VEVOR Misting Fan, 2400RPM Motor Camping Misting Fan, Mister Cooling Fans with 3.17 gal Water Tank, 20000mAh Battery, 4-Speed Wind & 3 Lighting Modes, Water Cooling Fans for Indoor, Outdoor, Patio

Both tubes need to be placed into the water tank. One is the water suction tube to deliver water to the atomizer, the other is the return tube for circulating excess water back to the tank.

In low-speed mode with the mist function turned off, the unit can operate continuously for up to several dozen hours (or overnight); if used at high speed with the mist, lighting, and oscillation functions turned on, the runtime will be correspondingly shorter.

No, it does not come with two batteries.

Yes, both the fan unit and the 12L water tank are included in the package.