Amp hour capacity testing in progress for Shorai LFX21 .. these test take about 3 hours per cycle with a two cycle min. charge/discharge rates are set at about 1C. discharge rates are limited to amount of heat/amp discharged into host wet pb truck battery.
note LFX21L6 resting voltage of 14.17v after sitting for several months
LFX21 cycle 1 results: 5,890 milliamps in .. 5,494 out