Abstract
The article presents the development of a system used to evaluate the State of Health (SoH) of lead-acid batteries that serve as the energy source for Uninterrupted Power Supplies (UPS). The aim is to make this system as unobtrusive as possible, particularly for UPS units without built-in monitoring features. The system’s hardware framework relies on a compact electronic load applying two discharge pulses to the lead-acid battery. The system then computes the battery’s State of Charge (SoC) and SoH using the measured values and the developed software logic.