The MILWAUKEE 12V Battery Packs and Charger are compatible with all M12 power tools and instruments. The M12 REDLITHIUM XC compact battery delivers 4.0 Ah of run time-even in sub-zero temperatures. The 12V lithium-ion battery pack features REDLINK Intelligence, engineered to prevent overloads and protect against cell-damaging discharge. This 12V battery has revolutionary cell monitoring and temperature regulation that prolong the battery’s operation and life expectancy for fewer work interruptions and more recharges than ever. The Milwaukee M12 Battery Charger charges batteries in as little as 30 minutes, minimizing downtime for professionals. The 12V battery charger has an easy-to-load design and a slim profile to conserve bench-top space. It also provides full system compatibility with 100+ M12 cordless solutions.