Dual Battery Compatibility: This for Snap-on battery adapter allows you to power your for Snap-on 18V tools using either for DeWalt 20V MAX batteries (DCB200, DCB203, DCB204, DCB205, DCB206) or for Milwaukee M18 18V batteries (48-11-1815, 48-11-1820, 48-11-1850). One adapter, two battery systems Extensive for Snap-on Tool Support: Perfectly replaces for Snap-on 18V slide-on batteries CTB7185, CTB8185, CTB8187. Compatible with a wide range for Snap-on 18V Li-ion tools including impact wrenches (CT8810), hammer drills (CDR8850), reciprocating saws (CTRS8850DB), grinders, lights, and fans Durable & Secure Design: Constructed from high-strength, fire-retardant ABS/PC material, this 18V battery converter is solid and durable, not a fragile 3D-printed part. Built-in battery lock and quick-release button ensure a secure, wobble-free connection Comprehensive Safety Protection: Built-in safeguards include over-voltage, over-current, over-heat, and short-circuit protection to keep your batteries and tools safe during use Plug-and-Play & Important Note: No tools or modifications required—simply attach your battery to the adapter and connect to your for Snap-on tool. Warning: This adapter cannot be used for charging. Always remove the battery from the adapter before using its original brand charger The YNDZ Battery Adapter is the smart, cost-effective solution for Snap-on 18V tool owners. If you already have for DeWalt 20V or for Milwaukee M18 batteries, this adapter lets you use them to power your for Snap-on tools, eliminating the need to invest in an entirely new battery system. Key Benefits: Cost-Effective: Saves you money by leveraging your existing for DeWalt or for Milwaukee batteries. Versatile: Switch batteries between tool systems, enhancing your overall tool ecosystem. Extended Runtime: Use high-capacity batteries (like for DeWalt DCB206 or for Milwaukee M18 High Output) to enjoy longer work sessions on your for Snap-on tools.This adapter replaces specific for Snap-on Li-ion battery models, including CTB7185, CTB8185, and CTB8187. Important Usage Notice: This adapter is for powering tools only. It cannot be used to charge batteries. To charge your battery, you must remove the adapter and use the charger that came with your original battery brand. Package Includes: 1 x YNDZ 18V Battery Adapter.