18V–20V to 12V Step-Down Converter | Makita Milwaukee Bosch

$74.06 USD $92.89 USD

Color For Bosch For Craftsman For Makita For Milwaukee

Adjustable Voltage Regulator Power Adapter — 18V/20V to 12V Step-Down Converter

Power your car appliances, camping gear, and outdoor devices using the same lithium-ion batteries you already own. This compact step-down converter transforms the output of your Milwaukee, Makita, Bosch, or Craftsman 18V/20V battery into a stable 12V DC supply — delivered through a convenient cigarette lighter interface. No complicated wiring, no extra installation steps — just plug, connect, and go.

Made in Mainland China.

⚡ Key Specifications

Input Voltage: DC 18V – 20V
Output Voltage: DC 12V (adjustable DC 5V – 13V)
Output Current: 10A Max
Efficiency: ≥ 95%
Interface: Standard cigarette lighter socket
Wire Gauge: 16 AWG
Housing Material: Fireproof PC + ABS
Certification: CE
Battery Included: No

🔋 Wide Battery Compatibility

For Milwaukee 18V Batteries

Compatible with: 48-11-1820, 48-11-1828, 48-11-1835, 48-11-1840, 48-11-1850, 48-11-1852, 48-11-1860, 48-11-1862, 48-11-1865, 48-11-1880, and more.

For Makita 18V Li-Ion Batteries

Compatible with: BL1820, BL1840B, BL1820B, BL1815B, BL1835, LXT-400, BL1845B, BL1845, 194205-3, 194204-5, BL1830B, BL1850B, BL1860, and more.

For Bosch 18V GPA Batteries

Compatible with: BAT607, BAT614, BAT607G, BAT614G, BAT622, BAT609, BAT618G, BAT609G, BAT618, and more.

For Craftsman V20 20V MAX Batteries

Compatible with: CMCB202, CMCB201, CMCB204, CMCB204-2, CMCB202-2, CMCB204-OPE, CMCB209, and more.

🛡️ Built-In Safety Features

Over-Current Protection — guards against excessive draw
Short-Circuit Protection — shuts down automatically on fault detection
Efficient Cooling Mechanism — maintains safe operating temperature during extended use
Fireproof PC+ABS Housing — flame-resistant casing for added safety

🔌 Cigarette Lighter Interface — Plug & Power

The standard cigarette lighter output socket means you can instantly connect any compatible 12V car accessory — tire inflators, portable fans, LED lighting strips, cooler boxes, GPS units, and more — without any modifications or adapters.

🔧 Durable Construction

Built with 16 AWG wiring and a robust fireproof PC+ABS shell, this converter is engineered to handle regular heavy-duty use and challenging outdoor environments. Whether you're on a jobsite or on the road, it delivers consistent, reliable power conversion every time.

📦 Package Contents

1 × 18V/20V to 12V Step-Down Converter
Battery not included

Frequently Asked Questions

Q: Does this step-down converter work with DeWalt 18V batteries?

A: This converter is specifically designed for Milwaukee, Makita, Bosch, and Craftsman 18V/20V battery platforms. While these are the confirmed compatible brands, DeWalt batteries use a different connector and are not listed as compatible. Please check your battery model against the compatibility list before purchasing.

Q: Can I use this converter to power car accessories while off-grid or camping?

A: Absolutely! This 18V to 12V step-down converter is ideal for outdoor and off-grid use. Simply attach your compatible 18V/20V lithium battery and use the cigarette lighter interface to run 12V car appliances like tire inflators, LED lights, portable fans, and cooler boxes wherever you are.

Q: Is the output voltage truly adjustable?

A: Yes. While the default output is DC 12V, the converter supports an adjustable output range of DC 5V to 13V, giving you flexibility to match the voltage requirements of different devices.

Q: Does the converter include over-current and short-circuit protection?

A: Yes. This unit is equipped with both over-current protection and short-circuit protection, ensuring a safe and stable power supply to all connected devices. The fireproof PC+ABS housing adds an additional layer of safety.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.