Overdischarge - The process of discharging a cell or battery beyond its cutoff voltage and possibly into voltage reversal.
Temperature Cutoff (TCO) - A protective or safety device (e.g., thermostat, PTC, etc.) which senses temperature (e.g., in a battery) and opens or cuts off the electrical circuit if the specified temperature is exceeded, thus preventing a further rise in temperature due to the charge or discharge of a battery.
Nominal Voltage - The characteristic operating voltage or rated voltage of a battery.
Crest factor (Fc) - Ratio between the peak current value to the rms current value.
Continuous Test - A test in which a battery is discharged to a prescribed end point voltage without interruption.
Spiral Wound - An electrode structure of high surface area created by winding the electrodes and separator into a spiral-wound, jelly-roll configuration.
Drain - The current withdrawn from a battery during discharge.
