40 Volt 7500mAh Battery Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Cordless Power Tools & Chargers 2Pack

What It Is

This is an aftermarket 40-volt, 7500mAh lithium-ion battery pack designed to replace Ryobi’s OEM 40V batteries. It powers any Ryobi 40V cordless lawn mower, string trimmer, blower, hedge trimmer, or chainsaw—any tool in the Ryobi 40V lineup that accepts slide-on battery packs.

Fitment & Compatibility

Check your tool’s voltage and connector: This battery is for Ryobi 40V systems only. It will not work with Ryobi 18V or 36V tools. The slide-on interface is identical to Ryobi’s factory 40V batteries (OP4026, OP40601, OP4050A, OP4040, OP4030, OP4050).

Measure your battery compartment: This pack is physically the same size as OEM Ryobi 40V batteries (approx. 5.5” x 4.5” x 3.5”). It fits all Ryobi 40V tools and chargers that accept the standard slide-on pack—including riding mowers, push mowers, and handheld tools.

Charger compatibility: Works with any Ryobi 40V charger (e.g., OP4040, OP40601, OP4030). The charging port and pin layout match OEM spec.

What to verify before buying:

• Confirm your tool is 40V (label on battery or tool).
• Ensure the battery compartment isn’t physically obstructed (e.g., by a mower deck or cover).
• This is an aftermarket (non-OEM) battery—some Ryobi chargers with firmware updates may reject it (rare, but possible).

Key Things to Know

• Capacity vs. runtime: At 7500mAh (75Wh), this pack offers roughly 1.5x the runtime of a standard 4Ah Ryobi 40V battery. Ideal for larger mowers or long trimming sessions.
• Installation difficulty: None. Slide on, click into place, charge with any Ryobi 40V charger.
• Common gotchas:
  • Aftermarket batteries may have slightly shorter lifespan than OEM (fewer charge cycles).
  • Some users report the battery indicator lights are less accurate than OEM.
  • If stored fully discharged, the battery may enter deep-sleep mode and require a “jump start” (place on charger for 30 seconds, then remove and reinsert).
• Warranty: Typically 1-year limited (vs. 3-year OEM). Check seller’s return policy.

Should You Buy It

Buy this if you need a high-capacity battery for extended runtime on a Ryobi 40V mower or trimmer, and you’re comfortable with an aftermarket option that costs roughly half the price of an OEM equivalent. Skip it if you prefer OEM reliability, need a warranty longer than one year, or if your charger has firmware that may reject third-party packs.