The M12™ NRG pack includes the M12 B2 2.0 Ah battery and the C12 C M12™ charger, providing a reliable power solution for M12™ cordless tools. The 2.0 Ah battery delivers consistent performance and runtime, while the compact charger ensures fast and efficient charging to keep tools ready for use. This pack is ideal for users looking for a convenient starter or replacement power set for the MILWAUKEE® M12™ system.