Will the Ryobi OP4040A1 40V 4Ah lithium battery work with the Ryobi OP406A 40V rapid charger?
Yes. Both use Ryobi 40V battery platform.
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 40V battery platform.
Good to know
- Not compatible with Ryobi 18V ONE+ tools or batteries.
- The Ryobi 40V page does not state cross-compatibility with other systems; assume 40V packs work only in Ryobi 40V products.
Sources
- Ryobi OP406A 40V rapid charger: specs from Ryobi product page, checked against the source 2026-10-07.
- Ryobi OP4040A1 40V 4Ah lithium battery: specs from Ryobi product page, checked against the source 2026-10-07.
- Ryobi 40V battery platform: Ryobi's 40V batteries power the Ryobi 40V line of mostly outdoor equipment (85+ products). (Ryobi 40V 4Ah battery page).
Check your exact setup
Other parts in the cart, current configuration (installed memory, fan brackets) and adapters can change the answer.
Check a whole cartAI 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-op406a", candidate_id: "ryobi-op4040a1".