The SBS15 is a Rechargeable Battery features a lead-acid technology with bolt terminals. It is designed to cope with raised temperatures and harsh environments. This battery is manufactured to the highest international standards. The positive plates - pure lead grids manufactured using an unique process, negative plates - provide perfect balance with the positive plates to ensure optimum recombination efficiency and separators - superior quality microporous glass mat separator with high absorption and stability. Electrolyte - high grade dilute sulfuric acid absorbed into separator material and the terminal design - leak resistant patented dual seal terminal design. Self-regulating pressure relief valves - prevent ingress of atmospheric oxygen and the flame arrestors - built into each bloc for increased operational safety.