Makita BL1852 18V 5.2Ah Replacement Battery Pack
The BL1852 is a drop-in replacement battery pack for MTBL1852, built in a standard form factor matched to OEM latch geometry. Using 18650 cells in a 5S2P configuration, it delivers a true rated capacity of 5.2Ah and nominal 18V output for compatible Makita platform tools. The model-specific BMS firmware is verified for handshake behavior on genuine Makita chargers, including state-of-charge reporting, authentication, and safety lockouts.
Designed for OEM clients, distributors, rental fleets, and private-label brands, the pack is supplied with UN38.3, IEC 62133, MSDS, and CE documentation.
This is a drop-in replacement battery pack for the MTBL1852. The BL1852 is built on a standard form factor that has been shown to work well. It uses 18650 cells in a 5S2P configuration to deliver a true 5.2Ah of rated capacity. It also has a verified BMS handshake on genuine Makita chargers.
The BL1852 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
- MTBL1852
- Compatible Makita platform tools
Target Applications
- Industrial Tool Fleets: Sustains peak current for professional Makita cordless tools under continuous-duty jobsite use, delivering the full 5.2Ah rated capacity.
- Rental & Service Fleets: OEM-matched latch and precise form factor make this an ideal fleet-replacement or private-label pack with identical fit and charger behaviour.
- Distributor Stock Programs: Carton-ready packaging and full UN38.3 / IEC 62133 documentation make this SKU ready for wholesale resale and customs clearance worldwide.
Core Technical Advantages
1. OEM-Matched Fit
Precision form factor delivering exact latch geometry, rail fit, and charger seating — the pack drops into host tools and chargers exactly like the original.
2. 18650 5S2P Architecture
A 5S2P cell string delivers the continuous and pulse current Makita brushless motors demand, holding a stable 18V 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 | BL1852 |
| Compatible Brand | Makita (牧田) |
| Nominal Voltage | 18V |
| Rated Capacity (real) | 5.2Ah |
| Cell Type | 18650 · 5200mAh |
| Configuration | 5S2P |
| Shell Color | Black |
| Proprietary Mold | No (standard form factor) |
| Net Weight | Confirmed at order |
| Battery Dimensions | 120*75*70mm |
| Inner Box | 135*82*74mm |
| Master Carton | 443*290*170mm |
| Qty per Carton | 20 pcs |
| Carton Net / Gross | 7.4 kg / 8.1 kg |
Packaging & Wholesale Logistics
The BL1852 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 443*290*170mm, with a gross weight of 8.1 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 BL1852 replacement battery?
The standard MOQ for the BL1852 is 100 units. 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 BL1852 drop-in compatible with original Makita chargers?
Yes. The BL1852 BMS has model-specific firmware, so it works correctly with real Makita chargers. It reports the charge, checks that it’s real, and prevents accidents. Handshake is validated on 100% of units at the end of the line.
Does the BL1852 use a proprietary mold?
This SKU uses a proven standard form factor (not an in-house mold). It is designed to fit and lock properly with the original equipment manufacturer (OEM) latch geometry.
What cells and configuration does the BL1852 use?
The BL1852 uses high-quality 18650 cells (5200 mAh each) arranged in a 5S2P configuration, providing a nominal 18V and a true rated capacity of 5.2Ah. 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 BL1852 packed for shipping?
The BL1852 ships 20 pieces per master carton (8.1 kg gross), and the carton measures 443*290*170 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.