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

Black+Decker → Ryobi
A comprehensive guide to the Black+Decker to Ryobi cross-brand adapter. Compatible with most 20V MAX high-capacity packs.
Technical Specifications
ConversionBlack+Decker 20V MAX → Ryobi 18V ONE+
Voltage20V DC
Amp Limit20A Continuous
ProtectionOvercurrent, Thermal Fuse (>80°C)
PERFORMANCE LAB
BATTERY CAPACITY
TOOL LOAD350W
50W600W1200W
ESTIMATED RUNTIME
--
-- Wh Usable
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Reverse Adapter
Ryobi 18V One+ To Black+Decker Blower 138 Adapter
Related Adapters
Black+Decker 20V Max To Bosch Blower 395 Adapter Black+Decker 20V Max To Bosch Blower 517 Adapter Black+Decker 20V Max To Bosch Blower 696 Adapter
Frequently Asked Questions
Can I use Black+Decker 20V batteries on Ryobi tools with this adapter?
Yes. This adapter enables Black+Decker 20V MAX batteries to power Ryobi 18V ONE+ tools. It supports up to 20A continuous draw.
What is the maximum power this adapter can handle?
This adapter is rated for 20A continuous at 20V, which equals approximately 400W. 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 Ryobi circular saws draw 6-10A. This adapter supports 20A 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.