SimpliPHI® 6.6 Battery

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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.

6.6 Battery Product Support

Model Number:052015-01

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.

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.

Specifications

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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 Temperature
-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

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