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Discover Energy Systems HELIOS ESS Battery | 16.1 kWh Capacity 51.2V 314 Ah | Outdoor Wallmount LiFePO4 Battery
Batteries

Discover Energy Systems HELIOS ESS Battery | 16.1 kWh Capacity 51.2V 314 Ah | Outdoor Wallmount LiFePO4 Battery

$3,299.00$4,299.00Save $1,000.00
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Discover Energy Systems HELIOS ESS Battery | 16.1 kWh Capacity | 51.2V | 314 Ah | Outdoor Wallmount LiFePO4 Battery

With 16kWh of usable LiFePO4 capacity, self-heating technology, and an IP65-rated enclosure, Discover Helios ESS battery delivers reliable whole-home backup and off-grid solar storage—no matter the season or installation environment.

  • All-Climate Self-Heating
  • Modular and Scalable Design
  • 4th-Gen BMS with Advanced Safety

About the Product

The Discover Helios ESS (52-48-16000) is a 16kWh lithium iron phosphate energy storage system engineered for residential off-grid solar setups, whole-home backup applications, and microgrid installations.

What sets the Helios ESS battery apart in real-world conditions is its all-climate design. The IP65-rated, weather-resistant enclosure handles outdoor installation without compromise, while the built-in self-heating system activates automatically between -13°F and 46.4°F. This keeps cells in their safe operating range even through harsh winters.

Performance figures are equally strong. The system delivers 10kW of continuous power with up to 19kW peak for 10 seconds, backed by 93 MWh of lifetime energy throughput. The 4th-generation Battery Management System provides comprehensive overvoltage, overcurrent, and thermal protection. Moreover, the dual fire arrestors and emergency stop functionality support Rapid Shutdown (RSD) integration for code-compliant installations.

For installers, the quick-connect wall-mount bracket simplifies setup, and closed-loop CAN communication enables seamless integration with compatible hybrid and off-grid inverters, including Sol-Ark 15K hybrid inverter via a dedicated conduit box. As a scalable and flexible lithium battery system, the Helios ESS battery supports up to 48 kWh with battery to battery parallel installations, or up to 36 modules (579.6kWh) in parallel with closed-loop communication.

Specifications

Type

Lithium Iron Phosphate (LiFePO4)

Nominal Voltage

51.2V

Nominal Capacity

314 Ah

Energy

16,080 Wh (16.1 kWh)

Operating Voltage

43.2V – 56.8V

Communication Interfaces

CAN (closed-loop with supported inverters)

Scalable

Up to 48 kWh with battery to battery parallel

installations

Up to 36 modules (579.6kWh) in parallel with closed-loop communication

Nominal Charging Current

200A

Nominal Discharging Current

200A

Max. Discharging Current

300A RMS (15-second peak)

Environment

Outdoor

Charging Temperature

-13°F to 131°F (self-heating: -13°F to 46.4°F)

Discharging Temperature

-13°F to 131°F

Storage Temperature

14°F to 113°F

Altitude

Maximum 6,561 ft (2,000m)

IP Rating

IP65

Dimensions

35.43 x 18.31 x 9.72 in (body) / 10.7 in depth with bracket

Weight

299.83 lbs (136 kg)

Installation

Wall mount (bracket included)

 

Download full specifications here.

Download installation manual here.

Download Purchasing Guide here.

Download the Conduit Box Manual here.

Download the Lynk Cloud Setup Guide here.

Download the warranty here.

Free shipping

On orders over $199

Free returns

30-day hassle-free

5-year warranty

Included with every unit

4.9

Based on +560 Google reviews

Verified businessRead all reviews
MA

Michael “Al” Remes

3 months ago

“The experience with 8M Solar is one I would recommend to anyone looking to invest in offsetting their energy costs without the headache of dealing with the local utility companies. Their pricing and consumer experience are unmatched among their competitors.”

Posted on Google · Verified review

BA

Bob Alsip

a month ago

“8MSolar stood out at the top with the best price for the Tesla Powerwall 3 as well as the panels. The quality of installation was superb — conduits run perfectly in alignment, clean bends, and wiring that was some of the best I have seen.”

Posted on Google · Verified review

KS

Kamesh Surabhi

2 months ago

“I had an excellent experience with 8M Solar from start to finish. The crew arrived on time, worked efficiently, and completed the job with great attention to detail. The system is performing exactly as promised.”

Posted on Google · Verified review

MF

Mike Fitzsimmons

4 months ago

“8M was always very responsive and helpful navigating a process that once seemed overwhelming. The install went smoothly and was accomplished all in one day. So far we're super happy with the panels, Powerwall 3 and generation.”

Posted on Google · Verified review

N

NEN

3 weeks ago

“Professional, knowledgeable and responsive throughout the entire process and even after installation. Their attention to detail and commitment to customer satisfaction exceeded my expectations. Highly recommend.”

Posted on Google · Verified review

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