U1 Battery 180W for ASIWO U1. The original external battery pack for ASIWO U1 Universal Underwater Scooters provides up to 80 minutes of runtime. Enhance your underwater adventures with extended operating time. Input: DC 42V/2.0A Battery LI-ION 18650 36V 5.0Ah 180Wh Charging Time: 3-4 hours Battery Weight 1.87kg