18V/20V to 12V Step-Down Adapter – Makita Milwaukee Bosch
18V/20V to 12V Step-Down Adapter – Makita Milwaukee Bosch
18V/20V to 12V Step-Down Power Adapter — For Makita, Milwaukee, Bosch, Ryobi & Craftsman Batteries
Unlock the full potential of your cordless tool batteries! This high-efficiency step-down converter lets you repurpose your existing 18V/20V lithium battery packs as a reliable 12V DC power source — perfect for powering RC toy cars, automotive accessories, and a wide range of 12V devices. No extra wiring, no complicated setup — just plug in and go.
Made in Mainland China.
Key Specifications
- Input Voltage: DC 18V–20V
- Output Voltage: DC 12V (adjustable range DC 5V–13V)
- Max Output Current: 10A
- Conversion Efficiency: ≥ 95%
- CE Certified
- Housing Material: Fireproof PC+ABS
- Wire Gauge: 16 AWG
- Output Interface: Standard 12V cigarette lighter socket
Wide Battery Compatibility
✅ Milwaukee 18V Batteries
Compatible with Milwaukee 18V lithium packs including: 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.
✅ Makita 18V Batteries
Compatible with Makita 18V lithium-ion packs including: BL1820, BL1840B, BL1820B, BL1815B, BL1835, LXT-400, BL1845B, BL1845, 194205-3, 194204-5, BL1830B, BL1850B, BL1860, and more.
✅ Bosch 18V GPA Batteries
Compatible with Bosch 18V GPA lithium packs including: BAT607, BAT614, BAT607G, BAT614G, BAT622, BAT609, BAT618G, BAT609G, BAT618, and more.
✅ Ryobi 18V Batteries
Compatible with Ryobi 18V lithium batteries including: P102, P103, P104, P105, P107, P108, P109, P190, P122, and more.
✅ Craftsman V20 20V MAX Batteries
Compatible with Craftsman V20 lithium packs including: CMCB202, CMCB201, CMCB204, CMCB204-2, CMCB202-2, CMCB204-OPE, CMCB209, and more.
Top Features
- Standard 12V Cigarette Lighter Output: Instantly powers car appliances, RC vehicles, air compressors, and more — no special adapters needed.
- Multi-Layer Protection: Built-in over-current, short-circuit, over-load, no-load auto power-off, and low-voltage protection for safe, uninterrupted operation.
- ≥ 95% Efficiency: Advanced step-down circuitry minimizes energy loss and heat build-up, maximizing your battery's run time.
- Efficient Cooling Design: Internal cooling mechanisms keep the adapter running reliably even under sustained loads.
- Fireproof PC+ABS Shell: Rugged construction built to withstand regular use and demanding environments.
- Tool-Free Install: Snug-fit battery connector slides on and off with ease — no tools, no wiring, no hassle.
What's in the Box
- 1 × 18V/20V to 12V Step-Down Converter Adapter (battery not included)
For more information on electrical safety standards for power conversion accessories, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: Which battery brands are compatible with this 18V/20V to 12V step-down adapter?
A: This step-down converter is compatible with Milwaukee 18V, Makita 18V, Bosch 18V GPA, Ryobi 18V, and Craftsman V20 20V MAX lithium battery packs. Please refer to the specific model numbers listed above to confirm your battery is supported.
Q: What devices can I power with this 12V step-down converter?
A: The adapter outputs a standard 12V DC cigarette lighter socket, so you can power RC toy cars, portable air compressors, car vacuums, LED light bars, car fans, tire inflators, and many other 12V automotive accessories — up to 10A max output.
Q: Is this step-down adapter safe to use with my power tool battery?
A: Yes. The adapter features multi-layer protection including over-current, short-circuit, over-load, no-load auto shut-off, and low-voltage protection. Its fireproof PC+ABS housing and 16 AWG wiring are engineered for safe, reliable operation across a variety of conditions.
Q: Does the output voltage adjust, or is it fixed at 12V?
A: The adapter is designed to deliver a stable 12V DC output from an 18V–20V lithium battery input. The output range is DC 5V–13V adjustable, giving you flexibility for different device requirements while maintaining a primary 12V operating voltage.