Features: Experience powerful performances with our high capacity 18650 and 21700 lithium batteries, delivering long lasting energy and high discharge rates for demanding applications. Featuring strong lithium construction with built in protect against overcharge, over discharge, and short circuits, ensuring extended life and stable stability. Ideal for model enthusiasts and families seeking dependable power sources for their remote controlled toy , enhancing user experience with consistent energy output. Perfect for high speed cars, drones, and outdoor adventures where sustained power is essential for uninterrupted play and operate . With easy carry design and broad compatibility, these batteries easily fit various devices, offering portable convenience for quick swaps during extended use. Specifications: Component : lithium batteries Styles: multiple for option Package Includes: 2xBattery Pack note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.