Battery Energy Power Solutions is a leading provider of innovative power capabilities in Australia and worldwide. We use a unique ‘in-jar formation process’ to manufacture gel valve regulated lead acid (VRLA) batteries in Australia. The technology was developed in collaboration with the Commonwealth Scientific and Industrial Research Organisation (CSIRO). Through design optimisation, we have been able to extend service life. This strategy has proven successful for over a quarter century of field operation under Australia’s harsh conditions in both telecom and energy storage applications. Our solar hybrid systems provide hundreds-of-kilowatt-hours of battery storage each. Moreover, thousands of sites that have been in field operation for over five years. Herein, we examine system topology, duty cycle and battery analytics from these sites. Furthermore, we assess areas for continued improvement through equalisation optimisation, battery management, and complementary technologies.