If the battery runs out, don't worry, it could be ready to go again just after 2.5 hours charging. Take one, and enjoy your summer pool time! Product type: Cordless Robotic Pool Cleaner. Product size: 14.512.26.5 Inch (36.73116.6 cm).Product weight: 7.72 pounds (3.5 kg). Maximum suction rate: 925 GPH (3.5 m³/h). Battery type: Ternary lithium battery. Charging time: 2.5 hours. Cleaning area: Up to 900 sq. Moving speed: 19-59 ft/min (6-18 m/min). Maximum water depth: 8.2 ft (2.5 m). Bottom brush: 2x Silicone scrapers. EASY TO USE: Cordless design lets you never worry about messy hoses and tangled cables. You just press the start button and put the robot in the water, it will start cleaning automatically. LONGER BATTERY LIFE: 5000 mAh ternary lithium battery only takes 2.5 hours of charging time. When fully charged it could run for over 90 minutes to clean your pool. The cleaner is ideal for many shapes of above-ground pools or in-ground flat-floored pools up to 900 sq. EXCELLENT CLEANING EFFECT: With the powerful dual motors inside, two silicone scrapers below and a closely woven filter screen can this cleaner robot eliminate most kinds of dirts in your pool. INTELLIGENT SELF-PARKING FUNCTION: When the vacuum cleaner finishes cleaning or the battery is low, it will automatically return and stop by the pool. You can easily retrieve it using a hook included in the package.