Makita 18V 5Ah Battery BL1850B Li-Ion – LXT Compatible
Makita 18V 5Ah Battery BL1850B Li-Ion – LXT Compatible
Makita 18V 5.0Ah Lithium-Ion Battery – BL1850B
Keep your Makita 18V power tools running longer with this genuine-spec 18V 5.0Ah Lithium-Ion battery. Engineered for compatibility across the full Makita 18V LXT platform, this high-capacity pack delivers extended run time, rapid charge acceptance, and intelligent cell protection — making it the ideal workhorse battery for demanding job sites and everyday projects alike.
Key Features
- High Capacity – 5.0Ah / 5000mAh: Up to 2.3× more run time per charge compared to a standard 3.0Ah battery, so you spend more time working and less time waiting.
- Advanced Cell Balance Technology: Upgraded circuit board with single-cell balance detection keeps every cell charged and discharged evenly, maximising battery lifespan.
- Built-In Protection Circuit: Safeguards against overvoltage, short circuits, and internal overheating to keep both the battery and your tools safe.
- Built-In Memory Chip & CPU: Automatically optimises the charging cycle to maintain peak battery performance over hundreds of charge cycles.
- LED Charge Indicator: Clearly displays remaining power at a glance — no guessing when to recharge.
- Rugged, Shockproof Housing: High-quality, impact-resistant casing stands up to the knocks and drops of a busy work environment.
- Universal Charger Compatibility: Works with 14.4V–18V chargers; charger input 110V–240V; output 14.4V–18V DC 3A.
- Multiple Certifications: CE, FCC, RoHS, PSE, and TÜV certified for quality and safety assurance.
Specifications
| Battery Type | Li-Ion |
| Nominal Voltage | 18V |
| Nominal Capacity | 5.0Ah (5000mAh) |
| Compatible Voltage Range | 14.4V – 18V |
| Charger Input | 110V – 240V AC (universal) |
| Charger Output | 14.4V – 18V DC, 3A |
| Weight | 570g |
| Model Number | MT-18V |
| Certification | CE, FCC, RoHS, PSE, TÜV |
| Country of Origin | Made in Mainland China |
⚠ Note: This battery is NOT compatible with Makita 10.8V lithium battery chargers. Please use a 14.4V–18V compatible charger only.
Compatible Replacement Battery Codes
BL1815, BL1830, BL1840, BL1840B, BL1845, BL1850, BL1850B, BL1860, BL1860B, LXT400 | 194204-5, 194205-3, 194309-1, 194230-4
Also compatible with 14.4V models: BL1415, BL1430, BL1440, BL1445, BL1460
Compatible Makita Power Tool Models
BDF453SHE, BDF454Z, BHP452, BML184, BML185, BST221Z, BTDW251Z, ML185, TD140D, TW251D | BCS550 / BCS550Z | BDA350 / BDA350Z | BDF451 / BDF451Z | BFR550L / BFR550Z | BFR750 / BFR750L / BFR750Z | BFS450 / BFS450RFE / BFS450Z | BGA452 / BGA452Z | BHP451 / BHP451SFE / BHP451Z | BHP453 / BHP453SHE | BHP454 / BHP454Z | BHR202 / BHR202RFE / BHR202Z | BHR240 / BHR240Z | BHR241 / BHR241Z | BJR181 / BJR181X / BJR181X1 / BJR181Z | BJR182 — and many more 18V LXT platform tools.
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Frequently Asked Questions
Q: Is this battery compatible with all Makita 18V LXT tools?
A: Yes — this 18V 5.0Ah Li-Ion battery is designed to be compatible with the full Makita 18V LXT platform, including drills, impact drivers, angle grinders, reciprocating saws, and many other 18V Makita tools. Please refer to the compatible model list above to confirm your specific tool model.
Q: Can I charge this battery with my existing Makita charger?
A: This battery is compatible with Makita chargers designed for 14.4V–18V Li-Ion batteries. Please note it is NOT compatible with 10.8V Makita chargers. The charger accepts universal AC input (110V–240V), making it suitable for use in most countries.
Q: How long does this battery last compared to a standard 3.0Ah pack?
A: At 5.0Ah capacity, this battery delivers up to 2.3× more run time per charge than a standard 3.0Ah battery, significantly reducing downtime on the job site and letting you tackle longer tasks without interruption.
Q: What safety protections does this battery include?
A: The battery features a built-in multi-protection circuit that guards against overvoltage, short circuits, and internal overheating. The single-cell balance detection system also prevents individual cells from overcharging or over-discharging, helping to extend the overall life of the battery pack.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.