How do I pay at the charger?

There is a tap and pay terminal onsite that allows you to preauthorise your transaction and ultimately make payment when your charging session is complete. The preauthorisation is for £40. This money is not taken from your account but ring-fenced by your card provider. Should this need to be returned to you for any reason, then this is handled by your card issuer in accordance with their terms and conditions.

Video:
https://www.youtube.com/embed/IRlKkSLmOrU?start=32&end=56