EG4
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
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.