Improving run-time, power and speed; the M12 XC High Capacity REDLITHIUM Battery will provide 2X the run-time and increased performance as compared to the M12 Compact REDLITHIUM battery pack in all M12 tools. Milwaukee REDLITHIUM batteries are the next generation in Lithium Ion technology. Compatible with all products in the M12 Cordless tool system, REDLITHIUM battery packs will provide unmatched runtime, performance and durability for the professional tradesman.