Perfectly compatible with 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. Newly Upgraded Battery Adapter: The new battery adapter uses thicker copper plates and thicker copper core wire (12AWG Wire) and has upgraded soldering technology. The new battery adapter is more conductive, generates less heat, and is more durable than the old battery adapter. Safer: 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 overload. Easier: This version of the adapter also adds a switch module, which is more convenient to use after DIY. Good quality: Made of high-quality plastic, heat-resistant and corrosion-resistant, suitable for various environments. Color: Red. Material: Plastic. Package contents: 1 x Power Wheels Adapter, 4 x Fuse. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.