APC Symmetra RM 8-12kVA Battery module. Battery technology: Sealed Lead Acid (VRLA). Weight: 28 kg. Colour of product: Beige. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 0 - 95 %. Form factor: Rack-mount, Dimensions (WxDxH): 165.1 x 586.7 x 134.6 mm, Battery type: Maintenance-free, leakproof