A thermal sensing system includes a one-piece clip formed of a thermally conductive material. The clip includes a flat, substantially enclosed portion with tabs extending upward from it for connecting the clip to a printed circuit board. The clip also includes a contact portion that is configured to contact a thermally emitting object along a substantial portion of its surface. The thermal sensing system also includes a thermistor. The thermistor may be mounted to the printed circuit board or directly mounted to the clip. Heat is transferred from the thermal object to the thermistor via the clip. This system may be used in various arrangements in which temperature of an object is monitored or maintained within a given range. For example, the system may be used with a rechargeable mouse to monitor the temperature of the replaceable battery during charging and discontinue charging should the temperature reach a predetermined limit.