Dell PERC13 and PERC12 User’s Guide PERC H975 Series and PERC H965 Series cards

A Transparent Learn Cycle (TLC) is a periodic operation that calculates the charge that is remaining in the Energy Pack to ensure that there is sufficient energy. The operation runs automatically and has no impact on the system or controller performance. The controller automatically performs a TLC operation on the Energy Pack to calibrate and gauge its charge capacity. For the Battery Energy Pack, TLC is run after every 90 days. The operation can be performed manually, if required. For the supercapacitor Energy Pack, the TLC operation is performed after every system cold boot (DC Cycle) operation and after every 24 hours. If there are any errors during a learn cycle or charging, a Cold Boot (DC Cycle) operation is required to reevaluate the state of the energy pack.