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

Ryobi → Black+Decker
A comprehensive guide to the Ryobi to Black+Decker cross-brand adapter. Compatible with most 18V ONE+ high-capacity packs.
Technical Specifications
ConversionRyobi 18V ONE+ → Black+Decker 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
Black+Decker 20V Max To Ryobi Blower 367 Adapter
Related Adapters
Ryobi 18V One+ To Black+Decker Blower 138 Adapter Ryobi 18V One+ To Black+Decker Blower 152 Adapter Ryobi 18V One+ To Black+Decker Blower 253 Adapter
Frequently Asked Questions
Can I use Ryobi 18V batteries on Black+Decker tools with this adapter?
Yes. This adapter enables Ryobi 18V ONE+ batteries to power Black+Decker 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 Black+Decker 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.