A fire suppressant battery system has a battery pack, a non-conductive fire suppressant liquid in a fire suppressant bladder, and a fire suppressant protective layer. The bladder melts at a temperature above the battery pack's desired operating condition, has a cavity for receiving the liquid and contacts at least a section of the battery pack. The protective layer is positioned onto a portion of the fire suppression bladder's exterior surface that is on the opposite side to that which contacts the battery pack.