Clean, dry and safe floors in minutes. No need to routinely replace batteries. The NX1k fast charge technology lasts 10 times longer than wet batteries, uses less material and allows for completely flexible charging. With NX1K battery, you enjoy durability, extended long-life power, savings, flexibility, and sustainability. Delivers over 4,000 charge cycles, your battery will last as long as your machine. Equipped with Nu-Assist APP, training and support at your fingertips.