7500mAh Replacement for Ryobi 40 Volt Battery Lithium ion Compatible with Ryobi 40V Battery 7.5Ah OP4075A OP40602 OP40401 OP4026 OP40261 OP4050 OP40601 OP4030 Power Cordless Tools 2 Pack (Green)

What It Is

This is a high-capacity 7.5Ah (7500mAh) lithium-ion battery pack compatible with all Ryobi 40V cordless outdoor power tools—lawn mowers, string trimmers, blowers, chainsaws, and hedge trimmers. It’s a replacement or spare for OEM Ryobi 40V batteries, offering longer runtime than standard 4.0Ah or 5.0Ah packs.

Fitment & Compatibility

• Works with all Ryobi 40V tools (OP4075A, OP40602, OP40401, OP4026, OP40261, OP4050, OP40601, OP4030, and any other 40V platform tool). No adapter needed.
• Not compatible with Ryobi 18V One+ or 36V/80V tools—physical connector is different.
• Aftermarket (not OEM) – uses generic cells; will physically snap into the tool and charge on any Ryobi 40V charger.
• Check your mower’s battery compartment – some older Ryobi mowers (e.g., early RY40100) have a tight fit; measure the battery dimensions (approx. 5.5 x 3.1 x 4.3 inches) to confirm clearance.
• Only works with Ryobi 40V chargers – will not charge on third-party or generic chargers.

Key Things to Know

• Runtime vs OEM – Expect roughly 30–40% more run time than a standard 4.0Ah OEM pack. Real-world mowing: 45–60 minutes on a 21” push mower (medium grass).
• Build quality – Plastic shell feels slightly less rigid than OEM. Some users report early cell failure after 1–2 seasons. Not waterproof—store indoors.
• Installation – Slide on/off same as OEM battery. No tools required. Charging time: ~2–3 hours on standard Ryobi charger.
• Common gotcha – The 2-pack price is attractive, but if one battery fails, you’re stuck with a dead unit. No individual warranty replacement. Check seller’s return policy.

Should You Buy It

Good for budget-conscious owners who need extended runtime for large yards (1/2 acre+) and don’t want to pay OEM prices. Avoid if you rely on daily heavy use or need guaranteed reliability—OEM batteries last longer and have better warranty support.