Dyson DC16 vaccuum charger rated 28Vdc on the output, but measures 24-27V on connecting and (very) slowly drops to 18V while connected. What could be the problem? : r/AskElectronics
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5.0 Ah DC16 21.6 Volt Lithium-Ion Battery for Dyson 912433-03 12097 BP01 Animal 190268463126 | eBay
DC16 Replacement Battery for Dyson DC16 Battery Pack 12097 912433-01 912433-03 912433-04 [21.6V 3000mAh]: Amazon.co.uk: Home & Kitchen