So far as I know, the A123 nano phosphate chemistry is the only type that is okay with 30C discharges.
Do any of the batteries you are testing have inboard management circuitry?
'Gonna get me a six pack...push people off the highway!'
"they live off the carrion of our mutual distrust and bribe us with symbols that equate hatred with manhood."
"I mean at the end of the day, I was addicted to Starting Fluid for Christ's sake!"
"Yeah, that guy sure is terrible at touching moms"