Upgraded to 7500mAh Replacement for Ryobi 40V Battery and Charger Combo Kit Compatible with Ryobi 40 Volt Lithium ion Battery OP4075A OP40601 OP40602 OP4040 OP40404 and OP401 Charger(Green)

What It Is

This is a high-capacity 7500mAh replacement battery for the Ryobi 40V platform, designed to power any Ryobi 40V cordless lawn mower, trimmer, blower, or chainsaw. It’s an aftermarket upgrade over the standard 4.0Ah or 5.0Ah OEM packs, offering longer runtime per charge.

Fitment & Compatibility

• Works with: Ryobi 40V tools and chargers using the standard Ryobi 40V slide-in battery interface. Compatible models include OP4075A, OP40601, OP40602, OP4040, OP40404, and OP401 charger.
• Does NOT fit: Ryobi 18V or 36V systems, or older Ryobi 40V batteries with a different latch design (check your tool’s battery slot shape).
• Check before buying: Measure your existing battery’s slot depth and latch tab position. This battery is slightly taller than OEM 4.0Ah packs—ensure your mower’s battery compartment has enough clearance (approx. 1.5 inches extra height). Also verify your charger is a Ryobi 40V model (not a universal or third-party charger).

Key Things to Know

• Quality: Aftermarket, not OEM. Build quality is generally good, but some users report slightly looser fit in the battery slot compared to genuine Ryobi packs. Expect 30-50% longer runtime than a standard 4.0Ah battery.
• Installation: No tools required—slide onto tool, press down until latch clicks. Charging time is longer (up to 3-4 hours) due to higher capacity; use a compatible 40V charger.
• Common gotchas: Battery charge indicator may be inaccurate on some tools. Avoid fully draining it—lithium-ion batteries last longer if recharged before empty. Not compatible with Ryobi’s “Link” or “Expand-It” attachments.
• Warranty: Typically 1-year limited from seller; no Ryobi factory warranty.

Should You Buy It

Buy this if you need extended runtime for large lawns or heavy trimming and are comfortable with aftermarket quality. Skip it if you prefer OEM reliability, need a perfect fit in tight compartments, or want fast charging—go with a genuine Ryobi 6.0Ah pack instead.