This Makita LXT Lithium-Ion battery offers 280% more lifetime work and 2x more cycles compared to standard batteries. It features a low self-discharge rate, keeping it ready for use even after long storage periods. Charging at any time has no negative impact on the battery's performance. Built-in shock-absorbing features protect the battery, and sixteen firm-holding contact terminals minimize power loss or fluctuation during high-vibration tasks. The integrated Memory Chip communicates with the charger to optimize battery life through 3 Active Controls: Current, Voltage, and Thermal. This battery is compatible with all Makita 18-volt LXT Li-ion tools. Makita STAR Protection is a communication technology that allows the tool and battery to monitor conditions and exchange data in real-time, protecting against overloading, over-discharging, and overheating. Look for Makita tools and batteries with the STAR logo to benefit from these advanced protection features. - Overload Protection: High-drain applications are demanding. Makita's STAR Protection Computer Controls enable the battery and tool to communicate and prevent damage by cutting power during abnormally high current draw. - Overcharge Discharge Protection: Lithium-ion batteries are designed for sustained performance. To prevent cell damage from complete depletion, STAR Protection monitors charge capacity and cuts power when the battery level is too low to complete an application, thereby extending battery life. - Overheat Protection: The battery incorporates mechanisms to prevent overheating during operation.