Dyson battery pack -V10 with screws. Part no. 969352-02

It was kept in a cool dark cupboard - unopened box. Here’s an AI overview of unused battery life if it helps: An unused battery lasts anywhere from 2 to 15 years, depending heavily on the specific battery chemistry and how it is stored.Shelf Life by Battery TypeAlkaline (AA, AAA, C, D): 5 to 10 years. These non-rechargeable household batteries slowly lose 2–3% of their charge per year.Lithium Primary (non-rechargeable): 10 to 15+ years. These have a very low self-discharge rate (about 1% per year) and hold power the longest.Lithium-ion (rechargeable phone/tool batteries): 2 to 4 years. Even when unused, they self-discharge by 2–5% per month and degrade internally over time.Nickel-Metal Hydride (NiMH rechargeable): 3 to 5 years. Older NiMH types lose charge rapidly on the shelf, though low-self-discharge variants last longer.Lead-Acid (car or backup batteries): 6 months to 1 year without a recharge. Leaving a lead-acid battery sitting uncharged for too long causes permanent sulfation damage.

@Megadale no idea - never opened the box until now to photograph- bought a different model of hoover so was no longer needed.

@sasa.ritlop thank you for your offer - I’m looking further the asking it very near thank you