Feature:1. Simple design, durable and easy to use2. Product built-in battery lock fixed combination tool battery3. Crafted from high-quality 3D printing materials, long service life4. Great workmanship, perfect replacement for the old one5. This conversion adapter converts for Makita 18V LXT BL1830 / 40 lithium battery to for Worx 20V 4-pin lithium ion battery toolSpecification:Item Type: Battery AdaperApplicable Models: For Worx 20V WG169E, WG549E, WG546E, WG545E.1, WG259E, WG894E, WX523, WX678, WX166, WX372, WX390 wireless toolsReplace for Worx 20V 4-PIN Lithium-ion Battery Pack Model: WA3551.1 / WA3561 / 3563/3564/3567/3864/3553.Package List:1 x Battery Adaper(Adapters only, not including tools and batteries)Note:1. This product is suitable for Worx 20V 4-PIN lithium-ion battery tools.2. Cannot use the for Worx 6-pin battery interface type tool3. Please carefully confirm the type of battery for your tool4. The converter does not support charging power tool batteries