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EG4 LL Lithium Battery (V2) 12V 400AH | Server Rack Battery – Available in 2–6 Unit Bundles

EG4 LL Lithium Battery (V2) 12V 400AH | Server Rack Battery – Available in 2–6 Unit Bundles

SKU EG4-LL-S12-400 x 2
$3,199.90
Battery Quantity

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EG4 LL Lithium Battery (V2) 12V 400AH | Server Rack Battery

Upgraded EG4-LL (Lifetime Lithium) Lithium Iron Phosphate battery 12.8V (12V) 5.12kWh with 200A internal BMS, based on the same subset features of the previous industry renowned EG4-LL Battery.

Composed of (16) UL listed prismatic 3.2V cells which have been tested at 7,000 deep discharge cycles to 80% DoD - fully charge and discharge this battery daily for over 15 years without issue. Reliable and rigorously tested, with a 99% operating efficiency.

Includes an LCD screen to quickly view your batteries' most important information, but now features Selectable closed-loop inverter communications including Victron, and EG4! A simple plug-and-play interface that has all the essentials built in for easy setup.

EG4 Lifetime Lithium, Best In Class Solar Rack Battery

  • Rated for 7000 deep charge & discharge cycles / 15-year life with 80% depth of discharge daily, designed for up to 20-year life
  • Tier One, A+ Cell Composition, 99% Efficiency LiFePo4 16-Cell Pack
  • #1 Energy Density Server Rack Battery Form Factor
  • Selectable closed-loop inverter communications including Victron, and EG4!
  • Dual Onboard automatic fire arrestors / Failsafe operation in high-risk environments and to protect against rare hardware failure on high voltage solar charge controllers!
  • Parallel up to 16 batteries / Get the most power possible! Up to 80kWh while maintaining BMS
  • communications!
 Placeholder Image


Performance Components

  • Reliable Built-In EG4 Smart BMS, Voltage, Current, Temp. and Health Management
  • Stress-Free Battery Bank Expansion Capacity
  • Cell & Module Voltage Protection
  • Short Circuit Protection >775A <0.1mS
  • Temperature Protection <-4°F or >167°F
  • Operating Power Consumption <14mA

Advanced Configurability

  • On-board LCD Screen
  • PC Monitoring Software
  • Lifetime firmware updates

Reliability & Safety Testing

  • Dual On-board Fire Arrestors
  • Environmentally Friendly & Lead-Free
  • Design Optimized and Tested by EG4's R&D Solar Laboratory. In-House & Texas Based
  • 10-Year Warranty Supported and serviced out of Texas
 Placeholder Image

What's Included

Everything you need is included with your product.
  • (1) EG4-LL battery module
  • (1) Battery Parallel Cable
  • (1) Battery to PC USB Cable
  • (1) Positive & (1) Negative Power Cable
  • (2) M8-1.25 Terminal Bolts
  • User Manual

EG4 LL Lithium Battery (V2) 12V 400AH | Server Rack Battery Specifications

MODULE OPERATING PARAMETERS
Category Specifications
Voltage 12.8V
Capacity 400Ah
Charging Voltage (Bulk/Absorb) 14.0V (+/-0.2V)
Float 13.5V (+/-0.2V)
Low DC Cutoff 1.8 – 11.4V (depending on load – start high, lower if needed)
Charging Current 100A (Max. Continuous)
Discharging Current 100A (Max. Continuous)

ENVIRONMENTAL PARAMETERS
Category Specifications
Charging Range 32°F - 113°F (0°C to 45°C)
Discharging Range -4°F - 122°F (-20°C - 50°C)
Storage Range -4°F - 122°F (-20°C - 50°C)
Ingress Protection IP20

BMS PARAMETERS
Category Specifications
Cell Voltage Protection 3.8V | 1s | 3.45V
Module Voltage Protection 15.0V | 1s | 13.8V
Over Charging Current 1 >220A | 10s
Over Charging Current 2 ≥250A | 3s
Temperature Protection <23°F or >167°F <-5°C or >75°C | 1s | <41°F or >149°F >5°C or 65°C

DISCHARGE
Category Specifications
Cell Voltage Protection 2.3V | 1s | 3.1V
Module Voltage Protection 9.6V | 1s | 12.0V
Over Charging Current 1 >220A | 30s | 60s
Over Charging Current 2 >380A | 3s | 60s
Short-Circuit >775A | <0.1mS
Temperature Protection <-4°F or >167°F <-20°C or >75°C | 1s | >14°F or <149°F >-10°C or <65°C
PCB Temp Protection >221°F (>105°C) | 1s | <176°F (<80°C)

GENERAL SPECIFICATIONS
Category Specifications
Cell Balance 100mA | Passive Balance | Cell Voltage Difference >40mV
Temperature Accuracy 3% | Cycle Measurement | Measuring Range -40°F ‒ 212°F (-40°C ‒ 100°C)
Voltage Accuracy 0.5% | Cycle Measurement | For Cells/Module
Current Accuracy 3% | Cycle Measurement | Measurement Range +/-200A
SOC 5% - Integral Calculation
Power Consumption (Sleep & Off Mode) <300uA - Storage/Transport/ Standby
Power Consumption (Operating) <14mA - Charging/Discharging
Communication Ports RS485/CAN | Customizable
Bluetooth Monitoring Customized EG4 App
Maximum Modules in Parallel 16
Dimension (H×W×D) 6.1 in×19 in×20.2 in (15.5 cm×48.2 cm×51.3 cm)
Weight 98.1 lbs. (44.5 kg)

Frequently-Asked Questions

Can I connect multiple batteries together for more storage?

Yes! The EG4 LL Lithium Battery V2 supports both parallel and series connections, allowing users to expand their energy storage capacity.

What type of battery chemistry does this use?

This battery uses LiFePO4 (Lithium Iron Phosphate), known for its long lifespan, safety, and high efficiency.

Is this battery compatible with my existing solar inverter?

The EG4 LL Lithium Battery V2 is compatible with most 12V inverters and solar charge controllers.

How long does this battery last?

With 10,000+ charge cycles, this battery can last 10+ years under normal usage.

Can this battery be used in a grid-tied solar system?

Yes! It works well for off-grid and grid-tied battery backup applications.

Manual

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%
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Description

EG4 LL Lithium Battery (V2) 12V 400AH | Server Rack Battery

Upgraded EG4-LL (Lifetime Lithium) Lithium Iron Phosphate battery 12.8V (12V) 5.12kWh with 200A internal BMS, based on the same subset features of the previous industry renowned EG4-LL Battery.

Composed of (16) UL listed prismatic 3.2V cells which have been tested at 7,000 deep discharge cycles to 80% DoD - fully charge and discharge this battery daily for over 15 years without issue. Reliable and rigorously tested, with a 99% operating efficiency.

Includes an LCD screen to quickly view your batteries' most important information, but now features Selectable closed-loop inverter communications including Victron, and EG4! A simple plug-and-play interface that has all the essentials built in for easy setup.

EG4 Lifetime Lithium, Best In Class Solar Rack Battery

  • Rated for 7000 deep charge & discharge cycles / 15-year life with 80% depth of discharge daily, designed for up to 20-year life
  • Tier One, A+ Cell Composition, 99% Efficiency LiFePo4 16-Cell Pack
  • #1 Energy Density Server Rack Battery Form Factor
  • Selectable closed-loop inverter communications including Victron, and EG4!
  • Dual Onboard automatic fire arrestors / Failsafe operation in high-risk environments and to protect against rare hardware failure on high voltage solar charge controllers!
  • Parallel up to 16 batteries / Get the most power possible! Up to 80kWh while maintaining BMS
  • communications!
 Placeholder Image


Performance Components

  • Reliable Built-In EG4 Smart BMS, Voltage, Current, Temp. and Health Management
  • Stress-Free Battery Bank Expansion Capacity
  • Cell & Module Voltage Protection
  • Short Circuit Protection >775A <0.1mS
  • Temperature Protection <-4°F or >167°F
  • Operating Power Consumption <14mA

Advanced Configurability

  • On-board LCD Screen
  • PC Monitoring Software
  • Lifetime firmware updates

Reliability & Safety Testing

  • Dual On-board Fire Arrestors
  • Environmentally Friendly & Lead-Free
  • Design Optimized and Tested by EG4's R&D Solar Laboratory. In-House & Texas Based
  • 10-Year Warranty Supported and serviced out of Texas
 Placeholder Image

What's Included

Everything you need is included with your product.
  • (1) EG4-LL battery module
  • (1) Battery Parallel Cable
  • (1) Battery to PC USB Cable
  • (1) Positive & (1) Negative Power Cable
  • (2) M8-1.25 Terminal Bolts
  • User Manual

EG4 LL Lithium Battery (V2) 12V 400AH | Server Rack Battery Specifications

MODULE OPERATING PARAMETERS
Category Specifications
Voltage 12.8V
Capacity 400Ah
Charging Voltage (Bulk/Absorb) 14.0V (+/-0.2V)
Float 13.5V (+/-0.2V)
Low DC Cutoff 1.8 – 11.4V (depending on load – start high, lower if needed)
Charging Current 100A (Max. Continuous)
Discharging Current 100A (Max. Continuous)

ENVIRONMENTAL PARAMETERS
Category Specifications
Charging Range 32°F - 113°F (0°C to 45°C)
Discharging Range -4°F - 122°F (-20°C - 50°C)
Storage Range -4°F - 122°F (-20°C - 50°C)
Ingress Protection IP20

BMS PARAMETERS
Category Specifications
Cell Voltage Protection 3.8V | 1s | 3.45V
Module Voltage Protection 15.0V | 1s | 13.8V
Over Charging Current 1 >220A | 10s
Over Charging Current 2 ≥250A | 3s
Temperature Protection <23°F or >167°F <-5°C or >75°C | 1s | <41°F or >149°F >5°C or 65°C

DISCHARGE
Category Specifications
Cell Voltage Protection 2.3V | 1s | 3.1V
Module Voltage Protection 9.6V | 1s | 12.0V
Over Charging Current 1 >220A | 30s | 60s
Over Charging Current 2 >380A | 3s | 60s
Short-Circuit >775A | <0.1mS
Temperature Protection <-4°F or >167°F <-20°C or >75°C | 1s | >14°F or <149°F >-10°C or <65°C
PCB Temp Protection >221°F (>105°C) | 1s | <176°F (<80°C)

GENERAL SPECIFICATIONS
Category Specifications
Cell Balance 100mA | Passive Balance | Cell Voltage Difference >40mV
Temperature Accuracy 3% | Cycle Measurement | Measuring Range -40°F ‒ 212°F (-40°C ‒ 100°C)
Voltage Accuracy 0.5% | Cycle Measurement | For Cells/Module
Current Accuracy 3% | Cycle Measurement | Measurement Range +/-200A
SOC 5% - Integral Calculation
Power Consumption (Sleep & Off Mode) <300uA - Storage/Transport/ Standby
Power Consumption (Operating) <14mA - Charging/Discharging
Communication Ports RS485/CAN | Customizable
Bluetooth Monitoring Customized EG4 App
Maximum Modules in Parallel 16
Dimension (H×W×D) 6.1 in×19 in×20.2 in (15.5 cm×48.2 cm×51.3 cm)
Weight 98.1 lbs. (44.5 kg)

Frequently-Asked Questions

Can I connect multiple batteries together for more storage?

Yes! The EG4 LL Lithium Battery V2 supports both parallel and series connections, allowing users to expand their energy storage capacity.

What type of battery chemistry does this use?

This battery uses LiFePO4 (Lithium Iron Phosphate), known for its long lifespan, safety, and high efficiency.

Is this battery compatible with my existing solar inverter?

The EG4 LL Lithium Battery V2 is compatible with most 12V inverters and solar charge controllers.

How long does this battery last?

With 10,000+ charge cycles, this battery can last 10+ years under normal usage.

Can this battery be used in a grid-tied solar system?

Yes! It works well for off-grid and grid-tied battery backup applications.

Manual

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