SS-LB-21V P#6515 Pcs/CTN 5 Battery Model# SUPERSTEEL.IN005 Charger Model# SUPERSTEEL.IN105 Li-ion Voltage : 21V D.C Speed Model : 6 Speed Control Wind Speed : 40m/s Air Volume : 680m3/h No-Load Speed : 0-21000RPM Weight : 1.75Kg