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Outdoor Power 40V · 4.0Ah
Ryobi OP4040 40V 4.0Ah
Ryobi 40V Outdoor Power Replacement

Ryobi OP4040 40V 4.0Ah Lithium-Ion Replacement Battery

Drop-in replacement battery for the Ryobi 40V outdoor power equipment platform. The OP4040 delivers a true 4.0Ah from a 10S2P string of 18650 cells, compatible with the Ryobi 40V OP4026 / OP4026A series, with verified BMS handshake on genuine Ryobi 40V chargers. It is an equivalent replacement for the Ryobi OP4026 40V battery on mowers, blowers, and trimmers.

Voltage40V
Capacity4.0Ah
Cell Type18650 cells
Configuration10S2P
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Overview

Drop-in replacement battery for the Ryobi 40V outdoor power equipment platform. The OP4040 delivers a true 4.0Ah from a 10S2P string of 18650 cells, compatible with the Ryobi 40V OP4026 / OP4026A series, with verified BMS handshake on genuine Ryobi 40V chargers. It is an equivalent replacement for the Ryobi OP4026 40V battery on mowers, blowers, and trimmers.

Manufactured by Dongguan Ruineng New Energy (Nuranu) — a high-tech custom battery factory since 2012 — the OP4040 is produced under a fully automated assembly line with 100% aging and end-of-line testing. It is engineered for OEM clients, hardware distributors, and private-label brands that need OEM-equivalent fit and performance at factory-direct pricing.

Ryobi OP4040 40V 4.0Ah view 1Ryobi OP4040 40V 4.0Ah view 2Ryobi OP4040 40V 4.0Ah view 3Ryobi OP4040 40V 4.0Ah view 4

Compatible Host Tools

  • Ryobi 40V mowers, blowers & string trimmers
  • 40V hedge trimmers & cultivators
  • Ryobi 40V OP4026 / OP4026A platform
  • OP4026 / OP4040 / OP4060 compatible equipment

Target Applications

  • Landscaping Equipment: The 4.0Ah OP4040 balances runtime and weight for Ryobi 40V mowers, blowers, and trimmers.
  • Garden Center & Rental Fleets: A versatile mid-capacity 40V pack that covers the broadest slice of the Ryobi 40V installed base.
  • Private-Label Distributors: Sourced with your branding and carton-ready packaging for the Ryobi 40V platform.

Core Technical Advantages

1. Balanced 40V 4.0Ah

A 10S2P string of Grade-A 18650 cells delivers a genuine 4.0Ah at 40V — more runtime than compact packs, lighter than 6.0Ah high-capacity packs.

2. Ryobi 40V OP4026 Compatibility

Matched latch geometry makes the OP4040 a direct replacement for the Ryobi 40V OP4026 / OP4026A series.

3. Verified Charger Handshake

BMS handshakes correctly with genuine Ryobi 40V chargers; behaves identically to the OEM pack.

Product Video

Factory assembly line, BMS testing, and OP4040 demonstration footage. Contact sales for additional product videos.

Technical Specifications

FeatureSpecification
Replacement ModelOP4040
Compatible BrandRyobi (Ryobi 40V)
Nominal Voltage40V
Rated Capacity (real)4.0Ah
Cell Type18650 · 2000mAh
Configuration10S2P
Shell ColorGreen + Black
Proprietary MoldNo (standard form factor)
Net WeightConfirmed at order
Battery DimensionsConfirmed at order
Inner BoxConfirmed at order
Master CartonConfirmed at order
Qty per CartonConfirmed at order
Carton Net / GrossConfirmed at order

Packaging & Wholesale Logistics

The OP4040 ships in carton-ready retail packaging engineered for distributor resale and international freight. Every batch ships with UN38.3 transport test report, IEC 62133 safety certificate, MSDS, and CE Declaration of Conformity for smooth customs clearance in EU, US, UK, AU, and JP markets.

MOQ
100 units (catalog) · 500 units (private label)
Lead Time
25–35 days standard · 18–22 days expedited
Payment
30% T/T deposit + 70% against B/L
Warranty
12 months

Frequently Asked by Distributors

Is the OP4040 a replacement for the Ryobi OP4026 40V battery?
Yes. The OP4040 is an equivalent replacement for the Ryobi OP4026 / OP4026A 40V battery — a direct Ryobi 40V 4Ah battery replacement for 40V mowers, blowers, and trimmers, with OEM-matched fit and verified charger handshake.
What is the MOQ for the OP4040 replacement battery?
Standard MOQ is 100 units for the OP4040. Paid samples of 1–10 units are available for BMS-handshake validation before a production order. Private-label or custom-spec runs start at 500 units.
Is the OP4040 drop-in compatible with original Ryobi chargers?
Yes. The OP4040 BMS is flashed with model-specific firmware so it handshakes correctly with genuine Ryobi chargers — charging, fuel-gauge reporting, and safety lockouts behave identically to the OEM pack. Handshake is validated on 100% of units at end-of-line.
Are these Ryobi replacement batteries any good?
Yes. Our OP4040 uses Grade-A tier-1 cells (Samsung / LG / Panasonic / BAK), capacity- and resistance-matched, with a BMS validated against genuine Ryobi chargers on 100% of units. It is built as a professional-grade Ryobi replacement battery, not a low-cost clone, and is backed by a 12-month warranty.
Will Ryobi or Home Depot replace my battery — and how is your OP4040 different?
Ryobi's own warranty covers genuine packs through Home Depot and Ryobi service channels. We are an independent factory supplying new OP4040 replacement packs — a direct, lower-cost alternative when a pack is out of warranty or you need volume supply, with full UN38.3 / IEC 62133 / CE documentation.
Do you replace the cells in my old Ryobi battery?
We supply complete, ready-to-use OP4040 replacement packs — not a cell-replacement / rebuild service. A new pack with fresh Grade-A cells and a fresh BMS is far more reliable than replacing the cells in an old Ryobi battery, and ships with full safety documentation.
How do I install the OP4040 replacement battery?
It installs exactly like a genuine Ryobi pack — slide it onto the tool or equipment until it latches, and charge it on any genuine Ryobi charger for the matching platform. No adapter or modification needed.
Which Ryobi tools is the OP4040 compatible with?
The OP4040 is a direct replacement across the Ryobi 40V platform, matching the original latch geometry and fitting the corresponding Ryobi 40V tools and equipment.
What cells and configuration does the OP4040 use?
The OP4040 uses Grade-A 18650 cells (2000mAh each) in a 10S2P configuration for a nominal 40V and a true rated capacity of 4.0Ah. Cells are matched by capacity (±20 mAh) and internal resistance (±5 mΩ) before assembly. Preferred cell brand (Samsung / LG / Panasonic / BAK) can be specified at order.
What is the warranty on the OP4040?
All OP4040 replacement packs carry a 12-month warranty against manufacturing defects. Every batch ships with UN38.3 test report, IEC 62133 certificate, MSDS and CE Declaration of Conformity for smooth customs clearance worldwide.

Need a Custom Quote or Technical Details?

Our engineering team is ready to discuss specifications, certification, MOQ, and OEM / private-label customization for the OP4040.

✉ Email Sales 📱 WhatsApp ☎ +86 13823274651

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