Dyson 22.2v Extended Battery Replacement For Dyson DC44 DC35 DC34 DC31 (Type i, Not DC44 MK2) 917083-01 Handheld Vacuum Cleaner Voltage:22.2v,Capacity: 2000mAh,Compatible with Dyson 22.2v 1500mAh Battery! Replacement Battery for Dyson DC 31 DC 34 DC 35 (except DC 31 34 35 type B)917083-01 91708301 Handhe No memory effect. Can be charged or discharged as needed without loss of capacity. Made of lead-free SMT process,fit with the requirements of environmental protection Please note the battery interface,Any problem 24 hours feel free to contact us!