Technical data: Battery: 18V / 5Ah Battery technology: All 18V XR and XR FLEXVOLT batteries in any Ah class No load speed (min-1): 9000 Drive spindle: M14 Disc diameter (mm): 125 Weight (with battery in kg): 2.5 Triaxial vibratory surface grinding (m / s2): 4.4 Uncertainty factor K1 (m / s2): 1.5 Sound pressure level LPA (dB (A)): 85.0 Sound power level LWA (dB (A)): 96.0 Uncertainty factor (dB (A)): 3.0 Innovative brushless motor technology Epoxy-reinforced windings Optimized fan system Electronic brake reliably stops the disc in seconds (