with their 5200 ad 4500 batteries as well. I noticed SMC took their thread down, didnt know if they were ragged on for poor quality or what. Real bummer when you got over 200 bucks in batteries down the drain......