Old small lightweight battery vacuum. Vacuum works briefly on the battery then cuts out. I think that the charger isn't working hence the battery is nearly flat. Alternatively the lithium battery has died.
A replacement charger is about £25. The battery seems to be obsolete.
It wasn't my vacuum and I don't need it so I'm not going to try fixing it but if anyone wants to try it can be collected at any reasonable time the The Howe, Lyth Valley opposite Brigsteer.