Flylinktech 2000mAh 22.2v Type B Li-ion Extended Battery Replacement for Dyson DC44,DC31,DC34,DC35 Type B Handheld Rechargeable Battery 965557-03 965557-06 22.2v,2000mAh Battery for Dyson Dc35 Dc34 DC44 Dc56 Handheld Cordless Bagless Battery Operated Vacuum(Type B Battery). 18650 cells,Made of lead-free SMT process,Environmental Protection Built in high quality battery cells,No effect on the battery,Charging at any time. Fit series DC35, DC31,DC31 Animal, DC34, DC35, DC35 Animal, DC35 Exclusive 100% Compatible with original manufacturer equipments and chargers.