Briggs & Stratton SimpliPHI™ 4.9kWh Battery Product Image

Briggs & Stratton SimpliPHI™ 4.9kWh Battery

Model Number: SPHI-B-4.9

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Delivering more efficient, safer and reliable energy storage the SimpliPHI 4.9 kWh Battery utilizes advanced Lithium Ferro Phosphate (LFP) chemistry. Designed and built with versatility in mind, the SimpliPHI 4.9 kWh Battery seamlessly integrates with all leading inverters, making it an ideal solution for battery replacement, expansion of existing systems or as a new installation. This leading-edge energy storage solution is also at the core of the SimpliPHI Energy Storage System: the most advanced, safety-certified ESS available for homes and businesses.

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Product Details



Long Battery Life

With 10,000 cycles at 80% depth of discharge (DoD) with a 96% round-trip efficiency, 26.8 MWh of energy throughout still maintaining 80% retained capacity.


Scalable for Any Energy Need

For longer duration storage so you have more on reserve when you need it, expanding up to 358 kWh.


Validated to Industry's Toughest Safety Standards

UL 1642, UL 1973, UN 3480 and UN DOT 38.3 certified.


LFP Battery Chemistry

Provides peace of mind that your batteries reduce cobalt mitigating the risk of thermal runaway with fire propagation.


Closed-loop Communication

Optimizing the inverter performance with ongoing feedback between the elements of the system.



No ventilation, cooling or thermal regulation required with a 10-year warranty1 so you know you are covered.


Versatile Installation Options

IP65 rating supports all weather conditions for both indoor or outdoor installations.


Flexible to Pair with Leading Inverters

Ready to be integrated with many inverters SimpliPHI, Sol-Ark and SMA. Other inverters pending. Easy to integrate into an existing system or a new installation.


Broad Operating Temperature

Ability to be used in a wide variety of temperature ranges.2


Proven Overcurrent Protection

Integrated BMS and 100A DC breaker on/off switch protects the battery from overcharge and discharge, increasing safety during installation and operation.

1See operator’s manual for complete warranty details.
2Max operating ranges. Refer to Installation Manual for recommended conditions.

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Briggs & Stratton SimpliPHI™ 4.9kWh Battery

Model Number SPHI-B-4.9
DC Voltages - Nominal 51.2 VDC
Amp-Hours 97 Ah
Rated kWh Capacity 4.9 kWh DC @ 100% DOD
3.9 kWh DC @ 80% DOD
MAX Surge Discharge Rate (10 Minutes) 100 Amps DC (5.1 kW DC)
MAX Continuous Discharge Rate 48.5 Amps DC (2.48 kW DC)
MAX Continuous Charge Rate 48.5 Amps DC (2.48 kW DC)
DC Voltage Range¹ 48 VDC to 56 VDC
Depth of Discharge¹ up to 100%
Charging Temperature¹ 32° to 120° F (0° to 49° C)
Operating Temperature¹ -4° to 140° F (-20° to 60° C)
Storage Temperature 6 months: 14° to 77° F (-10° to 25° C)
3 months: -4° to 113° F (-20° to 45° C)
Self-Discharge Rate < 1% per month (when off)
Cycle Life 10,000+ cycles (@ 80% DOD)
Memory Effect None
IP Rating IP65
Warranty 10 Years
Weight 160 lbs. (73 kg)
Dimensions (W x H x D) 23 x 28.5 x 8.5 in. (30” H w/terminals) / 3.2 ft3 (585 x 724 x 215.5 cm / 0.10 m3)
Wall Mount Dimensions (W x H x D) 17.5 x 22.69 x .95 in (444.5 x 576.2 x 24 mm)
Mounting Wall Mount Only
Efficiency Rating 96%
Communications CANBUS
Certifications UL 1642, UL 1973, UN 3480, UN DOT 38.3
Terminals 3/8 in (10 mm)
Battery Cables 4/0 Parallel Connections - Up to 4 batteries per string

1Max operating ranges. Refer to Installation Manual for recommended conditions.
*All specifications listed are typical/nominal and subject to change without notice.
**Engineered and Manufactured in California, USA
***BS1383 - 5/22

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