Makita 40V XGT BL4040 Replacement Battery Pack
The Nuranu BL4040 is a drop-in replacement battery pack for the Makita 40V XGT cordless platform. Built with a proprietary in-house mold, it provides exact OEM latch geometry, rail fit, and charger seating. Its 10S1P high-drain 21700 cell configuration delivers a true rated 3.0Ah capacity for XGT drills, grinders, saws, and outdoor power equipment.
The BMS is validated on genuine Makita XGT chargers at end-of-line testing. Available from 100 units for catalog orders and 500 units for private-label programs.
This is a drop-in replacement battery pack for the Makita 40V XGT cordless platform. The BL4040 is built on a Nuranu proprietary in-house mold for exact OEM latch geometry. It uses high-drain 21700 cells in a 10S1P configuration to deliver a true 3.0Ah of rated capacity. It has verified BMS handshake on genuine Makita XGT chargers.
The BL4040 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 every 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 Dyson Models
- Makita 40V XGT cordless drills & drivers
- XGT angle grinders & rotary hammers
- XGT circular & reciprocating saws
- XGT outdoor power equipment (blowers, trimmers)
Target Applications
- Industrial Tool Fleets: High-drain 21700 cells sustain peak current for professional XGT drills, grinders, and rotary hammers under continuous-duty jobsite use.
- Outdoor Power Equipment: Stable 40V rail for XGT-platform blowers, hedge trimmers, and chainsaws used by landscaping and grounds-maintenance crews.
- Rental & Service Fleets: Proprietary-mold shell and OEM-matched latch make this an ideal private-label or fleet-replacement pack with identical fit and charger behaviour.
Core Technical Advantages
1. Proprietary In-House Mold
The BL4040 shell is produced on a Nuranu-owned injection mold, giving exact OEM latch geometry, rail fit, and charger seating — critical for private-label programs where appearance and fit must match the original XGT pack.
2. High-Drain 21700 Architecture
A 10S1P string of 21700 cells delivers the high continuous and pulse current that 40V XGT brushless motors demand, without the voltage sag that degrades tool performance under load.
3. Verified BMS Handshake
The onboard BMS is flashed with XGT-specific firmware so state-of-charge reporting, authentication, and safety lockouts behave identically to a genuine Makita pack on OEM chargers — validated on 100% of units at end-of-line.
Technical Specifications
| Feature | Specification |
|---|---|
| Replacement Model | BL4040 |
| Compatible Brand | Makita (牧田) |
| Nominal Voltage | 40V |
| Rated Capacity (real) | 3.0Ah |
| Cell Type | 21700 · 3000mAh |
| Configuration | 10S1P |
| Shell Color | Black + Green |
| Proprietary Mold | Yes (in-house) |
| Net Weight | 0.89 kg |
| Battery Dimensions | Confirmed at order |
| Inner Box | 155*86*78mm |
| Master Carton | 460*327*175mm |
| Qty per Carton | 20 pcs |
| Carton Net / Gross | 17.8 kg / 18.4 kg |
Packaging & Wholesale Logistics
The BL4040 is shipped in a box ready for retail, designed for distributors to resell and for international shipping. Each master carton holds 20 units, and the carton dimensions are 460*327*175mm, with a gross weight of 18.4 kg. Every batch ships with UN38.3 transport test report, IEC 62133 safety certificate, MSDS, and CE Declaration of Conformity so you can get through customs easily 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:
What is the MOQ for the BL4040 replacement battery?
The standard MOQ is 100 units for the BL4040. 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 BL4040 drop-in compatible with original Makita chargers?
Yeah, the BL4040 BMS is flashed with model-specific firmware so it works right with real Makita chargers. It’s got all the features, like reporting the charge, making sure it’s legit, and locking it out when needed. It’s basically the same as the OEM pack. We make sure to validate handshakes on 100% of units at the end of the line.
Does the BL4040 use a proprietary mold?
Yeah, this SKU is made using a Nuranu proprietary in-house injection mold. This gives you exact OEM latch geometry and shell fit, which is great for private-label programs.
What cells and configuration does the BL4040 use?
The BL4040 uses Grade-A 21700 cells (3000mAh each) in a 10S1P configuration for a nominal 40V and a true rated capacity of 3.0Ah. 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.
How is the BL4040 packed for shipping?
The BL4040 is shipped in master cartons of 20 pieces (18.4 kg gross). The carton dimensions are 460*327*175 mm. 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.