LXT Lithium-ion battery and optimum charging system produces 280% more lifetime work with 2x more cycles Charging at any time will have no effect on the battery Built-in shock absorbing features protect the battery Sixteen (16) firm holding contact terminals reduce the risk of power loss/fluctuation in high vibration work environments 5x low self-discharge keeps battery cells active and ready for use, even after long periods of storage Battery's built-in memory chip communicates with the charger to maximize battery life using three active controls (current, voltage and thermal)