We highly recommend this air pump for emergency back-up air in aquarium, small tanks, and small ponds.
The pump is designed to run continuously on 110V power.
When the power shuts off, the pump automatically switches over to battery back-up and continues to run until power is turned back on.
It features two modes of back-up operation: Hi - runs 14 hours continuously on full battery mode; Low - runs 28 hours on intermittent mode where the pump is on for 50 seconds then of for 50 seconds.
Utilizes universal 6V 4.0 Ah battery (included), which is easily accessible.
Two 3/16" outlets provide 0.15 cfm of air at 30" of water depth.
SODIAL Battery Powered Portable Air Pump for Aquarium Fish Tank
The Penn Plax Silent Air B11 Battery Powered Air Pump is a powerful and versatile aquarium air pump that provides continual oxygen flow during a power outage or when there is any interruption to your AC power.
Penn Plax Silent-Air Battery-Powered Aquarium Air Pump
Moreover, aquarium air pumps can also be categorized by their power source. Some aquarium air pumps are battery powered, some are powered with a good old electrical outlet, and some have the capability to do either or. On a side note, if you are using the pump to power an under gravel filter, you will definitely need to know the size of the tank and what size of tank the pump is rated for.
Aquarium Fish Tank Portable Battery Powered Air Pump Light Blue