BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS

This application provides a battery cell, a battery, and an electric apparatus. The battery cell includes: an electrode assembly, including a body portion and a first tab. A first size L of the body portion in a length direction thereof is greater than a second size L of the body portion in a width direction thereof. The first tab is located on at least one end of the body portion in the width direction. The first tab has a third size L in the length direction. The first size L the second size L and the third size L satisfy 0.5LLL The battery cell according to an embodiment of this application is intended to resolve a technical problem of severe heat generation by a tab.