NOVELTY - The system (101) has a heat exchanger configured to be thermally coupled with one of a set of electrical connectors (102) such that heat is transferred from the electrical connector, and the heat exchanger is configured to be thermally coupled to a fluid channel (121). The heat exchanger is configured to deform for conformation with the electrical connector with which the heat exchanger is configured to be thermally coupled. A bladder (107) is configured such that heat is transferred from the electrical connectors to the bladder through thermally and electrically insulating material.    USE - Heat transfer system for transferring heat from an electrical cell of a battery pack of a fire suppressant system of an automobile (all claimed).    ADVANTAGE - The system can transfer heat from an electrical cell through an electrical terminal or terminals while reducing the risk of shorting the terminals, and comprises a single bladder to be used to extract heat from the terminals of a number of electrical cells regardless and irrespective of polarity without the need to provide separate provisions or components for electrically isolating the electrical terminals so as to prevent the components from shorting. The bladder can be configured to release the fluid onto the fire during occurrence of event of fire or due to overheating so as to reduce or limit heating of the electrical system. The system can be electrically connected and disconnected during assembly and disassembly without breaking the fluid channel or exposing to external conditions.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a bladder for a heat transfer system    (2) a heat transfer system for cooling an electrical cell    (3) a fire suppressant system for an electrical cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic exploded perspective view of parts of a heat transfer system for transferring heat from electrical cells.    Heat transfer system (101)    Electrical connectors (102)    Bladder (107)    Projections (118)    Fluid channel (121)