TANHEYIN 20V to 12V Converter for Dewalt Batteries | 240W DC Regulator with Over-Discharge Protection

Overview

TANHEYIN presents a rugged 20V to 12V step-down converter designed to draw power from Dewalt 20V and 18V DCB-series batteries. It delivers a stable 12V DC output with a maximum current of 20A, equating to up to 240W of regulated power for your 12V accessories and hobby devices. This compact unit is built to fit into hobby setups, workshops, and DIY stations where a reliable 12V source can expand project possibilities.

Designed for broad compatibility, this converter works with a range of Dewalt DCB-series packs (DCB205, DCB204, DCB206, DCB203, DCB201, DCB200 and more). By repurposing existing batteries, users can power 12V components without swapping the entire pack, enabling smoother transitions between tools and toys in everyday projects.

Key benefits

• Stable 12V output at up to 20A supports RC cars, LED lights, and small tools.
• Wide battery compatibility with Dewalt DCB-series packs for flexible power options.
• Compact, heat‑resistant ABS housing designed for hobby workshops and on‑the‑go setups.
• Smart protection with low‑voltage, over‑voltage, over‑current, short‑circuit, overload, and overheat safeguards.
• Clear polarity indication with yellow positive and black negative wiring to help correct connections.
• Low‑voltage auto shut‑off at 15.2V to help prevent unnecessary battery discharge.
• 30A fuse defends against current spikes and protects the circuit and devices.
• Mounting screws are included for quick, secure installation; remove the battery if storing long term.

What you can power

• Power Wheel battery adapters and other RC toy cars for extended play sessions.
• LED work lights, small fans, and portable tools for timely tasks.
• DIY electronics projects and hobby builds that require a reliable 12V supply.
• Other 12V accessories that benefit from a steady, regulated source.

Usage and safety tips

1. Connect the Dewalt battery to the converter with correct polarity.
2. Attach the 12V device to the converter output and ensure a solid connection.
3. Mount the unit using the included screws and keep it cool during operation.

Note: Battery not included. For storage, disconnect the battery to avoid slow discharge. The unit’s heat‑resistant ABS construction supports everyday hobby use and keeps the setup tidy and safe.

With TANHEYIN, you gain a flexible 12V power option from your 20V battery system, expanding what you can run while prioritizing battery longevity and device safety.