40v 7.5Ah High Capacity Replace for Ryobi 40v Battery OP4075A OP40602 OP40601 OP4060A OP4040 OP4050

What It Is

This is a high-capacity 40V 7.5Ah replacement battery for Ryobi 40V cordless lawn mowers, trimmers, blowers, and other outdoor power tools. It offers longer run time than standard 4.0Ah or 5.0Ah packs, ideal for larger yards or heavy-duty jobs.

Fitment & Compatibility

• Check voltage: Must be a 40V Ryobi tool (not 18V or 36V). Look for the “40V” logo on your tool or existing battery.
• Model numbers: Fits Ryobi models OP4075A, OP40602, OP40601, OP4060A, OP4040, OP4050, and most 40V tools with the standard Ryobi slide-in battery interface.
• OEM vs aftermarket: This is an aftermarket (non-Ryobi) battery. It should physically fit all Ryobi 40V tools with the same slide mount, but compatibility with newer “Whisper Series” or brushless tools is not guaranteed.
• Measurements: Approximately 6.5 x 5 x 4 inches. Ensure your mower battery compartment has clearance for the slightly taller 7.5Ah pack (some older mowers may be tight).
• Check charger: Works with any standard Ryobi 40V charger (model OP40601, OP4075A, etc.). Do not use with 18V chargers.

Key Things to Know

• Run time: Expect 1.5–2x longer run time vs a 4.0Ah battery. Good for 1/3–1/2 acre mowing on a single charge.
• Installation: Slide on and click. No tools required. Ensure the battery is fully seated and clicks into place.
• Quality note: Aftermarket batteries may have slightly lower power output or shorter lifespan than genuine Ryobi. Check for UL or CE certification marks for safety.
• Storage: Store at 40–80°F, partially charged (50–70%) for best longevity. Avoid full discharge.

Should You Buy It

Buy this if you have a Ryobi 40V mower or tool that runs through your standard battery too quickly, and you want an affordable extended-run option. It’s a solid budget pick for light-to-medium use, but if you need maximum reliability or warranty support, stick with an OEM Ryobi battery.