Upgraded 2Pack 40V 6.0Ah Battery and OP401 Charger Combo Replacement for Ryobi Compatible with Ryobi 40 Volt Power Tools

What It Is

This is an aftermarket combo replacement for Ryobi’s 40V battery system—two 6.0Ah lithium-ion batteries and one OP401 charger. Designed for any Ryobi 40V lawn mower, string trimmer, blower, or other outdoor power tool that uses the slide-on 40V battery platform.

Fitment & Compatibility

• Works with: All Ryobi 40V tools that accept the standard slide-on battery (most Ryobi 40V mowers, trimmers, chainsaws, blowers, etc.).
• Does NOT fit: Ryobi 18V or 36V tools, or any tool that uses a different battery mount style (e.g., old plug-in packs).
• Check before buying:
  • Verify your tool’s voltage (must be 40V) and battery port shape (slide-in, not push-in).
  • Confirm your existing charger is an OP401 or compatible—this charger works with all Ryobi 40V packs, but will not charge 18V batteries.
  • Measure battery compartment if using on a mower: these 6.0Ah packs are slightly taller than 4.0Ah originals; ensure clearance under the battery cover.
• OEM vs aftermarket: This is a third-party replacement, not made by Ryobi. It may lack some safety certifications (e.g., UL) and won’t carry a Ryobi warranty.

Key Things to Know

• Quality & performance: Users report good runtime (about 50% more than a standard 4.0Ah pack), but some note slightly shorter lifespan than OEM after heavy use.
• Installation: Zero difficulty—slide on, slide off. No tools or modifications needed.
• Common gotchas:
  • The charger may have a slower charge rate than Ryobi’s rapid charger (expect 2–3 hours per full pack).
  • Aftermarket batteries can sometimes trigger the tool’s low-voltage cutoff earlier than OEM packs—if your tool shuts down prematurely, the battery may be the cause.
  • Do not mix these with OEM Ryobi batteries in the same tool or charger; mixing can cause uneven charge/discharge cycles.

Should You Buy It

If you need a budget-friendly way to double your runtime on Ryobi 40V tools and don’t mind slightly slower charging and a shorter overall battery lifespan, this combo is a solid value. It’s not for heavy commercial use or if you require OEM reliability/warranty—stick with genuine Ryobi for that. For weekend lawn care and light trimming, it’s a practical upgrade.