Little Giant SPBS-1HF Sump Pump Backup System – 1 Amp Charger, 12V DC Pump, 2,520 GPH, 20' Lift, 115V, Model 506404

Little Giant 506404 SPBS-1HF Sump Pump Battery Backup System – Automatic Flood Protection

Protect your home or business from unexpected flooding with the Little Giant 506404 SPBS-1HF Sump Pump Battery Backup System. Designed to work seamlessly with your primary 115V AC sump pump, this fully-automatic backup system provides an additional layer of defense against water damage when your main pump fails due to power outages, blown fuses, tripped circuits, or switch malfunctions.

Equipped with a 12 VDC backup pump, intelligent system controller, and a 1 Amp automatic charger, the SPBS-1HF ensures reliable temporary operation during emergencies. Capable of delivering up to 42 GPM at 0’ lift (2,520 GPH) and maintaining performance up to 20’ shut-off head, this system is engineered for dependable protection. For extended runtime, the system is designed to work with a deep-cycle AGM or lead-acid battery (not included), recommended at 85–140 Ah capacity, housed in a Group 27 battery case.

With up to 7 hours of backup operation at 8 feet of head pressure, the SPBS-1HF offers peace of mind during storms, outages, or unexpected pump failures.

Key Features & Benefits

• Fully Automatic Backup System – Activates instantly when the primary pump fails.

• Strong Backup Pump – Provides up to 2,520 GPH at 0 ft and 1,200 GPH at 10 ft, with a maximum shut-off of 20 ft.

• Durable Construction – Plastic housing with stainless steel motor shaft and nylon impeller for long service life.

• System Controller with Automatic Charger – Keeps your backup battery fully charged and ready.

• Flexible Charging Options – Available in 1, 10, or 12 Amp models.

• Reliable Float Switch Operation – RS-12 switch automatically engages the backup pump as needed.

• Extended Runtime – Operates up to 7 hours with recommended Group 27 battery.

• Compact & Lightweight – Easy to install with no plumbing modifications required.

• Warranty Protection – Backed by a 36-month limited warranty.

Technical Specifications

• Model: SPBS-1HF

• Horsepower: N/A (12 VDC backup motor)

• Max Flow: 42 GPM / 2,520 GPH (0 ft head)

• Flow at 10 ft head: 1,200 GPH

• Shut-Off Head: 20 ft

• Voltage: 115V AC input / 12V DC output

• Charging Unit: OEM-1201, 1A automatic charger

• Float Switch: RS-12, engages at 13.5", off at 9"

• Cord Length: 9 ft (pump), 6 ft (charger)

• Max Fluid Temp: 120 °F

• Construction: Plastic body, nylon impeller, Viton retainer seal, stainless steel motor shaft

• Dimensions: Pump length 5.5"

• Weight: 13.15 lbs (packaged)

• Battery Case Size: Group 27 (12.06" x 6.81" x 8.87") – battery not included

• Warranty: 36 months

Common Applications

• Residential basements & crawl spaces – Protects against flooding during storms and power outages.

• Light commercial buildings – Backup sump system for offices, shops, or facilities.

• Critical sump installations – Provides redundancy in high-risk water intrusion areas.

• Emergency preparedness – Peace of mind knowing your pump will keep running even when power is out.

Stay Protected with Reliable Backup Power

Flooding can cause thousands in damage in just minutes. With the Little Giant SPBS-1HF Battery Backup System, you’ll have a dependable second line of defense that activates when your main sump pump can’t. Compact, easy to install, and backed by a 3-year warranty, it’s a smart investment in protecting your property.