Features: The 18650 Battery Holder Charging Dock with Heavy Duty Cables offer versatile 1-4 cell configurations, built in charging capability, and high current support for reliability power delivery in various devices. Crafted from heat resistant ABS and copper contacts, this compact unit features secure spring connection, flame retardant construction, and integrated charging functionality without battery removal. Ideal for electronics enthusiasts, hobbyists, and outdoor adventurers requiring stable power solution for high drain devices like flashlights, drones, and emergencies equipment. Perfect for workshop projects, camping trips, or home backup systems where adjustable battery capacity and quick charging through the dock enhances operational efficiency. Its space saving design with reinforced cables ensures durability performances in demanding environment while maintaining optimal conductivity for extended battery life cycles. Specifications: Component: ABS, copper. Size:Approx.75.8x20.8x19.6mm/2.98x0.81x0.77inch Usage scenario: Project,LED Lamps , Suitable for electronic enthusiasts and projects. 4Option Type; Package Includes: 1pc Battery Holder note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.