Wire Harness Connector Compatible: Perfectly compatible with all Peg-Perego 12-volt ride-on toys, this wire harness connector safely connects to standard 12-volt SLA and lithium battery ride-on toys. Battery Adapter Compatible: Designed for Milwaukee 18V lithium batteries, compatible with models 48-11-1815, 48-11-1850, 48-11-1820, and 48-11-1840. The adapter features a secure fit, allowing for easy installation and removal. More Convenient: Includes a wire harness connector, fuse holder with three 40A fuses, screws, and drywall anchors. All accessories are included to simplify DIY installation and enhance usability for 12V riding toys. (Note: battery not included) Widely Applicable: This battery adapter powers standard 12-volt SLA and lithium battery ride-on toys. Supports a maximum current of 20A with 12AWG wires, enabling a safe upgrade for toy cars without modifying existing circuits. Important Note: This adapter is not a charger. It delivers power directly from the battery. When not in use for extended periods, remove the battery from the adapter.