Ryobi OP4040 40V 4.0Ah Lithium-Ion Replacement Battery
- True 4.0Ah capacity from a 10S2P configuration of 18650 cells.
- Compatible with Ryobi 40V OP4026 and OP4026A series equipment.
- Verified BMS handshake on genuine Ryobi 40V chargers.
- Retail-ready packaging and transport documentation support resale and customs clearance in the EU, US, UK, AU, and JP markets.
This is a replacement battery for Ryobi’s 40V outdoor power equipment. The OP4040 delivers a true 4.0Ah from a 10S2P string of 18650 cells. It is compatible with the Ryobi 40V OP4026 and OP4026A series. It has verified BMS handshake on genuine Ryobi 40V chargers. It is a replacement for the Ryobi OP4026 40V battery that is used in mowers, blowers, and trimmers.
The OP4040 is made by Dongguan Ruineng New Energy (Nuranu), a high-tech custom battery factory since 2012. It is made on a fully automated assembly line where each battery is tested at the end of the line. It is designed for original equipment manufacturers (OEM), hardware distributors, and private-label brands that need the same fit and performance as OEM products at factory-direct prices.
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.
Technical Specifications
| Feature | Specification |
|---|---|
| Replacement Model | OP4040 |
| Compatible Brand | Ryobi (Ryobi 40V) |
| Nominal Voltage | 40V |
| Rated Capacity (real) | 4.0Ah |
| Cell Type | 18650 · 2000mAh |
| Configuration | 10S2P |
| Shell Color | Green + Black |
| Proprietary Mold | No (standard form factor) |
| Net Weight | Confirmed at order |
| Battery Dimensions | Confirmed at order |
| Inner Box | Confirmed at order |
| Master Carton | Confirmed at order |
| Qty per Carton | Confirmed at order |
| Carton Net / Gross | Confirmed at order |
Packaging & Wholesale Logistics
The OP4040 is shipped in a box ready for retail, designed for distributors to resell and for shipping internationally. Every batch of products is shipped with UN38.3 transport test reports, IEC 62133 safety certificates, MSDSs, and CE Declaration of Conformity. This helps ensure that customs can easily clear the products in the EU, US, UK, AU, and JP markets.
| Item | Details |
|---|---|
| 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 |
Product Video
Frequently Asked by Distributors:
Is the OP4040 a replacement for the Ryobi OP4026 40V battery?
Yes, the OP4040 is a direct replacement for the Ryobi OP4026 and OP4026A 40V batteries. It is a Ryobi 40V 4Ah battery replacement for 40V mowers, blowers, and trimmers. It has an OEM-matched fit and a verified charger handshake.
What is the MOQ for the OP4040 replacement battery?
The standard MOQ is 100 units for the OP4040. You can get paid samples of 1–10 units to check the BMS-handshake before placing an 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 firmware designed specifically for that model. This allows it to communicate correctly with real Ryobi chargers. The charging, fuel-gauge reporting, and safety lockouts work the same way as the original equipment manufacturer (OEM) pack. Handshake is validated on 100% of units at the end of the line.
Are these Ryobi replacement batteries any good?
Yes. Our OP4040 uses high-quality cells from leading brands like Samsung, LG, Panasonic, and BAK. These cells are matched in capacity and resistance, and their performance is validated by a battery management system (BMS) for 100% of units. It is made as a professional-grade Ryobi replacement battery, not a low-cost copy, 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 if you get them from Home Depot or Ryobi service centers. We are an independent factory that supplies new OP4040 replacement packs. These packs are a direct, lower-cost alternative when a pack is out of warranty or you need a large supply of packs. The packs have 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 — we don’t offer cell replacement or rebuild services. 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. It also comes with full safety documentation.
How do I install the OP4040 replacement battery?
It installs just like a real Ryobi pack. First, slide it onto the tool or equipment until it latches. Then, charge it using any real Ryobi charger that works with that platform. You don’t need to change it or buy an adapter.
Which Ryobi tools is the OP4040 compatible with?
The OP4040 is a direct replacement for the Ryobi 40V platform. It has the same latch geometry as the original and fits the corresponding Ryobi 40V tools and equipment.
What cells and configuration does the OP4040 use?
The OP4040 uses high-quality 18650 cells (2000mAh each) arranged in a 10S2P configuration, providing a nominal 40V and a true rated capacity of 4.0Ah. Before assembly, cells are matched based on their capacity (±20 mAh) and internal resistance (±5 mΩ). You can specify your preferred cell brand (Samsung, LG, Panasonic, or BAK) when you place your order.
What is the warranty on the OP4040?
All OP4040 replacement packs come with a 12-month warranty that covers manufacturing defects. Every batch of products is shipped with the following documents:
– UN38.3 test report
– IEC 62133 certificate
– MSDS
– CE Declaration of Conformity
These documents are needed to clear customs worldwide.