Performance evaluation of recombinant lead-acid battery valves

Since the pressure relief valve regulates the internal pressure and oxygen content, it directly affects the efficiency and ultimately the life of a valve-regulated lead-acid battery. Despite the importance of the valve, however, no tests have been developed that can be used to evaluate the long-term performance of the valve. Although the test that is described is not designed to determine life expectancy, the results can be used in a comparative manner to determine which valve design is more likely to continue to perform as it ages. The Sonnenschein-type valve performed best after the simulated aging test, while the Bunsen-type valve performed the worst.<>