Description Dual Outlet USB Rechargeable Aquarium Air Pump – With Battery Backup We use these air pumps extensively on our own fish tanks. They have been reliable and very quiet in daily operation. This dual outlet USB rechargeable aquarium air pump provides consistent aeration for small to medium aquariums and automatically switches to battery power during power outages. With a total airflow of 3.0 L/min and two independent outlets, it can supply air to multiple tanks or split air lines from a single unit. When external power is lost, the internal rechargeable battery takes over automatically, maintaining aeration without interruption. Depending on operating mode and load, the battery provides up to 35 hours of runtime. The pump offers both constant operation and intermittent mode (10 seconds on / 10 seconds off) to extend battery life during extended outages. The pump can operate on USB power, run unplugged on its internal rechargeable battery, includes a USB-to-AC wall adapter for normal household outlet use, and can also be powered or recharged from external USB sources such as power banks. Key Features • Dual outlet design for running multiple air lines or tanks• Very quiet operation• Built-in rechargeable battery with automatic power-loss switching• Constant and intermittent operation modes• USB powered with included wall adapter for standard outlet use• Compact and portable for emergency or mobile setups Technical Specifications • Power consumption: 3 W• Input voltage: 5 V DC (USB)• Airflow rate: 3.0 L/min total• Outlets: Dual, independent• Battery runtime: Up to approximately 35 hours (continuous use)• Operation modes: Constant / Intermittent (10 s on / 10 s off)• Noise level: < 35 dB Recommended Tank Use • Up to approximately 60 gallons for primary aeration and sponge filtration• Suitable for larger aquariums when used for supplemental aeration or emergency oxygenation Included in the Box • Dual outlet USB rechargeable air pump with built-in battery• USB charging cable• USB-to-AC wall adapter• Anti-backflow check valve• Instruction manual Common Use Cases • Day-to-day aeration for freshwater or marine aquariums• Supplemental air for planted tanks, sponge filters, or bio media• Quarantine and hospital tanks• Power-outage backup for established aquariums• Bait buckets and shrimp holding systems• Portable or temporary aquarium setups
