Solar air pump with battery back up

Aquarium Oxygen Aerator, Pond Aerator, Air Pump, Fishing Aerator Aquarium Air pump with Airline Tubing and Air Stone.

Description:
Solar oxygen pump with built-in a 1800mAh lithium battery for storing energy, thus the oxygen pump working in the night as well. Just put the solar panel in a sunny spot and it starts automatically. Suitable for a small to a medium-sized pond, outdoor fish tank or water reservoir, etc.

Features:
[Environment-friendly Solar Energy]The use of solar energy makes it environment-friendly, portable, and easy to install with no need for wiring, no operating cost, and maintenance-free, and solar power is much safer for your kid.
[Large Air Volume]Stable silent oxygen pump with less than 60 dB low noise and 1.4L/min air volume, suitable for 40-250L container.
[Battery Backup]Built in a 3.7V 1800mAh 18650 lithium battery pack for storing energy, thus the oxygen pump working in the night as well.
[Evenly Air Distribution]There are 3 working modes that can meet your different demands, and two airflow outlets make the air distribution more even and pervasive.
[Adjustable Angle]The solar panel angle can be adjusted to receive the sunlight most sufficiently. Perfect for bird baths, small pond, garden decoration, water circulation for oxygen, etc.

Product Working mode:       
Pattern 1: high speed (green light normally on) working hours: 24 hours, flow: 1.3 L/min       
Pattern 2: low speed (blue light normally on) working hours: 48 hours, flow: 0.7 L/min       
Pattern 3: Low gear Open 10 seconds stop for 10 seconds (green and blue double color light normally on) working hours: 72 hours    

Specifications:
Material: ABS       
Solar panel：5W Polycrystalline solar panel included   
Battery：7.4V 2400mAH       
Product working voltage range：5.5V－8.4V       
Discharge protection voltage：5.5V       
Over charge protection voltage：8.4V    
Solar charge time: 8 hours         
Max. working current: 150MA (high grade); 100MA (low gear)       
Noise: 60dB       
Min. Air Flow: 1.4L/min       
Working Time: Approx. 24 hours       
Oxygen Hose Length: 200cm / 78.7in       
Air stone deepth: 100cm/39.37in       
Wire length: 3M / 118in    
Solar panel size: 27*18*2cm/10.62*7.08*0.78inch  
Pump  Size: Approx. 9.5*5.5*5cm

Package List:
1 * Solar Oxygen Pump       
1 * Package of Accessory       
2 * Air Stone       
1 * 2M Aquarium Oxygen Pipe       
1 * Manual (English)    

Note: This product is an electronic product. The oxygen-increasing device cannot be placed in water, and the diversion hole cannot be blocked.