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

BY: EG4 | SKU: EG4-LL-S12-400 x 2 Availability: In Stock

$3,199.90

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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!

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

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

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