Makita BL1850B 18V Battery — 5.0Ah Replacement for LXT Tools

Makita BL1850B 18V Battery — Key Specifications

The Makita BL1850B 18V battery is a direct plug-and-play replacement for the original Makita BL1850B battery pack, delivering high-capacity 5.0Ah performance for the entire Makita 18V LXT cordless tool platform.

Model: BL1850B Voltage: 18V Capacity: 5.0Ah (5,000mAh) Cell Type: Lithium-Ion (Li-ion) Connector Type: Slide-type Charge Time: ~45 minutes (with compatible fast charger) LED Indicator: Built-in charge level display Compatible Platform: Makita 18V LXT (200+ tools) Certifications: CE / RoHS MOQ: 100 pcs (OEM/ODM available)

Compatible Makita 18V LXT Tools

The Makita BL1850B 18V battery fits all Makita 18V LXT cordless tools with no modification or adapter needed. Compatible tools include drills and hammer drills, impact drivers and impact wrenches, circular saws and reciprocating saws, angle grinders and multi-tools, cordless vacuums and blowers, LED worklights, and any other Makita 18V LXT slide-type tool. For the full compatible tool list, visit the official Makita website.

67% More Runtime Than a Standard 3.0Ah Battery

At 5.0Ah, this battery provides up to 67% more runtime than a standard 3.0Ah pack. That means fewer interruptions, fewer battery swaps, and more time doing the work that matters. Ideal for contractors, tradespeople, and wholesale buyers who supply professionals who run their tools hard throughout the day.

Why Choose HNF Battery?

Grade-A Cells for Consistent Performance

We use only Grade-A lithium-ion cells in every Makita BL1850B 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.

Smart BMS Protection — Every Charge, Every Use

Every BL1850B battery includes a fully integrated Battery Management System (BMS) that actively monitors and protects against overcharge, over-discharge, short circuit, and overheating — safeguarding both your battery and your tools cycle after cycle.

Fast Charge Compatible — Full Power in ~45 Minutes

Pair with a compatible Makita 18V fast charger and get back to a full charge in approximately 45 minutes. No long waits, no lost productivity on the job site.

LED Charge Indicator — Always Know Your Levels

The onboard LED charge indicator lets you check remaining battery level at a glance before starting work, so you are never caught off guard mid-cut or mid-drill.

Stable Performance in Cold Conditions

Premium Grade-A lithium-ion cells are engineered for stable discharge performance even in low-temperature environments. Reliable power no matter the season or job site conditions.

Drop-in Replacement — No Modification Needed

Engineered to the exact same slide-type connector and dimensions as the original Makita BL1850B. 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. The BL1850B 18V battery is available for full OEM customization including custom capacity options (3.0Ah, 4.0Ah, 5.0Ah, 6.0Ah), custom branding and label design, and retail or bulk packaging options. Standard orders ship within 15–20 business days after deposit confirmation.

All batteries are pre-tested before shipment and backed by a 12-month warranty against manufacturing defects. Full export documentation provided including commercial invoice, packing list, and UN38.3 test report to support smooth customs clearance worldwide.

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