The 12V REDLITHIUM -ION HIGH OUTPUT 5.0Ah Battery delivers 25% more power and runs 25% cooler than the 12V REDLITHIUM -ION 4.0Ah Battery. The increase in power elevates the performance of the entire 12V system and drives the next breakthrough in 12V FUEL . The lithium-ion battery delivers fade-free power and runs substantially cooler through demanding applications, allowing you to push your cordless power tools throughout a wide range of applications. Each battery pack is built for heavy-duty use, runs cooler, and performs in climates below -18°C. In addition, the 12V REDLITHIUM -ION HIGH OUTPUT 5.0Ah Battery is built with a resistant housing, increasing the protection against exposure to common oils, greases, and solvents found in transportation maintenance and manufacturing environments. The 12V REDLITHIUM -ION HIGH OUTPUT 5.0Ah battery is fully compatible with 125+ 12V solutions. 12V REDLITHIUM -ION HIGH OUTPUT 5.0Ah Battery runs up to 25% cooler vs M12B4 Increased thermal protection is optimised for high draw tools ensuring batteries don’t overheat even in the toughest applications REDLINK intelligence. Provides optimised performance and overload protection 12V REDLITHIUM -ION HIGH OUTPUT 5.0Ah Battery delivers 25% more power vs M12B4