150.6. The rent must be payable before the expiration of the leasing period, except any amount due under the obligation of guarantee provided by a contract of lease with guaranteed residual value and charges relating to the degree of use of the goods, where they are exigible.
No charge relating to the degree of use of the goods may be required unless the goods are equipped with a device enabling their degree of use to be measured in hours or in kilometres and the rate per hour or per kilometre is specified in the contract.