Makita BL1840 18V Battery — 4.0Ah Replacement for LXT Tools

Makita BL1840 18V Battery — Key Specifications

The Makita BL1840 18V battery is a direct plug-and-play replacement for the original Makita BL1840 battery pack, delivering high-capacity 4.0Ah performance for Makita 18V LXT cordless tools.

Model: BL1840 Voltage: 18V Capacity: 4.0Ah Cell Type: Lithium-Ion (Li-ion) Dimensions: 113 × 74.5 × 63 mm LED Indicator: Built-in charge level display Compatible Platform: Makita 18V LXT Certifications: CE / RoHS MOQ: 100 pcs (OEM/ODM available)

Compatible Makita 18V LXT Tools

The Makita BL1840 18V battery fits all Makita 18V LXT cordless tools with no modification needed, including drills and hammer drills, impact drivers and impact wrenches, angle grinders, circular saws and reciprocating saws, jigsaws, cordless vacuums, LED worklights, and any other Makita 18V LXT platform tool. For the full compatible tool list, visit the official Makita website.

 Why Choose HNF Battery?

Grade-A Cells for Consistent Performance

We use only Grade-A lithium-ion cells in every Makita BL1840 18V battery pack. Grade-A cells deliver stable voltage output, longer cycle life (500+ charge cycles), and lower self-discharge compared to generic replacements. Your tools run at full power longer and your battery lasts for years, not months.

Built-in BMS Protection

Every BL1840 18V battery includes a fully integrated Battery Management System (BMS) protecting against overcharge, over-discharge, short circuit, and overheating — safeguarding both your battery and your tools.

LED Charge Indicator

The built-in LED charge indicator lets you check remaining battery level at a glance before starting work, reducing unexpected downtime on the job.

Drop-in Replacement — No Modification Needed

Engineered to the exact same dimensions (113×74.5×63mm) and connector as the original Makita BL1840. Simply slide it into your tool and start working. No adapters, no firmware updates, no compatibility issues.

CE / RoHS Certified

Our batteries carry CE and RoHS certifications, confirming compliance with international safety and environmental standards. UN38.3 test reports are available upon request for air freight shipments.

Factory Direct Pricing

HNF Battery manufactures directly with no middlemen. Whether you need 100 units or 10,000 units, we deliver consistent quality at competitive wholesale rates.

 OEM & Custom Orders

HNF Battery supplies wholesale distributors, power tool retailers, and private-label brands worldwide. Custom capacity options (3.0Ah, 4.0Ah, 5.0Ah, 6.0Ah), branding, and packaging are available from 100 units. All batteries are pre-tested before shipment and backed by a 12-month warranty. Full export documentation provided including UN38.3 test reports.

MOQ starts from 100 units. Samples are available before bulk orders. For a factory quote, visit our