Hi @Getty,
Welcome to the Dyson Community!
DC30 and DC31 were the second generation of Dyson handheld vacuums, launched back in 2009. We continued to support our older machines with spare parts and repair options far beyond their original 2-year warranties. However we’ve now discontinued support for some legacy machines, to focus on our more recent technology.
As these batteries aren’t manufactured by Dyson, we wouldn’t be able to vouch for their safety or compatibility. We have to advise against using non-genuine batteries with your Dyson machines as we can’t guarantee they won’t cause damage.
I’m sorry we’re not able to give a more comprehensive answer to your question in this instance.
@Jack Thanks Jack.
I'll rephrase it then. Is the genuine Dyson replacement battery for the DC30 the same as that for the DC31?
Hi @Getty,
No - there are multiple part numbers for batteries for these machines, depending on which model and variant you own.