The MILWAUKEE M18 REDLITHIUM FORGE XC8.0 Battery Pack delivers HIGH OUTPUT 12.0 power in a smaller size, with high‑speed cooling for less downtime in high‑demand applications, a 35‑minute supercharge to 80%, and the longest life vs REDLITHIUM batteries. REDLITHIUM FORGE are our most powerful, fastest‑charging, and longest‑lasting batteries. The M18 REDLITHIUM FORGE XC8.0 provides 8Ah of runtime with the same power as the M18 REDLITHIUM HIGH OUTPUT HD12.0, in a smaller and lighter design. The M18 REDLITHIUM FORGE XC8.0 is COOL‑CYCLE capable, with COOL‑CYCLE Active Cooling delivering high‑speed cooling for reduced downtime. An upgraded venting design and patented ingress coating increase protection and improve active cooling performance. The high‑speed cooling feature works with COOL‑CYCLE‑enabled M18 chargers. When paired with the M18 Dual Bay Simultaneous Super Charger, this battery charges to 80% in just 35 minutes. This lithium‑ion pack delivers the longest lifespan, the most recharges, and the best performance over its life, with a chemical‑resistant housing for added protection from oils, greases, and solvents. REDLINK Intelligence protects the battery from overloads. The M18 REDLITHIUM FORGE XC8.0 is fully compatible with 250+ M18 solutions. The M18 & M12 Rapid Charger accepts all MILWAUKEE M18 and M12 batteries and charges packs up to 40% faster, monitoring voltage, temperature, and charge status and indicating when 80% charge is reached.