ABUS RM0011. Battery voltage: 9 V, Battery technology: Lithium-Ion (Li-Ion), Battery life: 2 year(s). Diameter: 100 mm, Height: 33 mm, Weight: 220 g. Operating temperature range (T-T): 4 - 45 °C, Operating relative humidity range: 10 - 95 %. Certification: BS, DSE, VdS, CE. Package dimensions (WxDxH): 135 x 190 x 40 mm