The De Walt 14.4V XRP Lithium Ion battery, No. DC9144, is compatible with any existing De Walt 14.4V tool, providing professional contractors with the flexibility to select the best battery chemistry to meet jobsite demands. Offering 2,000 recharges, the DC9144 battery is designed with Nano-Phosphate Lithium Ion cells, for a combination of longer cycle life, lighter weight and greater performance.