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Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!
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Discover Energy HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor

Discover Energy HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor

SKU 52-48-16000
$5,600.00

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Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor

The Discover HELIOS ESS LiFePO4 Battery is a premium, high-capacity outdoor-rated energy storage system designed to deliver reliable power for residential and commercial applications. With 16.1 kWh of usable storage, a rugged IP65-rated outdoor enclosure, and advanced lithium iron phosphate (LiFePO4) chemistry, the HELIOS battery is perfect for whole-home backup, off-grid systems, or scalable hybrid solar configurations. It integrates seamlessly with leading inverter brands and is engineered for safe, efficient, and long-lasting operation in all climates.

Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor Features

High-Capacity Outdoor Energy Storage

16.1 kWh of usable capacity with 314 Ah of lithium power—ideal for whole-home backup or large solar installations.

51.2V LiFePO4 Chemistry

Safe, stable, and maintenance-free lithium iron phosphate cells deliver high cycle life and consistent energy performance.

Rugged IP65 Outdoor Enclosure

Designed for extreme weather conditions with a waterproof and dustproof shell—no need for indoor storage or additional protection.

Smart Integrated BMS

Monitors voltage, temperature, and charge levels in real time while protecting against overvoltage, short-circuit, and thermal events.

Compatible with Leading Inverters

Supports CAN/RS485 protocols for direct communication with hybrid and off-grid inverters including Sol-Ark, Schneider, Growatt, and more.

Scalable & Stackable

Add additional units in parallel to increase total storage capacity for residential, commercial, or microgrid applications.

 Placeholder Image

Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor Applications

  • Whole-home solar backup systems - Powers critical appliances and circuits during outages while seamlessly recharging from your solar array.
  • Off-grid homes and cabins - A reliable energy source in remote locations without grid access—perfect for full-time off-grid living.
  • Commercial and agricultural facilities - Supports backup and load shifting for businesses, barns, or greenhouses requiring consistent power.
  • Hybrid energy systems - Integrates with inverter systems for daily solar self-consumption, backup, or grid-assisted energy use.
  • Scalable residential battery banks - Expandable solution for homeowners planning long-term energy independence with multiple units.
 Placeholder Image

What's Included

Everything you need is included with your product.
  • Discover HELIOS ESS LiFePO4 Battery (16.1 kWh, 314Ah, Outdoor)
  • User Manual

Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor Specifications

ELECTRICAL SPECIFICATIONS
Category Specifications
Nominal Voltage 51.2 V
Energy 16,080 Wh
Nominal Capacity 314 Ah
Charge Bulk Voltage - Bulk Vdc 55.2 – 56.8 V
Charge Absorption Voltage - U1 MAX 55.2 – 56.8 V
Charge Float Voltage - U2 53.6 V
Charge Termination Current (a) 5 A
Low Voltage Disconnect Recommended 48 V
Low Voltage Disconnect (b) 43.2 V
Max Continuous Charge Current (c) 200 A
Max Continuous Discharge Current (c) 200 A
Peak Discharge Current (15 seconds) 300 A RMS
Self Discharge Current (operation) ≤ 25 mA
Self Discharge Current (battery OFF) ≤ 4 mA
Breaker Type Single-Pole (positive only) 200 A breaker (CVP-RH-P2BD5-D200-LT)
Maximum Short Circuit Fault Current (IBF / ½ IBF) 7.16 kA (100 ms) / 3.58 kA (100 ms)
Arc Flash Incident Energy IEm 0.310 Cal/cm²
Arc Flash Incident Energy AFB 239 mm (9.41 in)

MECHANICAL SPECIFICATIONS
Category Specifications
Height (A) 900 mm (35.43 in)
Width (B) 465 mm (18.31 in)
Depth - body only (C) 247 mm (9.72 in)
Depth (including Wall-Mount bracket) 271 mm (10.7 in)
Terminal Quick Connect Plug and Pull Terminal
Weight 136 kg (299.83 lb)
IP Rating IP65
Case Material Galvanized Steel Sheet
Certifications UN38.3, UL 1973, UL 9540A, UL 9540 DC ESS 3rd Edition (Pending)

Frequently-Asked Questions

Can this battery be installed outdoors without extra housing?

Yes. The HELIOS battery includes a fully weather-sealed, IP65-rated outdoor enclosure that protects it from dust, rain, snow, and extreme temperatures.

What inverters is it compatible with?

It supports CAN and RS485 communication protocols, making it compatible with most leading inverter brands such as Sol-Ark, Growatt, and Schneider.

Is it expandable?

Yes. Multiple HELIOS batteries can be connected in parallel to increase overall system capacity for larger storage needs.

Is there a heating function for sub-zero temperatures?

This model is built for outdoor durability but does not include internal heating. It is best used in environments above 0°C unless supplemental protection is provided.

Shipping is FREE on all orders to customers within the 48 Contiguous States and the District of Columbia. We do not ship to Alaska, Hawaii, or any outlying islands and territories.

Processing time for orders is 1 business day

Shipping time for orders is 4-5 business days


Want to know more about our Returns Policy? Read more here.

Want to know more about our Shipping Policy? Read more here.

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Krato Power.

  • Family Owned & Operated. Ask for Alex (Owner) at any time!
  • 4-5 Day Free Shipping with free liftgate service to the 48 Contiguous States and the District of Columbia. No extra charges. Ever
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30 Day Easy Returns. Not happy with your product, we'll take it back no questions asked.
  • Exceptional Customer Service. Check out our About Us page.
  • Call or Text Us - We are really here! (In the USA). 1-888-855-7286
Based on 12 reviews
75%
(9)
17%
(2)
8%
(1)
0%
(0)
0%
(0)
11
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Installed this to use with a generator that was not compatible with my victron multiplus. This allowed me to keep my generator and use it for a backup supply to charge my EG4 batteries. I did not like the fact that when you adjust the current limit the charger resets to 0 and then ramps up instead of just going to the new setpoint from where it currently is.

Thank you for a great product.

B
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Need more in depth instructions

Moe in depth instructions would be great, i had an issue with input voltage too high, charger sensed it and would not charge batteries. Also had no fault lights or anything. There are lights you can see on the diodes on the side of the charger that will tell you it's not happy. I Figured it out the hard way. Other than some early growing pains it works great

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All of our items are in stock and ready to ship. All items ship within 1 business day.

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30 Day Easy Return Policy

Price BEAT Guarantee

Found a better price? We will BEAT it!

Schedule a Consultation

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Description

Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor

The Discover HELIOS ESS LiFePO4 Battery is a premium, high-capacity outdoor-rated energy storage system designed to deliver reliable power for residential and commercial applications. With 16.1 kWh of usable storage, a rugged IP65-rated outdoor enclosure, and advanced lithium iron phosphate (LiFePO4) chemistry, the HELIOS battery is perfect for whole-home backup, off-grid systems, or scalable hybrid solar configurations. It integrates seamlessly with leading inverter brands and is engineered for safe, efficient, and long-lasting operation in all climates.

Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor Features

High-Capacity Outdoor Energy Storage

16.1 kWh of usable capacity with 314 Ah of lithium power—ideal for whole-home backup or large solar installations.

51.2V LiFePO4 Chemistry

Safe, stable, and maintenance-free lithium iron phosphate cells deliver high cycle life and consistent energy performance.

Rugged IP65 Outdoor Enclosure

Designed for extreme weather conditions with a waterproof and dustproof shell—no need for indoor storage or additional protection.

Smart Integrated BMS

Monitors voltage, temperature, and charge levels in real time while protecting against overvoltage, short-circuit, and thermal events.

Compatible with Leading Inverters

Supports CAN/RS485 protocols for direct communication with hybrid and off-grid inverters including Sol-Ark, Schneider, Growatt, and more.

Scalable & Stackable

Add additional units in parallel to increase total storage capacity for residential, commercial, or microgrid applications.

 Placeholder Image

Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor Applications

  • Whole-home solar backup systems - Powers critical appliances and circuits during outages while seamlessly recharging from your solar array.
  • Off-grid homes and cabins - A reliable energy source in remote locations without grid access—perfect for full-time off-grid living.
  • Commercial and agricultural facilities - Supports backup and load shifting for businesses, barns, or greenhouses requiring consistent power.
  • Hybrid energy systems - Integrates with inverter systems for daily solar self-consumption, backup, or grid-assisted energy use.
  • Scalable residential battery banks - Expandable solution for homeowners planning long-term energy independence with multiple units.
 Placeholder Image

What's Included

Everything you need is included with your product.
  • Discover HELIOS ESS LiFePO4 Battery (16.1 kWh, 314Ah, Outdoor)
  • User Manual

Discover HELIOS ESS LiFePO4 Battery 16.1 kWh 51.2V 314 Ah Outdoor Specifications

ELECTRICAL SPECIFICATIONS
Category Specifications
Nominal Voltage 51.2 V
Energy 16,080 Wh
Nominal Capacity 314 Ah
Charge Bulk Voltage - Bulk Vdc 55.2 – 56.8 V
Charge Absorption Voltage - U1 MAX 55.2 – 56.8 V
Charge Float Voltage - U2 53.6 V
Charge Termination Current (a) 5 A
Low Voltage Disconnect Recommended 48 V
Low Voltage Disconnect (b) 43.2 V
Max Continuous Charge Current (c) 200 A
Max Continuous Discharge Current (c) 200 A
Peak Discharge Current (15 seconds) 300 A RMS
Self Discharge Current (operation) ≤ 25 mA
Self Discharge Current (battery OFF) ≤ 4 mA
Breaker Type Single-Pole (positive only) 200 A breaker (CVP-RH-P2BD5-D200-LT)
Maximum Short Circuit Fault Current (IBF / ½ IBF) 7.16 kA (100 ms) / 3.58 kA (100 ms)
Arc Flash Incident Energy IEm 0.310 Cal/cm²
Arc Flash Incident Energy AFB 239 mm (9.41 in)

MECHANICAL SPECIFICATIONS
Category Specifications
Height (A) 900 mm (35.43 in)
Width (B) 465 mm (18.31 in)
Depth - body only (C) 247 mm (9.72 in)
Depth (including Wall-Mount bracket) 271 mm (10.7 in)
Terminal Quick Connect Plug and Pull Terminal
Weight 136 kg (299.83 lb)
IP Rating IP65
Case Material Galvanized Steel Sheet
Certifications UN38.3, UL 1973, UL 9540A, UL 9540 DC ESS 3rd Edition (Pending)

Frequently-Asked Questions

Can this battery be installed outdoors without extra housing?

Yes. The HELIOS battery includes a fully weather-sealed, IP65-rated outdoor enclosure that protects it from dust, rain, snow, and extreme temperatures.

What inverters is it compatible with?

It supports CAN and RS485 communication protocols, making it compatible with most leading inverter brands such as Sol-Ark, Growatt, and Schneider.

Is it expandable?

Yes. Multiple HELIOS batteries can be connected in parallel to increase overall system capacity for larger storage needs.

Is there a heating function for sub-zero temperatures?

This model is built for outdoor durability but does not include internal heating. It is best used in environments above 0°C unless supplemental protection is provided.

Shipping is FREE on all orders to customers within the 48 Contiguous States and the District of Columbia. We do not ship to Alaska, Hawaii, or any outlying islands and territories.

Processing time for orders is 1 business day

Shipping time for orders is 4-5 business days


Want to know more about our Returns Policy? Read more here.

Want to know more about our Shipping Policy? Read more here.

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Krato Power.

  • Family Owned & Operated. Ask for Alex (Owner) at any time!
  • 4-5 Day Free Shipping with free liftgate service to the 48 Contiguous States and the District of Columbia. No extra charges. Ever
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30 Day Easy Returns. Not happy with your product, we'll take it back no questions asked.
  • Exceptional Customer Service. Check out our About Us page.
  • Call or Text Us - We are really here! (In the USA). 1-888-855-7286