BL2120 21V 2.0Ah Replacement Battery for Compatible Makita Platform Tools
The BL2120 is a drop-in replacement battery pack for the MT18V2A, designed for OEMs, hardware distributors, and private-label brands. Built with Nuranu’s in-house mold, it provides OEM-matched latch geometry, rail fit, and charger seating.
Its 18650 5S1P configuration delivers a true rated capacity of 2.0Ah at 21V, while the model-specific BMS supports verified communication with genuine Makita chargers. Standard orders start at 100 units, while private-label or custom-spec runs start at 500 units.
This is a drop-in replacement battery pack for the MT18V2A. The BL2120 is built on a Nuranu proprietary in-house mold for exact OEM latch geometry. It uses 18650 cells in a 5S1P configuration to deliver a true 2.0Ah of rated capacity. It has verified BMS handshake on genuine Makita chargers.
The BL2120 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 Host Tools
- MT18V2A
- Compatible Makita platform tools
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. OEM-Matched Fit
Built on a Nuranu-owned injection mold for exact latch geometry, rail fit, and charger seating — the pack drops into host tools and chargers exactly like the original.
2. 18650 5S1P Architecture
A 5S1P cell string delivers the continuous and pulse current Makita brushless motors demand, holding a stable 21V rail without the voltage sag that degrades tool performance under load.
3. Verified BMS Handshake
The onboard BMS is flashed with model-specific firmware so state-of-charge reporting, authentication, and safety lockouts behave identically to a genuine Makita pack — validated on 100% of units at end-of-line.
Technical Specifications
| Feature | Specification |
|---|---|
| Replacement Model | BL2120 |
| Compatible Brand | Makita (牧田) |
| Nominal Voltage | 21V |
| Rated Capacity (real) | 2.0Ah |
| Cell Type | 18650 · 2000mAh |
| Configuration | 5S1P |
| Shell Color | Black |
| Proprietary Mold | Yes (in-house) |
| Net Weight | 0.33 kg |
| Battery Dimensions | 120*75*50mm |
| Inner Box | 135*82*53mm |
| Master Carton | 443*290*183mm |
| Qty per Carton | 30 pcs |
| Carton Net / Gross | 9.9 kg / 10.8 kg |
Packaging & Wholesale Logistics
The BL2120 is shipped in a box ready for retail, designed for distributors to resell and for international shipping. Each master carton holds 30 units, and the carton dimensions are 443*290*183mm, with a gross weight of 10.8 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 BL2120 replacement battery?
The standard MOQ is 100 units for the BL2120. 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 BL2120 drop-in compatible with original Makita chargers?
Yes. The BL2120 BMS is flashed with firmware designed specifically for this model. This allows it to properly communicate with genuine Makita chargers. The state-of-charge reporting, authentication, and safety lockouts work the same way as the OEM pack. Handshake is validated on 100% of units at the end of the line.
Does the BL2120 use a proprietary mold?
Yes, this SKU is made using Nuranu’s own special injection molding process. This ensures the exact fit and shape of the latches and shells, making it perfect for private-label programs.
What cells and configuration does the BL2120 use?
The BL2120 uses Grade-A 18650 cells (2000mAh each) in a 5S1P configuration for a nominal 21V and a true rated capacity of 2.0Ah. 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 BL2120 packed for shipping?
The BL2120 ships 30 units in a master carton (10.8 kilograms gross). The carton measures 443*290*183 millimeters. 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.