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energy systems|SKU:83139691183059

Discover HELIOS ESS 16.1 kWh LiFePO4 Wallmount Battery

Reliable 16 kWh Outdoor Power Storage for Grid-Independent Living

16 kWh stored energy — Powers critical loads through extended outages
Battle-tested LiFePO4 chemistry — Maximum safety and cycle longevity
Modular scalable design — Grow your system as needs increase
Major inverter compatibility — Works with Sol-Ark, EG4, and Growatt
Remote monitoring built in — Real-time system insight from anywhere
  • Free Shipping -- Ships free to your door, no minimums

$3,115.95

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Discover Energy Systems HELIOS ESS 16.1 kWh 51.2V LiFePO4 Outdoor Wallmount Battery
Discover Energy Systems HELIOS ESS 16.1 kWh 51.2V LiFePO4 Outdoor Wallmount Battery
$3,115.95

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In the box

  • Discover HELIOS ESS 16.1 kWh Outdoor Wallmount Battery
Discover Energy Systems HELIOS ESS 16.1 kWh 51.2V LiFePO4 Outdoor Wallmount Battery
Discover HELIOS ESS 16.1 kWh LiFePO4 Wallmount Battery
$3,115.95

Reliable 16 kWh Outdoor Power Storage for Grid-Independent Living

The Discover Helios ESS delivers 16 kWh of off-grid proven energy storage in a 51.2V LiFePO4 wallmount design. Every unit is vetted for real-world performance, making it a smart investment for homes, commercial facilities, and remote cabins. Its intelligent BMS provides complete cell-level protection, while the modular architecture lets you scale as your power needs grow. This curated battery integrates with major inverter brands and includes remote monitoring for ongoing system insight. Ships free.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
LiFePO4 Chemistry
16 kWh Capacity
Intelligent BMS
Remote Monitoring
16 kWh
Usable Energy
51.2V
Nominal Voltage
314 Ah
Battery Capacity
Storage That Holds Up When Everything Depends On It

Storage That Holds Up When Everything Depends On It

The biggest risk with any battery investment is discovering it can't handle real conditions when the grid goes down. The Discover Helios ESS eliminates that fear through lithium iron phosphate chemistry, engineered for thermal stability and thousands of charge cycles. An intelligent Battery Management System monitors each cell individually, guarding against over-charging, over-discharging, short circuits, and extreme temperature exposure. This curated combination means the Helios doesn't just store power — it protects your investment by ensuring every cell performs reliably for years, not months. Off Grid Vault trusts this unit specifically because it answers the question that matters: will it deliver when you need it most.

Scale Your System Without Starting Over

Scale Your System Without Starting Over

The Helios ESS uses a modular architecture that lets you add capacity as your power demands grow. Starting with 16 kWh at 51.2V and 314 Ah, you're not locked into a fixed configuration. Whether you're powering a remote cabin today or expanding to cover a full homestead tomorrow, the scalable design adapts to your situation. This flexibility respects your investment because you buy what you need now and expand later without replacing core components. Remote monitoring capability gives you real-time visibility into charge levels, cell health, and system performance from anywhere, so you're never guessing about your power reserves.

Drop-In Compatibility With Proven Inverter Platforms

Drop-In Compatibility With Proven Inverter Platforms

Integration headaches stop here. The Discover Helios ESS connects directly with Sol-Ark, EG4, and Growatt hybrid inverters — the same brands trusted across the off-grid and backup power community. Its 51.2V nominal voltage and 55.2–56.8V charge voltage range align with standard 48V system architecture, so your existing inverter recognizes it without custom programming or workaround cables. This vetted compatibility means faster installation, fewer points of failure, and a system that works together as a unified power platform rather than a collection of mismatched components. Off Grid Vault selected this battery precisely because it integrates cleanly with the equipment independence builders already trust.

Compatibility Check

Make sure this battery fits your system before you buy.

  • System operates on a 48V configuration
  • Inverter supports LiFePO4 battery chemistry
  • Mounting location is rated for outdoor exposure

Built For

Designed to handle demanding energy storage scenarios.

Residential Solar Backup
Commercial Energy Storage
Off-Grid Cabin Power

Full specifications

At a glance

Dimensions
See product page
Power
51.2 V
Warranty
See product page
Full specifications7 data points across 4 categories

Dimensions

DimensionsSee product page

Power & Performance

Nominal Voltage51.2 V
Energy Capacity16 kWh
Configuration48 V
Capacity314 Ah

Materials

ChemistryLithium iron phosphate (LiFePO4)

Compliance & Warranty

WarrantySee product page

The Off Grid Vault Promise

Every product we carry earns its place on our shelves.

Vetted PerformanceEach battery is evaluated for real-world output, build quality, and long-term reliability before we list it.
Free ShippingThis battery ships free to your door — no minimums, no fine print.
30-Day ReturnsNot the right fit? Return it within 30 days for a hassle-free refund.
★★★★★
“I installed the Helios ESS alongside my EG4 inverter about four months ago. Setup was straightforward — the inverter recognized it immediately, no calibration headaches. We've since gone through two grid outages, and the battery held up exactly as advertised. The remote monitoring is genuinely useful; I check cell balance and charge status from my phone daily. This is real storage, not a toy. Glad I found Off Grid Vault's vetted selection instead of guessing on my own.”
F
First L.Boise, ID

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

The Discover Helios 52-48-16000 Energy Storage System is a robust 48-volt LiFePO4 battery built for homes, commercial facilities, and off-grid power solutions. With 16 kWh of usable energy, it delivers consistent, long-duration performance while leveraging lithium iron phosphate technology for enhanced safety, efficiency, and longevity.

Its flexible, modular layout allows the system to scale as your power requirements increase. A built-in Battery Management System carefully oversees each cell, maintaining optimal performance and providing protection from over-charging, over-discharging, short circuits, and extreme temperatures. Designed to integrate smoothly with popular hybrid inverter brands—including Sol-Ark, EG4, and Growatt—the Helios ESS offers straightforward setup and dependable operation across a wide range of renewable-energy applications.


HELIOS ESS 16.1 kWh Outdoor Wallmount Battery Specs & Features

  • 16 kWh nominal capacity in a 48 V configuration
  • Modular and scalable design for flexible system sizing
  • Lithium iron phosphate (LiFePO4) chemistry for maximum safety and longevity
  • Intelligent BMS with complete protection and optimization controls
  • Compatible with major inverter brands for versatile applications
  • Remote monitoring capability for real-time system insight
  • Nominal Voltage: 51.2 V
  • Energy Capacity: 16 kWh
  • Nominal Capacity: 314 Ah
  • Charge Voltage: 55.2 – 56.8 V
  • Maximum Continuous Charge Current: 200 A
  • Maximum Continuous Discharge Current: 200 A
  • Battery Chemistry: LiFePO₄
  • Terminal Type: Quick-Connect Plug-and-Pull
  • Weight: 299.83 lbs
  • Dimensions (L × W × H): 35.43 × 18.31 × 9.72 in


Your Satisfaction with Discover Energy Systems is Guaranteed:

  • 5-Year Limited Warranty
  • Lowest Price Guarantee

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SKU: 83139691183059 Category: Brand:

The Off Grid Vault Promise

Every product we carry earns its place on our shelves.

Vetted Performance Each battery is evaluated for real-world output, build quality, and long-term reliability before we list it.
Free Shipping This battery ships free to your door — no minimums, no fine print.
30-Day Returns Not the right fit? Return it within 30 days for a hassle-free refund.

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