7500mAh 2 Packs OP4075A Battery Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Batteries OP40601 OP40602 OP4050 OP40501 OP4040 OP40404(Green)

What It Is

This is an aftermarket 40V lithium-ion battery pack (7500mAh, 2-pack) designed to power Ryobi 40V cordless lawn mowers, string trimmers, blowers, chainsaws, and other outdoor tools that use the Ryobi 40V platform. It replaces several OEM Ryobi models to keep your equipment running without buying a new tool.

Fitment & Compatibility

Before buying, verify your Ryobi tool uses a 40V battery (not 18V or 36V). This pack is compatible with Ryobi models OP40601, OP40602, OP4050, OP40501, OP4040, and OP40404. It fits all Ryobi 40V tools that accept those batteries, including mowers like the RY48110, RY48140, and RY48150. Check your tool’s battery port—it must have the same slide-in design and terminal layout. This is an aftermarket part, not OEM Ryobi, so it may have slight physical differences (e.g., tab alignment, fitment tightness) in some tools. Measure your existing battery’s dimensions (approx. 5.7 x 4.1 x 3.5 inches) to confirm it matches. Avoid using in tools that require a sealed, waterproof battery (e.g., some zero-turn mowers).

Key Things to Know

• Capacity vs runtime: 7500mAh is higher than most OEM Ryobi 40V batteries (usually 4000-6000mAh), so expect longer runtime per charge—up to 50-60% more on a mower.
• Installation: Drops into any compatible tool in seconds—no tools or wiring needed. Just slide in until it clicks.
• Charging: Use your existing Ryobi 40V charger (OP4060 or OP4080). The pack may take slightly longer to charge due to higher capacity.
• Quality note: Aftermarket batteries may have lower cell quality or shorter lifespan than OEM. Some users report inconsistent performance after 6-12 months of heavy use.

Should You Buy It

Buy this if you need extra runtime for your Ryobi 40V tools and want a budget-friendly 2-pack (much cheaper than buying two OEM batteries). It’s a good fit for homeowners with a single mower or trimmer who don’t need factory warranty coverage. Skip it if you rely on your tool daily for commercial work, or if you want guaranteed compatibility and longer battery life—stick with genuine Ryobi.