The BaseCamp B.O.S.S XB13 is the first and only hot water system using D-Cell batteries to gain CSA safety certification. This great new product is cordless and portable. Simply insert D-Cell batteries into the power pack, drop the pump in a bucket of water, flip the ignition switch and dial in your temperature for a great shower anywhere. All you need is a water source, a 1lb. propane cylinder, and 6 D-Cell batteries to have hot water at your fingertips in even the most remote places. PORTABLE. POWERFUL.