Dayi A3 & 18V Cordless Power Tool Battery Adapter Converter

Breathe new life into your cordless power tool setup with this plug-and-play Battery Adapter Converter. Designed for seamless compatibility between Dayi A3 batteries and standard 18V cordless power tools — and vice versa — this compact adapter eliminates costly battery replacements and keeps your workflow uninterrupted. Made in Mainland China.

Key Features

Dual-Mode Compatibility: Available in two configurations — Model A: use a standard 18V battery (BL1850, BL1860B, BL1855, BL1840, BL1830, BL1820B, BL1815 and other compatible batteries) in a Dayi power tool; Model B: use a Dayi battery in a standard 18V power tool.
Wide Battery Support: Compatible with BL1850, BL1860B, BL1855, BL1840, BL1830, BL1820B, BL1815, and other compatible 18V Li-ion battery series.
Durable ABS & PC Construction: Built from tough ABS and polycarbonate (PC) plastic for long-lasting resilience under demanding workshop and job-site conditions.
Compact & Lightweight: Small form factor makes it easy to toss in your toolbox or carry bag — always ready when you need it.
True Plug-and-Play: No additional tools, wiring, or complicated setup required. Simply connect and get to work.
Reliable Power Delivery: Maintains consistent power output for stable, efficient operation of your cordless tools.
Color: Black
Material: ABS + PC Plastic

Specifications

Part Name	Cordless Power Tool Battery Adapter Converter
Material	ABS and PC Plastic
Color	Black
Model A	18V battery → Dayi power tool
Model B	Dayi battery → 18V power tool
Country of Origin	Made in Mainland China

Package Contents

1 × Power Tool Battery Adapter Converter

Notes

Actual color may vary slightly from images due to monitor brightness and lighting conditions.
Please allow minor measurement deviations due to manual measurement.

Related Products You May Like

For general power tool and electrical safety guidelines, visit the U.S. Consumer Product Safety Commission (CPSC) for best practices when working with cordless power tools and batteries.

Learn more: Anker

Frequently Asked Questions

Q: What is the difference between Model A and Model B of this battery adapter converter?

A: Model A allows you to use a standard 18V Li-ion battery (such as BL1850, BL1860B, and compatible series) in a Dayi A3 cordless power tool. Model B does the reverse — it lets you use a Dayi A3 battery in a standard 18V cordless power tool. Choose the model that matches your setup.

Q: Is this adapter compatible with all BL-series 18V batteries?

A: Yes — this adapter is designed to work with BL1850, BL1860B, BL1855, BL1840, BL1830, BL1820B, BL1815, and other compatible 18V Li-ion batteries. Always verify your specific battery terminal layout before use.

Q: Does this adapter require any tools or modifications to install?

A: No. This is a true plug-and-play battery adapter converter. Simply slide it into place as you would a standard battery — no extra tools, wiring, or modifications needed.

Q: What material is the adapter made from, and how durable is it?

A: The adapter is constructed from ABS and polycarbonate (PC) plastic, both of which are known for their toughness and impact resistance, making this converter well-suited for regular use in workshop and job-site environments.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.