Makita 18V 14.4V Li-ion Battery DIY Adapter BL1830 BL1850 BL1860

Power Your DIY Projects with the Right Connection

This compact DIY battery adapter lets you tap power directly from your Makita 14.4V or 18V Li-ion battery pack. Whether you're wiring a custom tool, building a portable power supply, or integrating battery power into a maker project, this connector gives you a secure, reliable output — all without modifying your battery.

Made in Mainland China.

Compatible Battery Models

• 18V LXT Li-ion: BL1830, BL1830B, BL1840, BL1840B, BL1850, BL1850B, BL1860, BL1860B, BL1845, BL1890, BL1890B, and other LXT Lithium batteries
• 14.4V LXT Li-ion: BL1415, BL1460, BL1440, BL1430, BL1430B, 194559-8, LXT200, and more

⚠️ Not Compatible With

• G-Series batteries: BL1813G (196663-9), BL1413G (196882-7), BL1415G, BL1430G, BL1815G, etc.
• 18V Ni-CD batteries such as 1822 (194465-7)

Key Features

• ✅ Connects directly to Makita 14.4V & 18V LXT Li-ion battery packs
• ✅ Ideal for DIY electronics, maker boards, and custom power projects
• ✅ Compact, lightweight design — easy to integrate into builds
• ✅ No soldering required to the battery itself
• ✅ Stable output connection for consistent power delivery

Important Safety Notes

• When not in use, always disconnect the adapter from the battery to prevent unnecessary drain.
• Do NOT use this adapter to charge your Makita 14.4V or 18V Li-ion battery. It is an output adapter only.
• Battery is not included — adapter only.

Package Contents

• 1 × DIY Battery Output Adapter (battery not included)

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External Resource

For electrical safety best practices when working with DIY battery-powered projects, visit the U.S. Consumer Product Safety Commission (CPSC) Battery Safety Guide.

Frequently Asked Questions

Q: Is this Makita battery adapter compatible with BL1850B and BL1860B batteries?

A: Yes! This DIY connector is compatible with BL1850B, BL1860B, BL1830B, BL1840B, and most other Makita 18V LXT Li-ion battery models. Just make sure it is not a G-Series or Ni-CD battery, as those are not supported.

Q: Can I use this adapter to recharge my Makita battery?

A: No — this is a power output adapter only. It is designed to draw power from your Makita battery for use in DIY and maker projects. Do not connect it to a charger or use it to charge the battery.

Q: What should I do when I'm not using the adapter?

A: Always detach the adapter from the battery when it's not actively in use. Leaving it connected when idle can slowly drain your battery and may shorten its lifespan over time.

Q: Does this adapter come with a battery?

A: No, the battery is not included. You will receive one DIY battery output adapter only. It is designed to work with your existing compatible Makita 14.4V or 18V Li-ion battery pack.