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Ryobi 18V ONE+ Battery Adapter for DeWalt 20V MAX Cordless Tools

Ryobi → DeWalt
A comprehensive guide to the Ryobi to DeWalt cross-brand adapter. Compatible with most 18V ONE+ high-capacity packs.
Technical Specifications
ConversionRyobi 18V ONE+ → DeWalt 20V MAX
Voltage18V DC
Amp Limit15A Continuous
ProtectionOvercurrent, Thermal Fuse (>80°C)
PERFORMANCE LAB
BATTERY CAPACITY
TOOL LOAD350W
50W600W1200W
ESTIMATED RUNTIME
--
-- Wh Usable
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Reverse Adapter
Dewalt 20V Max To Ryobi 18V One Adapter
Related Adapters
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Frequently Asked Questions
Can I use Ryobi 18V batteries on DeWalt tools with this adapter?
Yes. This adapter enables Ryobi 18V ONE+ batteries to power DeWalt 20V MAX tools. It supports up to 15A continuous draw.
What is the maximum power this adapter can handle?
This adapter is rated for 15A continuous at 18V, which equals approximately 270W. It includes overcurrent protection and a thermal fuse that triggers above 80°C.
Is this adapter safe for high-drain tools like circular saws or grinders?
It depends on the tool's amp draw. Most DeWalt circular saws draw 6-10A. This adapter supports 15A continuous, so verify your tool's specifications before use.
Safety Disclaimer Verify voltage matching before use. Never use a high-voltage battery on a low-voltage tool (e.g. 20V battery on 12V tool) even if it physically fits. Disconnect adapter immediately if tool overheats. Not responsible for misuse.