Product Features Simple battery maintenance a seal during the entire life without regular pay or reimburse acid maintenance. Excellent performance and high-strength tight assembly process, to prevent the active material shedding, increasing the amount of acid designed to improve battery life. Grid using a special lead-calcium alloy multi-strict control partitions, electrolyte impurities, low self-discharge. High quality separators, plate, pole, bus optimized design, the battery internal resistance, good high-current discharge performance. Safe and reliable battery reliable sealing, no electrolyte leakage risks. Valve opening and closing valve performance. Environmental clean no mist on the surrounding environment and facilities, no corrosion. Applications range radio communication system power appliances, medical equipment and instrumentation, uninterruptible power supply UPS office automation systems start shipping locomotives, railway passenger cars, such as lighting control switches, lighting power