Makita BL1430 14.4 Volt Lithium-Ion Battery LXT Lithium-Ion battery & optimum charging system produces 280% total lifetime work with 2x more cycles 5x Lower self-discharge keeps battery cells active & ready for use, even after long periods of storage Charging at any time will have no effect on the battery Built-in shock absorbing features protect the battery Twelve (12) firm holding contact terminals reduce the risk of power loss/fluctuation in high vibration work environments Battery's built-in Memory Chip communicates with the charger to maximize battery life using 3 Active Controls (Current, Voltage & Thermal) Battery suitable for all Makita li-ion LXT 14.4 volt machines. Weight: 0.65kg