Dyson DC31 DC34 DC35 DC44 battery disassembly for replacement: Not Worth It. - YouTube
Amazon.com: Biswaye 22.2V DC31 Battery Replacement for Dyson Type A DC35 DC34 DC45 917083-01 DC44 (Not Fit Type B, DC44 MK2) Animal Cordless Handheld Vacuum Battery : Home & Kitchen
Powtree 2-Pack Replacement Dyson Battery Dc31 Type A, 22.2V 5Ah Replacement Battery for Dyson Type A DC31 DC34 DC35 DC44 DC45 Animal 917083-01 Handheld Vacuum (Not Fit All Type B, DC31 DC35
Amazon.com: ARyee 22.2V 4Ah Type B Replacement Battery for Dyson Cordless DC44 Animal DC31 DC34 DC35 DC45 Vacuum Clearner Only Fit for Dyson Type B, Not fit Type A : Home &