Professional Design: This power tool battery adapter converts 18V batteries for use with Einhell power tools, eliminating the need to purchase additional batteries. Stability and Safety: The adapter is designed for stable performance, ensuring a secure connection between the battery and tool to prevent power failure or loosening. It meets strict safety standards to help prevent short circuits and other hazardous conditions. High Flexibility: This adapter allows users to utilize existing 18V batteries with Einhell power tools, expanding tool compatibility and enhancing user flexibility. Environmentally Sustainable: By using this adapter, battery waste and disposal are reduced, helping to extend battery service life and improve recycling rates, contributing to energy conservation and environmental protection. Premium Materials: Constructed from high-quality ABS material, the adapter offers excellent strength and durability for long-term use and reliable connectivity.