Makita BL1830 21700 18V 4Ah Replacement Battery

Makita BL1830 21700 18V 4Ah Replacement Battery
Makita BL1830 21700 18V 4Ah Replacement Battery
Makita BL1830 21700 18V 4Ah Replacement Battery
Makita BL1830 21700 18V 4Ah Replacement Battery

Makita BL1830 21700 18V 4Ah Replacement Battery

The Makita BL1830 21700 18V 4Ah replacement battery, assembled in Australia by Marsen Energy, is engineered to deliver reliable power and extended runtime across a wide range of Makita 18V tools. Built with high-performance Molicel P42A 21700 lithium-ion cells and a built-in battery management system (BMS/PCB), it provides consistent output, enhanced safety, and long-lasting durability.

Designed as a direct replacement for Makita BL1830/LXT batteries, it maintains a steady 18V supply, features low self-discharge, and ensures dependable cordless performance for both professional and DIY applications.

$138.00

In stock

In stock

Specifications

Makita BL1830 21700 18V 4Ah

  • Voltage: 18 V

  • Capacity: 4.0 Ah (4000 mAh)

  • Cell Type: Premium Molicel P42A 21700 lithium-ion cells

  • Chemistry: Li-ion

  • Battery Management System: Integrated BMS (PCB) for protection against over-charging and over-discharging,

  • Compatibility: Makita 18V LXT tools (BL1830 form factor)

  • Charging: Compatible with Makita 18V LXT chargers

  • Housing: Durable, impact-resistant construction with secure terminals

Applications

Makita BL1830 21700 18V 4Ah

Ideal for both professionals and DIY enthusiasts, this 4Ah replacement battery powers a wide variety of Makita 18V LXT cordless tools — including drills, drivers, saws, grinders, and sanders — providing reliable energy for construction, woodworking, renovation, maintenance, and general workshop use.

Important Information

Please read and follow these safety guidelines before purchase or use:

General Lithium-Ion Battery Safety

  • Only purchase if you understand Li-ion battery safety and proper handling procedures.

  • Always use a compatible Li-ion smart charger. Never leave batteries charging unattended.

  • Store batteries in a protective case — never carry them loose in your pocket, bag, or toolkit.

  • Avoid contact with metal objects such as keys, coins, or tools to prevent accidental short-circuiting.

  • Use within manufacturer-rated specifications. Do not exceed voltage, current, or temperature limits.

  • In series or parallel packs: ensure proper cell balancing and use a quality Battery Management System (BMS)

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