SimpliPHI® 6.6 Battery
Power your home with the SimpliPHI® 6.6 Battery. The SimpliPHI 6.6 Battery from Briggs & Stratton is the comprehensive, cutting-edge energy storage solution designed for the modern homeowner, offering powerful performance for multiple applications. Easily meet your household energy needs—whether you are adding reliable battery backup to keep your lights on during an outage, integrating storage with your solar array to maximize self-consumption, or participating in advanced Virtual Power Plant (VPP) programs. With the flexibility to stack up to three units for nearly 20 kWh of compact capacity, the SimpliPHI 6.6 allows you to manage energy usage strategically, helping to reduce high peak energy costs. Engineered for simplicity and seamless integration with leading inverters, and fully outdoor-rated, this system provides power security and efficiency, all backed by the trusted name of Briggs & Stratton.
To learn more, download our brochure and spec sheet.
Features
Faster Installations
Our unique RapidStak connector includes all communications and power in one connection. Assemble a stack of 3 in under 5 minutes.1
Wire and Hassle Free
No wires, no DIP switches, no complications. Installation requires fewer tools and accessories, and less cost.
Scalable for Any Application
Designed for maximum versatility, each battery delivers 6.65 kWh.2 Stack 3 for 19.95 kWh in a compact footprint. Scale up to 6 stacks for 119.7 kWh of energy.
Versatile Installation Options
IP65 rating supports all weather conditions for both indoor or outdoor installations. No cabinets needed. Ground or wall mount.
Choose Your Inverter
Designed to integrate with leading inverters, allowing ultimate flexibility and faster commissioning.
Designed for Versatility
Use for back-up power, time-of-use utility savings, solar+storage, or off-grid power.
Validated to the Industry's Toughest Safety Standards
UL 1642, UL 1973, UN 3480, UN DOT 38.3, UL 9540 Edition 3 (in progress). Tested to UL 9540A.
Safer Battery Chemistry
Our lithium ferro phosphate (LFP) battery designs have been utilized for decades and proven in the harshest environments.
Specifications
| Maximum per Stack | 3 |
| Maximum per System | 18 |
| DC Voltages - Nominal | 51.2 VDC |
| Amp-Hours | 130 |
| Rated kWh Capacity | 6,656 |
| MAX Surge Discharge Rate (10 Minutes) |
240 ADC, 2 sec 300 ADC, 1 sec |
| MAX Continuous Discharge Rate | 130 ADC |
| MAX Continuous Charge Rate | 100 ADC |
| DC Voltage Range¹ | 44.8 - 56.8 VDC |
| Charging Temperature¹ | -10°C ~ 50°C |
| Discharge Temperature | -20°C ~ 55°C |
| Operating Humidity | 0% - 95% RH |
| Storage Temperature¹ |
-20°C ~ 55°C for 1 month -20°C ~ 45°C for 6 months |
| Storage Humidity | 0% - 95% RH |
| Enclosure Material | Powder-coated Steel |
| Self-Discharge Rate | <.03 %/month (shutdown/off) |
| Cycle Life | 4500 Cycles @ 0.75C charge/discharge rate (@ 100% DOD) |
| IP Rating | IP 20 (IP 65 when installed) |
| Weight | 125 lbs (56.7 kg) |
| Dimensions (W x H x D) |
Width - 28.6 in. (725.0 mm) Depth - 6.7 in. (170.0 mm) Height without Tabs - 17.3 in. (440.0 mm) Height with Tabs - 18.9 in. (479.2 mm) |
| Wall Mount Dimensions (W x H x D) | 28.6 x 60.4 x 6.7 in. (Full Stack) |
| Efficiency Rating | ≥96% |
| Altitude | ≤3000M |
| Corrosion Resistance Rating | 240H |
| Salt-Fog Rating | 240H |
| Communications | CAN, RS485 - Compatible with leading inverters |
| Certifications | UL9540, UL 9540A, UL1973, UL 1998 + 991, UN 38.3, UN 3480, IEC62619 |
| Manuals |
Operator's Manual - English, Spanish-Colombian, French-Canadian |
All specifications listed are typical/nominal and subject to change without notice.
1 Based on physical installation of a stack of 3 and battery controller.
2 Total energy measured at .75C discharge rate at 100% DoD.
3 Based on use and operating temperatures.
4 See operator's manual or energy.briggsandstratton.com for complete warranty details.
5 Designed and engineered in California, CA.
Briggs & Stratton has a policy of continuous product improvement and reserves the right to modify its specifications at any time and without prior notice. Please visit energy.briggsandstrattoncom for the latest information.