How many litres does a canister (Water Pack and Fuel Pack) hold? 14 February 2024 07:52 Updated Both the water and fuel canisters have a capacity of 9 litres per canister. Related articles Are the lids of the canisters lockable? HYMER Backrack+ Wheel Holder How much does the Fuel Pack weigh? Does the number & light bar have to be attached to the vehicle when transporting the canisters? Backrack+ Canister