Review on 🐠 AquaMiracle Lithium Battery Powered Portable Aquarium Air Pump: Rechargeable & Versatile for Fish Tanks, Fishing, and Power Outages by Kristen Rohr

Works as described. Can be used 24/7 as a normal pump. In the event of a power or AC power failure, the pump will automatically switch to battery/DC mode. Just what I need as a backup as my last power outage in town lasted 8 hours and killed all my exotic saltwater fish. Hopefully this pump will save a life when the power goes out again. It is very powerful like a double outlet pump. I have 80 liters and 50 liters at the same time. It's pretty strong and makes tons of bubbles. It's quiet like other pumps I've used. Will definitely be ordering more for my other tanks.