We have a 32 amp/7.6kWh charger and a Renault Kangoo maxi with a 33kWh battery. How long will it take to fully charge this vehicle.

You will need to know the following

Battery power of vehicle in kWh
The chargers rated current in amps
The voltage at your installation - this is 230v

First work out the charger power (CP)
Charger Power= Charger rated current X voltage
CP= 7360w
Then convert to kW
7360/1000 = 7.36kW

Finally work out Charge time (CT)
Charge Time = Battery Power kWh / Charger Power kWh
CT = 33/7.36
CT = 4.5 hours