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SimpliPHI™ 4.98kWh ESS Battery

SimpliPHI™ 4.98kWh ESS Battery

Regular price $4,750.00 USD
Regular price Sale price $4,750.00 USD
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backupThe SimpliPHI 4.98 kWh Battery utilizes advanced Lithium Ferro Phosphate (LFP) chemistry to deliver more efficient, safer and reliable energy storage. Designed and built with versatility in mind, the SimpliPHI 4.98 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 power storage solution is also at the core of the Energy Storage System (ESS): the most advanced, safety- certified ESS available for homes and businesses.

Long battery life                                    

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

Scalable for any energy need

Battery can scale to allow for expansion up to  358 kWh for longer-duration storage.

Flexible to pair with leading inverters Ready to be integrated with SimpliPHI, Sol-Ark  and SMA. Other inverters pending.

LFP battery chemistry

Provides peace of mind by reducing cobalt, risk of thermal runaway with fire propagation, operating temperature constraints and toxic coolants.

Broad operating temperature

Ability to be used in a variety of temperature ranges.


No ventilation, cooling or thermal regulation required; 10-year limited warranty (see operator’s manual or for complete warranty details).

Versatile installation options

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

Validated to industry's toughest  safety standards      

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

Closed-loop communication

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

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.


Battery Specifications


Model Number


DC Voltage – Nominal

51.2 VDC


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


IP Rating



10 years


Wall mount only

Efficiency Rating





UL 1642, UL 1973, 

UN 3480 and UN DOT 38.3

Product Dimensions


Dimensions (W x H x D)

23 x 28.5 x 8.5 in (30 in H w/terminals) / 

3.2 ft3 (584 x 724 x 215.5 mm / 0.10 m3)


160 lb (73 kg)

Wall Mount  Dimensions (W x H x D)

17.5 x 22.69 x .95 in (444.5 x 576.2 x 24 mm)



Data Sheet

Click here for data sheet

Shipping & Returns

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The standard returns policy applies to this product (available at the end of the page)


92 x 135 x 27 mm

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