EXCLUSIVELY FOR PUCRCX70: The replacement rechargeable battery is for use with PUCRCX70 SereneLife Robot Vacuum Cleaner only FIRST CHARGE: Before putting your robot on the charger for the first time check if the battery is completely depleted by running the robot. Once you have verified the battery is depleted allow the robot to charge undisturbed 5-6 hours before using AUTOMATIC CHARGING: Provides you a charging time of 5 to 6 hours until the robot vacuum is fully charged. It automatically backs off from the charging dock once charging is completed and is ready to be used again SPECIFICATIONS: The LiFePO4 9.6V Lithium-ion rechargeable battery has a charging time of 5 hours and capacity of 2000mAh. It has a long working time of 60 to 70 minutes per charge WORRY-FREE SHOPPING: With the Pyle PRTPUCRCX70BAT Replacement Rechargeable Battery we are confident of the quality of our product