Compatibility answer

Will the Ryobi PBP004 18V ONE+ 4Ah lithium high performance battery work with the Ryobi PCL500B 18V ONE+ 5-1/2 in. circular saw (tool only)?

Yes. Both use Ryobi 18V ONE+ battery platform (incl. HP, EDGE).

Both records are reviewed against the manufacturers' sources; sources last checked 2026-10-14. Informational only: confirm with the manufacturer before buying.

Why

  • ✓ Both use Ryobi 18V ONE+ battery platform (incl. HP, EDGE).

Good to know

  • HP batteries and tools are part of ONE+; HP batteries communicate with HP brushless tools for more performance, but standard ONE+ batteries still fit HP tools.
  • Not compatible with Ryobi 40V tools or batteries.
  • Ridgid 18V is a separate system (both brands are made by TTI); the batteries are not interchangeable.
  • Some older tool-only models (e.g., PSBDD01B) are now listed as discontinued.

Sources

Check your exact setup

Other parts in the cart, current configuration (installed memory, fan brackets) and adapters can change the answer.

Check a whole cart

Also checked with the Ryobi PCL500B 18V ONE+ 5-1/2 in. circular saw (tool only)

Everything checked with it

AI assistants and developers: the same answer, with a signed receipt, from check_compatibility at https://tetheredtrust.com/mcp or POST https://tetheredtrust.com/v1/check with existing_id: "ryobi-pcl500b", candidate_id: "ryobi-pbp004".