Amazon.com: POWTREE Upgraded 6000mAh 22.2V DC35 Battery Replacement for Dyson DC31 DC34 DC35 DC44 DC45 917083-01 Battery Handheld Vacuum Cleaner Battery(Only Fit for Type A, Not fit All Type B Model, DC44
Amazon.com: JJXNDO DC34 Type B Baterry Adapter for Dyson DC35 DC34 DC31 DC56 DC57 DC44 Type B Handheld Vacuum Cleaner, Converter for Dewalt 20V Li-ion to Replace for Dyson Type B Battery[ONLY