How do I get out of a lease for a Renault electric car battery?

Battery leasing was used mainly to reduce the upfront cost of going electric. Renault Group only has ongoing ones for a few older models such as the Zoe. Photograph: UrbanImages/Alamy

I own an eight-year-old Renault Zoe and lease the battery for £50 a month from Mobilize Financial Services. As the vehicle is getting older, I asked what would happen to the lease if the car broke down and was too expensive to repair.

Mobilize says I have two options: to buy the battery and end the lease or pay for it to be removed and returned to Renault.