The Makita DHR263 has 36v power from 2 x 18v Lithium Ion batteries. By running 2 x 18v batteries Makita have managed to get the same power as a 36v machine while managing to keep the flexibility of running all your tools on the 18v Lithium Ion platform and compatible with 1.5Ah, 3Ah, 4Ah and 5Ah 18v batteries.