Makita Usa Inc BL1840B 18V Lxt 4.0ah Lithium-ion Battery

Product Description

The MAKITA USA INC BL1840B is an 18-volt LXT lithium-ion battery rated at 4.0 amp-hours (Ah), designed for use with Makita 18V LXT and 18V Compact cordless tools. It delivers up to 35% more run time per charge compared to standard batteries and reaches a full charge in 40 minutes or less. The BL1840B is equipped with Star Protection Computer Controls, a proprietary system that guards against overloading, over-discharging, and overheating during operation. An integrated LED battery charge level indicator allows the technician to monitor remaining charge at a glance before or during a job.

This battery is suited for trade professionals and jobsite crews running Makita 18V LXT platform tools in demanding environments. It is specifically designed for tools carrying the Star Protection symbol or featuring a yellow battery receiver under the tool. The BL1840B performs reliably in extreme temperatures, including cold-weather conditions down to -4 degrees F (-20 degrees C), making it a practical choice for outdoor work and winter job sites. It is sold in a package quantity of 6 units, which suits fleet service and tool room restocking.

Key Features

• 18V LXT lithium-ion chemistry at 4.0Ah capacity for extended run time
• Reaches full charge in 40 minutes or less
• Star Protection Computer Controls guard against overloading, over-discharging, and overheating
• Integrated LED charge level indicator for at-a-glance battery status monitoring
• 16 contact terminals maintain constant tool connection, reducing power loss during high-vibration applications
• Impact-resistant outer case with shock-absorbing inner liner for jobsite durability
• Rated for operation in extreme temperatures down to -4 degrees F

Compatibility

Compatible only with Makita 18V LXT and 18V Compact tools equipped with Star Protection, identified by the Star symbol or a yellow battery receiver under the tool. Not compatible with non-Star Protection tools.

Installation Notes

Installation and removal of the battery require no tools — slide the pack into the tool battery slot until it clicks into place and verify the connection is secure before operation. Power down the tool completely before swapping batteries. Do not attempt to disassemble, short-circuit, or expose the battery pack to water or direct flame. Charge only with a compatible Makita LXT charger rated for 18V lithium-ion packs.