The Easergy T300 battery are designed for long power supply The output voltage is 12VDC The battery life is 10 years The operating temperature is -15°C to + 50°C during the charge and -20°C to + 60°C during the discharge. The storage temperature is -20°C to + 60°C. Mechanical dimensions are 170 mm in height, 165 mm in width and 197 mm in depth.