Bettery pack and method of manufacturing the same

摘要

A battery pack includes a vessel 2, a battery mounted in the vessel 2 and a circuit board 3 connected to the battery. An opening 6 is formed on the surface of the vessel 2. A thin-film terminal portion 12 is formed on the circuit board 3 so that it is exposed externally through the opening 6. In this configuration, the battery pack can realize reduction in the weight and thickness and also reduce the production cost.