The M18 REDLITHIUM®-ION HIGH OUTPUT 6.0Ah battery pack provides 50% more power and runs 50% cooler vs M18™ REDLITHIUM®-ION 9.0Ah battery packs. The optimised combination of size and increased power provides a great solution for the entire range of M18™ products. It delivers fade free power and runs substantially cooler through heavy applications, allowing tradesmen to push their cordless tools harder and longer than ever before.