Perfectly compatible for 18v battery series: such as 48-11-1851, 48-11-1837, 48-11-1880, 48-11-1828, 48-11-1812, 48-11-1811, 48-11-1822, 48-11-1850, 48-11-1852, 48-11-1865, 48-11-1860, 48-11-1862, 48-11-1890, 48-11-1835, 48-11-1840, 48- 11-1820, 48-11-1815, etc.New Upgraded Battery Adapter: The new battery adapter uses thicker copper sheets and thicker copper core wire (12AWG Wire) and has upgraded soldering technology. The new battery adapter is more , generates less heat, and is more durable than the battery adapter: The new version 2.1 of the adapter adds a safety module, which can effectively prevent the device from burning down due to DIY errors or overloadingSimpler: This version of the adapter also adds a switch module, which is more convenient to use after DIYGood quality: Made of high-quality plastic, heat-resistant and corrosion-resistant, suitable for environmentscolor:RedMaterial:plasticPackage Contents:1 wheels adapter4 x fuseOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.