HK18MT Adapter: Hitachi/HiKOKI 18V/36V to Makita 18V Tools

HK18MT Battery Adapter – Use Hitachi/HiKOKI 18V & 36V Li-Ion Batteries on Makita 18V Power Tools

Stop buying duplicate battery packs! The HK18MT Battery Adapter lets you plug your existing Hitachi / HiKOKI 18V or 36V Li-Ion batteries directly into any Makita 18V cordless power tool — drills, drivers, saws, and more. Save money, reduce clutter, and get more run-time out of the batteries you already own.

Made in Mainland China.

Key Features

• Dual-Voltage Compatibility: Works with Hitachi/HiKOKI 18V and 36V Li-Ion battery series — simply snap in and go.
• Built-In Protection Circuit Board (PCBA): Integrated electronic protection board guards against over-discharge, short-circuit, and voltage irregularities for safer operation.
• Secure Battery Lock Mechanism: Robust locking design keeps the battery firmly seated during demanding tool use — no wobble, no interruptions.
• Broad Battery Model Support: Compatible with BSL1815X, BSL1830, BSL1840, BSL1850, 330067, 330068, 330139, 330557, and 33055.
• Reliable Mass-Production Quality: Engineered for consistent, repeatable performance across all compatible tool and battery combinations.
• Not for NiCad Batteries: Li-Ion only — does not support nickel-cadmium battery packs.
• Not a Charger: This adapter is for tool use only; it cannot be used to charge batteries.

Compatible Hitachi/HiKOKI Battery Models

BSL1815X · BSL1830 · BSL1840 · BSL1850 · 330067 · 330068 · 330139 · 330557 · 33055

Important Notes Before Purchasing

• Verify your tool's voltage rating and your battery model number before ordering to ensure full compatibility.
• Disconnect the adapter from the battery when not in use for extended periods to prevent over-discharging.
• Please allow ±1–2 mm tolerance due to manual measurement.
• Colors may vary slightly due to lighting and screen calibration differences.

Package Contents

• 1 × HK18MT Battery Adapter
• Battery and power tool are NOT included.

Safety & Standards Reference

For guidance on safe use of power tools and electrical equipment in the workshop, visit the OSHA Power Tools Safety resource.

Frequently Asked Questions

Q: Which Hitachi/HiKOKI batteries are compatible with the HK18MT adapter?

A: The HK18MT adapter is compatible with Hitachi/HiKOKI 18V and 36V Li-Ion battery packs, including models BSL1815X, BSL1830, BSL1840, BSL1850, 330067, 330068, 330139, 330557, and 33055. NiCad (nickel-cadmium) batteries are not supported.

Q: Which Makita tools will work with this battery adapter?

A: The adapter is designed for Makita 18V cordless power tools — drills, impact drivers, circular saws, and other 18V platform tools. Always confirm your specific Makita tool is rated for 18V before use.

Q: Can I use the HK18MT adapter to charge my Hitachi/HiKOKI battery through a Makita charger?

A: No. This adapter is for powering tools only and cannot be used for battery charging. Always charge your Hitachi/HiKOKI battery with its designated charger.

Q: Does the adapter have any built-in safety features?

A: Yes. The HK18MT includes a built-in protection circuit board (PCBA) that helps guard against over-discharge and electrical irregularities, as well as a secure mechanical battery lock to keep the battery stable during operation.

Q: Where is this product made?

A: The HK18MT battery adapter is made in Mainland China.