Aquarium Air Pump with Battery Backup for Power Outages

<p>An aquarium air pump with a built-in rechargeable battery, so the tank keeps getting oxygen during a power cut. The pump runs on AC power and switches to battery automatically when the power goes out. It charges through a USB Type-C cord, which works with a wall adapter, power bank, laptop, or car USB.</p><p>Choose the model that matches your tank:</p><ul><li>1.5W, single outlet, for tanks up to 33 gallons (4.33 x 2.6 x 1.6 in)</li><li>3W, dual outlets, for tanks up to 170 gallons (4.7 x 2.8 x 1.6 in)</li><li>4W, dual outlets with a digital display, for tanks up to 200 gallons (5.5 x 3.15 x 1.77 in)</li></ul><p>The kit includes an air tube, an air stone, a check valve, a USB adapter, and a Type-C charging cord. The 3W and 4W models include two air tubes, two air stones, and two check valves. Each unit is one air pump kit.</p>

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