Introduction: In the recent past, the requirement of backup sources has increased exponentially
and necessitated massive energy storage devices like lead-acid batteries, and supercapacitors.
Materials and Methods: Especially these power backup resources become inevitable, while installing
critical diagnostic and lifesaving equipment. The storage system, usually lead-acid battery
bank, needs to be connected to the electrical appliances through a converter station where the energy
conversion takes place. Such practices are involved in medical emergency appliances of uninterrupted
power supply. The devices like monitoring instruments, patient’s artificial respiratory
systems, light loads in operation theaters, motor loads and other electronic devices of laptop &
desktop computers act as a source of harmonics. Apart from these, the sine wave / square wave
inverter also introduces harmonics as well as micro ripples on the battery side. These micro frequency
components have certain impacts on the storage system performance, efficiency, and utilization
of electrical energy.
Results and Conclusion: This work investigates the impact of micro frequency components on
the lead-acid storage battery when it is operating with a sine wave inverter supplying Resistive
load and RLE load. In order to perform the investigation, a hardware test bench was created. The
results of laboratory tests on a lead-acid battery show that batteries lose capacity and the utilization
gets reduced by the frequent use. This manuscript opens up a new direction of research in the
medical emergency backup system operating with a 12V DC system.