Universal Compatibility: Specifically engineered to be compatible with a wide range of Makit power tools,Compatible with BL1860B, BL1860, BL1850B, BL1850, BL1840B, BL1840, BL1830B, BL1830, BL1820, BL1815, BL1825, BL1835, BL1845. ensuring seamless integration and reliable power supply for your equipment.Note: This battery needs to be charged with the charger that comes with our product. Enhanced Performance: Boasts advanced circuitry that optimizes power output, allowing your tools to operate at peak efficiency, getting jobs done faster. Long-Lasting Durability: Constructed with high-quality, rugged materials to withstand the rigors of heavy daily use, providing a prolonged lifespan and reducing the need for frequent replacements. Safety First: Equipped with multiple safety features like overcharge protection, short-circuit prevention, and thermal cut-off, safeguarding both you and your tools during operation. Easy Installation: Designed with a user-friendly interface, enabling effortless attachment and detachment to your batteries, saving you time and hassle on the job site.