Outback Power EnergyCell 5.1kWh 48 Volt, Stackable Heated Lithium Battery Module
Outback Power EnergyCell 5.1kWh 48 Volt, Stackable Heated Lithium Battery Module
Description
The Outback Power EnergyCell 5.1 is a 48V, 5kW-rated lithium iron phosphate (LFP) battery module designed for scalable residential and commercial energy storage systems. With integrated heating, IP65 outdoor rating, and stackable architecture supporting up to 24 modules, this battery delivers long-term reliability and high-performance energy storage.
Outback Power EnergyCell 5.1kWh 48V Lithium Battery Features
5.12kWh Nominal Capacity – high-density LFP battery chemistry for stable performance
5kW Continuous Output – dependable charge and discharge capability
7.68kW Peak Power – 2-second surge handling for demanding loads
Integrated Heating – optimized performance in cold environments
IP65 Outdoor Rating – weather-resistant enclosure for indoor or outdoor use
Stackable Design – 3–8 modules per stack, up to 24 modules total
RS485 & CAN Communication – inverter and system integration ready
125A Internal Breaker – built-in battery protection
8000 Cycle Life – rated at 0.5C, 80% DoD, 25°C
10-Year Warranty – long-term manufacturer-backed support
Outback Power EnergyCell 5.1kWh 48V Lithium Battery Applications
- Residential Energy Storage – whole-home backup and solar self-consumption
- Commercial ESS Systems – scalable storage for higher load demands
- Hybrid Solar Installations – compatible with CAN/RS485 inverter systems
- Cold Climate Installations – integrated heating for low-temperature charging
- Outdoor Energy Storage – IP65-rated enclosure for exposed environments
What's Included
Everything you need is included with your product.
- 1 × EnergyCell 5 Battery Module
- 2 × Red & Black Power Cables (2 AWG, 6 ft / 180 mm each – 2 Red, 2 Black)
- 4 × Screws
- 4 × Expansion Anchors
- 2 × Wall Brackets
- 1 × Emergency Shutdown DI/DO Connector & Cable (59 in / 1500 mm)
- 1 × 120 Ω RJ45 Terminating Resistor
- 1 × Battery-to-Battery RJ45 Ethernet Communication Cable (8.5 ft / 2200 mm)
- 1 × Chassis Connector (Battery-to-Battery)
Product Specifications
Outback Power EnergyCell 5.1kWh 48 Volt, Stackable Heated Lithium Battery Module Product Specifications
| Specification | Value |
| Model Name | EC-FE5148 |
| Product Type | Low-voltage LFP battery pack |
| Battery Type | Lithium Iron Phosphate (LFP) |
| Nominal Energy Capacity | 100Ah |
| Nominal Voltage | 51.2Vdc |
| Voltage Range | 44.8–57Vdc |
| Usable Energy (DoD %) | 100% (80% recommended) |
| Continuous Charge/Discharge Power | 5kW (2.5kW recommended) |
| Peak Power (Duration) | 7.68kW (2 seconds) |
| Communication Protocols | RS485, CAN |
Electrical Characteristics
| Specification | Value |
| Charge Voltage Range | 56.0+/-0.8Vdc |
| Discharge Cut-off Voltage | 44.8Vdc |
| Max Continuous Charge Current | 100Adc (50Adc recommended) |
| Max Continuous Discharge Current | 100Adc (50Adc recommended) |
| Max Parallel Units | 24 EnergyCell 5 battery modules, 3 EnergyCell 5 control modules |
Protection Features
| Specification | Value |
| Recommended Charging/discharging rate | 0.5C |
| Short circuit protection | >250Adc for 0.1ms |
| Battery Breaker | 125Adc |
| Interrupt current rating | 10kA |
Other Specifications
| Specification | Value |
| Certifications and compliance | UL 1973, UL 9540 DC ESS (pending), UL9540A, UN 38.3 |
| Warranty and lifecycle | ≥8000 (0.5C@25°C, 80%DOD) 10 years |
| Cycle Life (80% capacity) | 8000 |
| Design Life | >10 years |
Product Manual
OutBack EnergyCell 5 – User Manual
OutBack EnergyCell 5 Integration
Product Warranty
Outback Power Warranty
How to Arrange for Warrant Services
During the warranty period beginning on the invoice date, OutBack Power will repair or replace products covered under this limited warranty that are returned to OutBack Power’ facility or to an OutBack Power authorized repair facility, or that are repaired on site by an OutBack Power authorized repair person.
Warranty Documentation
Click the following links for warranty documentation pertaining to your product
Limited Warranty
- English
EnergyCell 5
- English
FXR/VFXR A/E Series, Radian A/E Series, FLEXmax 60/80, FLEXmax 100, MATE3s, and any FLEXpower systems incorporating these models:
- English
OBX Extreme Series and other specialty or customized inverter/chargers:
- English / Spanish
- French / German
FX/VFX, Radian GS8048, FLEXmax Extreme, and any FLEXpower systems incorporating these models:
- English / Spanish
- French / German
MATE, MATE3, FLEXnet DC, AXS Port, all HUB products, Radian GS Load Centers, FLEXware products, autotransformers, combiners and all general “balance-of-system” (BOS) products:
- English
Mojave:
- English
Contacting OutBack
Troubleshooting
In the event of a product failure, the customer will need to work with an OutBack Technical Support representative to perform the necessary troubleshooting. This is a required step before a return can be performed. Troubleshooting requires a qualified technician to be present at the site of the product, with a quality voltmeter that measures both DC and AC. The OutBack representative will request voltmeter readings, product error messages, and other information. Many problems can be resolved onsite. If the customer is not willing or able to provide these readings (or is not willing or able to visit the site), and the product is found to have no problems upon return, OutBack may choose to charge additional labor and handling fees up to $180.00 USD.
Return Material Authorization (RMA)
A request for an RMA number requires all of the following information:
- Product model and serial number
- Proof-of-purchase in the form of a copy of the original Product purchase invoice or receipt confirming the Product model number and serial number
- Description of the problem
- Shipping address for the repaired or replacement equipment
Upon receiving this information, the OutBack representative can issue an RMA number.
Returning Product to OutBack
After receiving the RMA number, the customer must pack the product(s) authorized for return, along with a copy of the original purchase invoice and warranty certificate, in the original product shipping container(s) or packaging providing equivalent or reasonable protection. The RMA number must be written on the outside of the packaging where it is clearly visible.
If product is within the warranty period, OutBack will cover pre-paid shipping with prior arrangement.
The product(s) must be shipped back to OutBack Power in their original or equivalent packaging, to the following address:
OutBack Power
RMA # ____________________
400 Maple St
Commerce, TX 75428
United States
The customer must insure the shipment, or accept the risk of loss or damage during shipment. If a shipping box is needed for return of a product, OutBack will, upon request, send a shipping box.
IMPORTANT:
OutBack is not responsible for shipping damage caused by improperly packaged products, the repairs this damage might require, or the costs of these repairs.
If, upon receipt of the product, OutBack determines the product or product part is defective and that the defect is covered under the terms of this warranty, OutBack will then and only then ship a repaired or replacement product or product part to the purchaser freight prepaid, non-expedited, using a carrier of OutBack’s choice, when applicable.
If product fails in 90 days or fewer from the original purchase date, OutBack will replace with a new product. If product fails after 90 days and up to expiration of warranty, OutBack will, at its discretion, either repair and return a product, or ship a replacement product. OutBack will determine whether a product is to be repaired or replaced in accordance with product age and model. OutBack will authorize advance shipment of a replacement based on product age and model.
In cases where an OutBack dealer or distributor replaces a product more than 90 days old with a new product, OutBack will NOT compensate that dealer or distributor with new stock unless the exchange was authorized in advance by OutBack.
Out of Warranty
If product is out of warranty, OutBack will repair and return product for a fee. Alternately, if applicable, OutBack will advance-ship replacement parts for a fee upon request.
If a shipping box is needed for return of out-of-warranty product, OutBack will send a shipping box upon request. The customer is responsible for paying shipping to OutBack.
The warranty period of any repaired or replacement product or product part is 90 days from the date of shipment from OutBack, or the remainder of the initial warranty term, whichever is greater.
This warranty is void for any product that has been modified by the customer without authorization by OutBack. A product with a voided warranty will be treated the same as one with an expired warranty.
Product FAQs
Outback Power FAQs
How many modules can be stacked?
Up to 24 battery modules can be connected (3–8 per stack configuration).
Is this battery suitable for outdoor installation?
Yes. It is rated IP65 for outdoor use.
Does it include heating?
Yes. The module includes integrated heating for cold-temperature charging.
What is the cycle life?
Rated for 8000 cycles at 0.5C and 80% DoD.
Original: $2,300.00
-65%$2,300.00
$805.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Outback Power EnergyCell 5.1kWh 48 Volt, Stackable Heated Lithium Battery Module
Description
The Outback Power EnergyCell 5.1 is a 48V, 5kW-rated lithium iron phosphate (LFP) battery module designed for scalable residential and commercial energy storage systems. With integrated heating, IP65 outdoor rating, and stackable architecture supporting up to 24 modules, this battery delivers long-term reliability and high-performance energy storage.
Outback Power EnergyCell 5.1kWh 48V Lithium Battery Features
5.12kWh Nominal Capacity – high-density LFP battery chemistry for stable performance
5kW Continuous Output – dependable charge and discharge capability
7.68kW Peak Power – 2-second surge handling for demanding loads
Integrated Heating – optimized performance in cold environments
IP65 Outdoor Rating – weather-resistant enclosure for indoor or outdoor use
Stackable Design – 3–8 modules per stack, up to 24 modules total
RS485 & CAN Communication – inverter and system integration ready
125A Internal Breaker – built-in battery protection
8000 Cycle Life – rated at 0.5C, 80% DoD, 25°C
10-Year Warranty – long-term manufacturer-backed support
Outback Power EnergyCell 5.1kWh 48V Lithium Battery Applications
- Residential Energy Storage – whole-home backup and solar self-consumption
- Commercial ESS Systems – scalable storage for higher load demands
- Hybrid Solar Installations – compatible with CAN/RS485 inverter systems
- Cold Climate Installations – integrated heating for low-temperature charging
- Outdoor Energy Storage – IP65-rated enclosure for exposed environments
What's Included
Everything you need is included with your product.
- 1 × EnergyCell 5 Battery Module
- 2 × Red & Black Power Cables (2 AWG, 6 ft / 180 mm each – 2 Red, 2 Black)
- 4 × Screws
- 4 × Expansion Anchors
- 2 × Wall Brackets
- 1 × Emergency Shutdown DI/DO Connector & Cable (59 in / 1500 mm)
- 1 × 120 Ω RJ45 Terminating Resistor
- 1 × Battery-to-Battery RJ45 Ethernet Communication Cable (8.5 ft / 2200 mm)
- 1 × Chassis Connector (Battery-to-Battery)
Product Specifications
Outback Power EnergyCell 5.1kWh 48 Volt, Stackable Heated Lithium Battery Module Product Specifications
| Specification | Value |
| Model Name | EC-FE5148 |
| Product Type | Low-voltage LFP battery pack |
| Battery Type | Lithium Iron Phosphate (LFP) |
| Nominal Energy Capacity | 100Ah |
| Nominal Voltage | 51.2Vdc |
| Voltage Range | 44.8–57Vdc |
| Usable Energy (DoD %) | 100% (80% recommended) |
| Continuous Charge/Discharge Power | 5kW (2.5kW recommended) |
| Peak Power (Duration) | 7.68kW (2 seconds) |
| Communication Protocols | RS485, CAN |
Electrical Characteristics
| Specification | Value |
| Charge Voltage Range | 56.0+/-0.8Vdc |
| Discharge Cut-off Voltage | 44.8Vdc |
| Max Continuous Charge Current | 100Adc (50Adc recommended) |
| Max Continuous Discharge Current | 100Adc (50Adc recommended) |
| Max Parallel Units | 24 EnergyCell 5 battery modules, 3 EnergyCell 5 control modules |
Protection Features
| Specification | Value |
| Recommended Charging/discharging rate | 0.5C |
| Short circuit protection | >250Adc for 0.1ms |
| Battery Breaker | 125Adc |
| Interrupt current rating | 10kA |
Other Specifications
| Specification | Value |
| Certifications and compliance | UL 1973, UL 9540 DC ESS (pending), UL9540A, UN 38.3 |
| Warranty and lifecycle | ≥8000 (0.5C@25°C, 80%DOD) 10 years |
| Cycle Life (80% capacity) | 8000 |
| Design Life | >10 years |
Product Manual
OutBack EnergyCell 5 – User Manual
OutBack EnergyCell 5 Integration
Product Warranty
Outback Power Warranty
How to Arrange for Warrant Services
During the warranty period beginning on the invoice date, OutBack Power will repair or replace products covered under this limited warranty that are returned to OutBack Power’ facility or to an OutBack Power authorized repair facility, or that are repaired on site by an OutBack Power authorized repair person.
Warranty Documentation
Click the following links for warranty documentation pertaining to your product
Limited Warranty
- English
EnergyCell 5
- English
FXR/VFXR A/E Series, Radian A/E Series, FLEXmax 60/80, FLEXmax 100, MATE3s, and any FLEXpower systems incorporating these models:
- English
OBX Extreme Series and other specialty or customized inverter/chargers:
- English / Spanish
- French / German
FX/VFX, Radian GS8048, FLEXmax Extreme, and any FLEXpower systems incorporating these models:
- English / Spanish
- French / German
MATE, MATE3, FLEXnet DC, AXS Port, all HUB products, Radian GS Load Centers, FLEXware products, autotransformers, combiners and all general “balance-of-system” (BOS) products:
- English
Mojave:
- English
Contacting OutBack
Troubleshooting
In the event of a product failure, the customer will need to work with an OutBack Technical Support representative to perform the necessary troubleshooting. This is a required step before a return can be performed. Troubleshooting requires a qualified technician to be present at the site of the product, with a quality voltmeter that measures both DC and AC. The OutBack representative will request voltmeter readings, product error messages, and other information. Many problems can be resolved onsite. If the customer is not willing or able to provide these readings (or is not willing or able to visit the site), and the product is found to have no problems upon return, OutBack may choose to charge additional labor and handling fees up to $180.00 USD.
Return Material Authorization (RMA)
A request for an RMA number requires all of the following information:
- Product model and serial number
- Proof-of-purchase in the form of a copy of the original Product purchase invoice or receipt confirming the Product model number and serial number
- Description of the problem
- Shipping address for the repaired or replacement equipment
Upon receiving this information, the OutBack representative can issue an RMA number.
Returning Product to OutBack
After receiving the RMA number, the customer must pack the product(s) authorized for return, along with a copy of the original purchase invoice and warranty certificate, in the original product shipping container(s) or packaging providing equivalent or reasonable protection. The RMA number must be written on the outside of the packaging where it is clearly visible.
If product is within the warranty period, OutBack will cover pre-paid shipping with prior arrangement.
The product(s) must be shipped back to OutBack Power in their original or equivalent packaging, to the following address:
OutBack Power
RMA # ____________________
400 Maple St
Commerce, TX 75428
United States
The customer must insure the shipment, or accept the risk of loss or damage during shipment. If a shipping box is needed for return of a product, OutBack will, upon request, send a shipping box.
IMPORTANT:
OutBack is not responsible for shipping damage caused by improperly packaged products, the repairs this damage might require, or the costs of these repairs.
If, upon receipt of the product, OutBack determines the product or product part is defective and that the defect is covered under the terms of this warranty, OutBack will then and only then ship a repaired or replacement product or product part to the purchaser freight prepaid, non-expedited, using a carrier of OutBack’s choice, when applicable.
If product fails in 90 days or fewer from the original purchase date, OutBack will replace with a new product. If product fails after 90 days and up to expiration of warranty, OutBack will, at its discretion, either repair and return a product, or ship a replacement product. OutBack will determine whether a product is to be repaired or replaced in accordance with product age and model. OutBack will authorize advance shipment of a replacement based on product age and model.
In cases where an OutBack dealer or distributor replaces a product more than 90 days old with a new product, OutBack will NOT compensate that dealer or distributor with new stock unless the exchange was authorized in advance by OutBack.
Out of Warranty
If product is out of warranty, OutBack will repair and return product for a fee. Alternately, if applicable, OutBack will advance-ship replacement parts for a fee upon request.
If a shipping box is needed for return of out-of-warranty product, OutBack will send a shipping box upon request. The customer is responsible for paying shipping to OutBack.
The warranty period of any repaired or replacement product or product part is 90 days from the date of shipment from OutBack, or the remainder of the initial warranty term, whichever is greater.
This warranty is void for any product that has been modified by the customer without authorization by OutBack. A product with a voided warranty will be treated the same as one with an expired warranty.
Product FAQs
Outback Power FAQs
How many modules can be stacked?
Up to 24 battery modules can be connected (3–8 per stack configuration).
Is this battery suitable for outdoor installation?
Yes. It is rated IP65 for outdoor use.
Does it include heating?
Yes. The module includes integrated heating for cold-temperature charging.
What is the cycle life?
Rated for 8000 cycles at 0.5C and 80% DoD.
