Now I read it and there is not much in it compared to the Norwegian contract.
It’s just how to do it if you sell your car privately or to a dealership.
It says nothing about terminate the rent. In practice it would also mean that you can terminate the rent since it is not specified that you can not do it
To end the rent so you must send a written cancellation to Renault Finance and arrange with them where to deliver the battery. this is usually to the nearest Renault dealer. if you disassemble the battery self, then they have to send the battery to France for testing before they can terminate the lease. you should not pay rent during this period. If the nearest Renault dealer disassembles the battery for you so it should not be necessary to send the battery to France for testing since they then can test before dismantling.
Contact Renault Finance and request they send the form
GENERAL TERMS OF FOR LEASE OF BATTERIES IN RENAULT EV
Here you will find all the conditions of lease agreement. includin how to terminate one
Like this one but in English (They have it certainly also in English)
I know that Oakley Design bought their cars without lease so it is possible to purchase the Battery also in England