Ryobi 18V ONE+ 4.0Ah Lithium-Ion Battery. ✔ FitsALL Ryobi 18V ONE+ tools. ✔ Compatible with Ryobi Li-Ion & Ni-Cad 18V batteries. ✔ Genuine Ryobi product. ✅ Genuine Ryobi quality. ✔ 18V ONE+ system compatibility.
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