Batteries are essential components of countless devices we use daily, from flashlights to laptops and even electric vehicles. While much attention is given to the chemistry, capacity, and performance of batteries, one often overlooked yet crucial component is the battery sleeve. But what exactly is a battery sleeve, and why is it so important? In this article, we’ll explore the purpose of a battery sleeve, its types, and the critical role it plays in ensuring battery performance, safety, and longevity.