1. Inventory storage battery 2. 12v 4ah-200ah Lead acid battery 3. CE, RoHS 4. Maintenance free operation 5. OEM Manufacture Cycle life: over 500 timesMaximum Continuous service rating: 50WCharging time :about 6 hours, depending on the capacity and charging currentTemperature and Humidity requirements: The normal condition should be: Temperature -10°C-50°C, humidity≤85%,Air pressure should ...