Features: REDLITHIUM FORGE provides the most power, faster charging, and longer life vs standard REDLITHIUM batteries Delivers HIGH OUTPUT 12.0Ah power in a smaller size and lighter weight design COOL-CYCLE Active Cooling System provides high-speed cooling for less downtime, when paired with COOL-CYCLE capable chargers 35 minute supercharge to 80% and 45 minutes supercharge to 100% when charging one M18FB8 using the M18 Dual Bay Super Charger (M18DBSC) Longest life for the most recharges and best performance over the life of the pack Patented ingress coating provides increased protection to maximise active cooling through an upgraded venting design Resistant housing designed to provide increased protection against exposure to common oils, greases, and solvents Enhanced onboard fuel gauge with rubber overmold and improved ]readability in direct sunlight.