Battery pack

The invention relates to a battery pack (100) with at least one battery cell (120) and a protective circuit module (130) for protecting the battery cell (120) from over-charging or over-discharging. In order to be able to reliably sense a temperature of the battery cell (120), the protective circuit module (130) comprises a temperature sensitive element (150) that is thermally interconnected with the battery cell (120) by a flexible circuit board (140).