7500mAh Lithium 1 Pack Replacement for Ryobi 40 Volt Battery Compatible with Ryobi 40V Battery OP4050A OP40601 OP4040 OP4030 OP4050 OP40261 OP40201 OP40401 Cordless Power Tools with LED Indicator

What It Is

This is a 7500mAh lithium-ion replacement battery for Ryobi 40V cordless tools, including lawn mowers, trimmers, blowers, and chainsaws. It’s designed to power your equipment when the original battery wears out or you need a spare.

Fitment & Compatibility

• Voltage: Must be 40V (Ryobi’s 40V system is standard across all compatible tools).
• Model Numbers: Fits Ryobi models OP4050A, OP40601, OP4040, OP4030, OP4050, OP40261, OP40201, OP40401. Also works with most Ryobi 40V mowers, trimmers, blowers, and chainsaws that accept these batteries.
• Check Before Buying: Verify your tool’s battery port shape and latch mechanism—this is a slide-pack style with a top-mounted release button. Measure the battery compartment dimensions (approx. 6.2 x 3.5 x 3.2 inches) to ensure clearance. This is an aftermarket battery, not OEM Ryobi; it may not fit snugly in all tools or might require slight wiggling.
• What to Avoid: Do not use with 18V or 36V Ryobi tools—voltage mismatch will damage the tool or battery. Not compatible with Ryobi 40V chargers that have a different pin layout (most 40V chargers work, but test first).

Key Things to Know

• Quality & Safety: Aftermarket battery with built-in LED indicator for charge level. Some users report shorter lifespan than OEM (1-2 years vs. 3-4 years under heavy use). Check for UL or CE certification marks to reduce fire risk.
• Installation: No tools needed—slide into the tool’s battery port until it clicks. If it doesn’t lock securely, the latch may be slightly off; return if loose.
• Common Gotchas: May not charge on Ryobi’s fast charger (e.g., OP40601 charger) due to different BMS (battery management system) protocols. Use the standard Ryobi 40V charger. Some tools with tight battery compartments (e.g., older mowers) may require filing the plastic tabs slightly.
• Warranty: Typically 1-year limited warranty from seller. OEM Ryobi batteries have 3-year warranty—factor this into value.

Should You Buy It

Buy this if you need an affordable spare for light-to-moderate use (e.g., trimming, leaf blowing) and don’t mind slightly shorter lifespan than OEM. Skip it if you rely on your mower for large lawns, need guaranteed compatibility with fast chargers, or want the longest warranty and reliability.