Sobo battery air pump SB-218

The Sobo SB-218 is a compact and portable sobo battery air pump designed for reliable aquarium aeration at home or on the go. It combines rechargeable battery convenience with quiet, steady airflow for small to medium tanks.

Main features

• Rechargeable 2600 mAh battery — long runtime for power cuts and outdoor use.

• Long working time (up to ~70 hrs in interval mode) — ideal for multi-day outings or emergency backup.

• Airflow up to ~3 L/min — sufficient for sponge filters, air stones and single small tanks.

• Very low power draw (≈1 W) — energy efficient when on mains or battery.

• Automatic AC/DC & USB charging — use on mains or charge by USB for portability.

• Compact, lightweight design — easy to carry for travel and fishing.

• Quiet operation — low noise level so it won’t disturb a room.

Technical specifications

• Model: Sobo SB-218.

• Battery: Built-in rechargeable lithium ~2600 mAh.

• Runtime: Up to ~70 hours in interval mode; typical continuous runtime 8–12 hours depending on mode.

• Airflow: Up to ~3 L/min (max).

• Power consumption: ~1 W.

• Pressure / head: ~0.018 MPa (suitable for modest lift).

• Outlets: Single outlet (single-line).

• Noise: Low / quiet (varies by mode; generally reported <40 dB).

• Power: AC/DC (USB chargeable) — supports both mains and battery operation.

Why pick the Sobo SB-218?

First, it gives reliable backup aeration when the power fails — so your fish stay safe. Second, it’s very portable for outdoor fishing or temporary setups. Finally, because it offers interval modes and low power use, it maximizes battery life and keeps noise low. Overall, it’s a practical choice for hobbyists who want a small, rechargeable backup pump

Best uses

• Emergency backup during power cuts.

• Portable aeration for outdoor fishing or temporary tanks.

• Sponge filters, small air stones, and individual aquarium accessories.

• Small freshwater and marine nano setups that need gentle, continuous aeration.

Installation & quick tips

1. Place the pump above the water level or use a check valve to prevent siphoning.

2. Use quality tubing and an appropriate air stone for better bubble dispersion.

3. For longest runtime, use interval mode (if available) for extended battery life.

4. Charge fully before outdoor use and avoid leaving the battery discharged for long periods.

Maintenance

• Keep the unit dry and dust-free.

• Clean/replace air stones periodically for consistent flow.

• If airflow drops, check tubing and stone for blockage.

• Unplug before cleaning.