Improving run-time, power and speed, the M12 XC 3.0 Ah High Capacity REDLITHIUM Battery 2-Pack 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.