voltage drop under load may not be as important indicator as amp drop due to LiFePO4's very flat discharge curve. the instant battery no longer sustains 200amp... tests are stopped to prevent damage to battery. then fully discharge battery is immediately charged above 12.8v, then allowed to cool for balance of charge cycle to full.
main difference between my LiFePO4 tests and Joel's is the addition of actual amp hour measurements. which require special tools to measure. Joel has nicer Fluke meters than me
discharge tests are well underway for Shorai LFX21, LFX36, Earth-X ETX24, ETX36C. here ... http://www.advrider.com/forums/showt...757934&page=19