We only use high-quality lithium-ion batteries to ensure long-lasting power and battery life. Our batteries are designed to power your Fieldsheer product for hours, ensuring you stay warm and comfortable. These 7.4-volt batteries are compatible only with Fieldsheer 7.4-volt heated gloves. **Additional battery is sold as an individual unit. Add a quantity of 2 to the cart for a complete set of spare batteries for your gloves.