A coin-shaped battery includes a cathode case having a crimp portion in the periphery of a bottom face, and an anode cap having a flange with an extended portion and a turn-up portion. In particular, node trees are used to represent portions of files systems designated for synchronization. An elastomeric base material may be interposed between the outer shell and the bearing pad to provide additional resiliency. The device further includes a gas sensor and a water sprinkler, which will disconnect the electric supply to the appliance and activate the water sprinkler, when a specific amount of control gas occurs in the appliance.