Enermall 1Pack 6.0Ah Replacement for Ryobi 40V Battery Lithium Ion and OP401 Charger Compatible with Ryobi 40 Volt Battery OP4026 OP4050A OP4040 OP4030 Replacement for 40V OP401 Charger (Green)

What It Is

This is a 6.0Ah lithium-ion battery replacement for Ryobi 40V cordless lawn mowers, trimmers, blowers, and other outdoor power tools. It’s designed to work with the Ryobi OP401 charger and provides higher capacity than standard 4.0Ah or 5.0Ah packs for longer run times.

Fitment & Compatibility

• Works with: Ryobi 40V tools that accept the standard slide-on battery interface (most models from 2015 onward). Compatible with batteries: OP4026, OP4050A, OP4040, OP4030, and the OP401 charger.
• Does NOT fit: Ryobi 18V, 24V, or 36V tools. Not compatible with older Ryobi 40V models using a different connector (check your tool’s battery slot—if it’s a flat slide-in, it’s likely compatible).
• What to check before buying:
  • Confirm your tool’s model number (e.g., RY40180, RY40190) supports 40V slide-on batteries.
  • Measure battery compartment depth: This pack is slightly taller than OEM 4.0Ah packs due to the larger cells. Ensure it fits under your mower’s battery cover or in your tool’s handle.
  • Verify your charger is the OP401 (round plug with a small rectangular base)—not the OP404A or older OP402.

Key Things to Know

• Quality: Aftermarket battery. Cells are typically lower grade than OEM (Samsung/LG). Expect slightly shorter lifespan (300-500 cycles vs. 500-800 for genuine Ryobi). Some users report voltage sag under heavy load (e.g., thick grass).
• Installation: Simple slide-on, no tools needed. Ensure the locking tab clicks fully.
• Common gotchas:
  • May not charge on non-OP401 chargers (e.g., OP404A).
  • The green color may not match your Ryobi tools exactly.
  • Run time is advertised as 6.0Ah, but actual capacity is often closer to 5.0-5.5Ah in real-world use.
• Warranty: 1-year limited (check seller’s policy; many aftermarket batteries have poor support).

Should You Buy It

Buy if you need a spare battery for light-to-moderate use (small yards, occasional trimming) and want to save 30-40% over OEM. Skip if you rely on your mower for heavy, frequent cuts or need maximum reliability—OEM Ryobi batteries last longer and handle sustained loads better.