A complete 48-volt battery-backup aeration system for ponds and small lakes up to 2.5 acres, designed for nighttime operation and reserve power during periods of limited sunlight.
Product Overview
The SD2-BB is a complete solar lake aerator with battery backup for ponds and small lakes up to 2.5 acres. It combines the proven SD-2 subsurface aeration platform with a 48-volt battery backup system for nighttime operation and reserve power during periods of limited sunlight.
Designed for customers who need more than daytime-only solar aeration, the SD2-BB uses a three-phase brushless rocking piston compressor with two DB-36 stainless steel diffusers, then adds four AGM batteries, MPPT charging, intelligent runtime controls, and automatic system protection. The system is engineered for round-the-clock aeration while retaining the off-grid advantages of solar power.
The SD2-BB is well suited for remote ponds, small lakes, farms, recreational properties, wildlife ponds, livestock water, homeowners associations, golf courses, camps, parks, and off-grid water-quality projects. Subsurface aeration helps increase dissolved oxygen, reduce stagnation and odors, improve water clarity, support fish health, and promote the natural biological breakdown of organic material.
Why Choose the SD2-BB?
SD-2 Aeration Performance with Battery Backup
The aeration section uses the same professional-grade SD-2 platform found in the Solar Direct lineup. A three-phase brushless rocking piston compressor delivers 2.8 SCFM to two DB-36 stainless steel diffusers. Two full-flow brass balancing valves allow airflow to be adjusted between diffuser locations, helping the system serve ponds with separate basins, varying depths, or irregular geometry.
48-Volt Battery Backup and Smart Controls
Four AGM batteries form a 48-volt battery bank that supports nighttime aeration and reserve operation during poor weather. MPPT solar charge control with Bluetooth manages charging efficiency, while the proprietary controller provides digital scheduling, runtime control, low-voltage shutdown, temperature monitoring, and automatic active ventilation.
Complete SD2-BB Kit Includes
Reserve Runtime: The system is designed for 24/7 operation with up to three days of reserve under appropriate operating conditions. Actual reserve time varies with battery condition, temperature, system settings, solar availability, operating depth, and airflow demand.
Technical Specifications
System Capacity
Aeration Platform
Solar, Charging, and Controls
Enclosure, Diffusers, and Airline
Installation Note: Use a 3-inch Schedule 40 or Schedule 80 steel pole with a 3.5-inch outside diameter. Do not use plastic pipe or tubing. Correct pole installation, solar orientation, battery-enclosure placement, diffuser placement, airline routing, and airflow balancing are important for reliable performance.
Warranty and Support
Use the current approved U.S. Solar Mounts warranty summary and complete warranty policy with this product listing. Warranty terms, registration requirements, and component-specific coverage should not be altered. In-house U.S. technical support is available for system selection, installation, and service questions. For application assistance, provide the pond size, average and maximum depth, available sunlight, desired operating schedule, and approximate distance from the equipment location to each diffuser.
A complete 48-volt battery-backup aeration system for ponds and small lakes up to 2.5 acres, designed for nighttime operation and reserve power during periods of limited sunlight.
Product Overview
The SD2-BB is a complete solar lake aerator with battery backup for ponds and small lakes up to 2.5 acres. It combines the proven SD-2 subsurface aeration platform with a 48-volt battery backup system for nighttime operation and reserve power during periods of limited sunlight.
Designed for customers who need more than daytime-only solar aeration, the SD2-BB uses a three-phase brushless rocking piston compressor with two DB-36 stainless steel diffusers, then adds four AGM batteries, MPPT charging, intelligent runtime controls, and automatic system protection. The system is engineered for round-the-clock aeration while retaining the off-grid advantages of solar power.
The SD2-BB is well suited for remote ponds, small lakes, farms, recreational properties, wildlife ponds, livestock water, homeowners associations, golf courses, camps, parks, and off-grid water-quality projects. Subsurface aeration helps increase dissolved oxygen, reduce stagnation and odors, improve water clarity, support fish health, and promote the natural biological breakdown of organic material.
Why Choose the SD2-BB?
SD-2 Aeration Performance with Battery Backup
The aeration section uses the same professional-grade SD-2 platform found in the Solar Direct lineup. A three-phase brushless rocking piston compressor delivers 2.8 SCFM to two DB-36 stainless steel diffusers. Two full-flow brass balancing valves allow airflow to be adjusted between diffuser locations, helping the system serve ponds with separate basins, varying depths, or irregular geometry.
48-Volt Battery Backup and Smart Controls
Four AGM batteries form a 48-volt battery bank that supports nighttime aeration and reserve operation during poor weather. MPPT solar charge control with Bluetooth manages charging efficiency, while the proprietary controller provides digital scheduling, runtime control, low-voltage shutdown, temperature monitoring, and automatic active ventilation.
Complete SD2-BB Kit Includes
Reserve Runtime: The system is designed for 24/7 operation with up to three days of reserve under appropriate operating conditions. Actual reserve time varies with battery condition, temperature, system settings, solar availability, operating depth, and airflow demand.
Technical Specifications
System Capacity
Aeration Platform
Solar, Charging, and Controls
Enclosure, Diffusers, and Airline
Installation Note: Use a 3-inch Schedule 40 or Schedule 80 steel pole with a 3.5-inch outside diameter. Do not use plastic pipe or tubing. Correct pole installation, solar orientation, battery-enclosure placement, diffuser placement, airline routing, and airflow balancing are important for reliable performance.
Warranty and Support
Use the current approved U.S. Solar Mounts warranty summary and complete warranty policy with this product listing. Warranty terms, registration requirements, and component-specific coverage should not be altered. In-house U.S. technical support is available for system selection, installation, and service questions. For application assistance, provide the pond size, average and maximum depth, available sunlight, desired operating schedule, and approximate distance from the equipment location to each diffuser.
