When used with a GoFit cordless unit, the high/low power switch enables the user approximately 51 minutes of runtime on low setting for routine or detail cleaning and approximately 39 minutes on high setting for deep cleaning and high-traffic areas. Stay informed about the battery's remaining runtime with an easy-to-read battery pack gauge. A quick press of the indicator button reveals the battery level with one to four light indicators. The battery fits either the 3 qt. or 6 qt. GoFit cordless unit. Recharge it to full in approximately 61 minutes with minimum charge cycles of 1000. Only charge with 107685 charger.