but 100% no chance of it working if it was never fitted.
To be honest the life put on airbags was based on an assumption that they would age but in practice they have been found to be more durable so no one changes them.
The battery on my old MG ZR was a Yuasa and lasted 7 years !Battery died, after only 2 years service so a new Yuasa 65Ah battery fitted.
Sundance