Terminate Voltage is used in the Impedance Track algorithm to compute RemainingCapacity(). This is the absolute minimum voltage for end of discharge, where the remaining chemical capacity is assumed to be zero.

This register is application dependent. It should be set based on the battery cell specification to prevent damage to the cells or the absolute minimum system input voltage, taking into account the impedance drop from the PCB traces, FETs, and wires.

Terminate Voltage should typically be set to the lowest possible value at which the system will operate to maximize run-time and capacity extracted from the battery. The gauge will automatically learn the load spikes characteristic of the system during operation and store it in Delta Voltage, thereby adding margin to capacity predictions when necessary. The effect is that StateOfCharge() will reach 0% at Terminate Voltage + Delta Voltage and RemainingCapacity() will represent the amount of charge available from the present depth of discharge until that voltage is reached.