1 Pack 10.0Ah Lithium-ion Replacement Batteries Compatible with Ryobi 40V Battery OP4026 OP40601 OP40602 OP4050A OP4050 OP4040 OP4030 OP4015 OP40201 Power Cordless Tools

What It Is

This is a single 10.0Ah lithium-ion replacement battery for Ryobi 40V cordless tools, including mowers, trimmers, blowers, and chainsaws. It’s designed to power your existing Ryobi 40V equipment, not a charger or tool itself.

Fitment & Compatibility

Check your tool’s voltage and platform: This battery works only with Ryobi 40V tools. It will not fit Ryobi 18V or 36V systems. Verify your tool’s model number (e.g., RY40180, RY40250) and ensure it’s labeled 40V.

Model compatibility: It is listed as compatible with Ryobi models OP4026, OP40601, OP40602, OP4050A, OP4050, OP4040, OP4030, OP4015, and OP40201. If your battery pack ends in a similar OP40xx number, it should fit. For tools without OP numbers, check the battery slot shape and terminal layout—this is a slide-on style with a locking tab.

OEM vs aftermarket: This is a third-party battery, not genuine Ryobi. Expect slightly different plastic quality and no Ryobi warranty. The 10.0Ah capacity is higher than most OEM packs (typically 4.0–6.0Ah), so it will be physically larger and may feel heavier in hand.

Measurements: Roughly 5.5 x 4 x 3 inches (same footprint as OEM), but the height is slightly taller. Confirm your tool’s battery compartment has clearance for a taller pack—especially on older mowers with enclosed housings.

Key Things to Know

• Installation: No tools required. Slide the battery onto the tool until it clicks. To remove, press the release button and pull. If it doesn’t latch securely, the locking tab may be slightly off—return it.
• Capacity vs runtime: 10.0Ah provides roughly 2–3x longer run time than a standard 4.0Ah pack. On a 40V mower, expect 45–60 minutes of cutting. On a trimmer, 60–90 minutes.
• Charging: Use any Ryobi 40V charger (e.g., OP40601, OP40602). Full charge time is about 2–3 hours with a standard charger. The battery has no charging indicator lights—only the charger’s LEDs show status.
• Common gotcha: Some users report the battery doesn’t fit snugly in older Ryobi tools (pre-2018). Test fit before relying on it. Also, cold weather (below 40°F) reduces performance—store indoors.

Should You Buy It

Buy this if you need a high-capacity backup battery for your Ryobi 40V mower or trimmer and don’t mind an aftermarket option. It’s a good budget choice for extended runtime, but skip it if you want OEM reliability, warranty support, or a perfect fit with older tools.