Fangrui Product Details Description: Built-in Battery Lock Fixed Combination Power , Non-slip Design. For A Long Time Do Not Use, Please Separate From The Battery. Can Not Be Used For Power Charging, This Adapter Not Fit Into Any Chargers. If You Need To Charge Your Power Tool Batteries, Please Use The Battery Chargers. Product Model For To 6pin Converter Bottom Applicable To For Battery Model Lithium-ion 18v Battery: Bl1815, Bl1815b, Bl1820, Bl1820b, Bl1830, Bl1830b, Bl1840, Bl1840b, Bl1850, Bl1850b, Bl1860, Bl1860b, Bl1845, Bl1890, Bl1890b Converter Top Convert To Battery Model: Lithium-ion 20v Battery: 20v Wa3520 Wa3525 Wa3575 Wa3578 Functional Features: For 18v Lithium Battery Is Converted To 20v (6pin) Lithium Battery Tools. This Converter Can Be Used On 20v (6pin) Lithium Battery Tools. For 18v Lithium Battery Allows Your For 18v Lithium Battery To Share The Battery With 20v (6pin) Lithium Battery Tools. This Converter Does Not Support Charging For 18v Lithium Battery Through The Converter! Note: A. This Product Is Onl