Valve Regulated Lead-Acid Battery Degredation Model for Industry Applications

The demand for battery energy storage systems (BESS) is exponentially growing due to a global focus on sustainability and emissions reductions. VRLA batteries have been used extensively in standby BESS applications due to their wide availability and low cost. However, these batteries are highly susceptible to extreme degradation and loss of life when applied to baseload power variability. This makes the lead-acid battery chemistry unviable in large BESS systems. This paper presents a numerical degradation model that uses base load power requirements to size the batteries and determine the extent of degradation at end-of-life conditions. Thereby providing industry with a low computational cost battery degradation model that is uniquely suitable for industry applications.