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



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Category: Product ID: 25356


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.
Included:(1) 1 foot RS485 Communication Cable and (1) Set of Parallel Cables per battery (1) RS485 USB Battery Comm Cable PER (6) BATTERIES (shipped separately)
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 rarehardware failure on high voltage solar charge controllers!
Parallel up to 16 batteries
Get the most power possible! Up to 80kWh while maintaining BMScommunications!
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 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


Nominal Voltage:                                                12.8V

Nominal Capacity:                                            400AHKilowatt-hour(s):5.12kWh

Dimensions:                                                       17.4″ x 18.5″ x 6.1″

Design Life:                                                       +15 Years at 80% DoD

Communications:                                            RS485/CAN: Victron, EG4


Spec Sheet:                                                      


BMS Software:                                                

Warranty Information

10-Year Full Parts Replacement or Full Product Replacement Prorated Warranty from the date of purchase.


The product that is purchased through the non-approved EG4 vendors is not covered under the warranty. A list of approved vendors can be found on our website. Reselling or removing the product from the original installation site will void the warranty.

Warranty Exclusions – EG4 Electronics has no obligation under this limited warranty for products subjected to the following conditions (including but not limited to):

1) Damages incurred during installation/reinstallation or removal
2) Poor workmanship performed by an individual, installer, or a firm
3) Damages caused by mishandling the product or inappropriate environmental exposure
4) Damages caused by improper maintenance or operating outside the specified operating conditions
5) Tampering, altering, and/or disassembly of the product
6) Using product in applications other than what the manufacturer intended
7) Lightning, fire, flood, earthquake, terrorism, riots, or acts of God.
8) Any product with a serial number that has been altered, defaced, or removed
9) Any unauthorized firmware updates/upgrades/patches
10) Damages incurred from a voltage or current spikes due to open-loop lithium battery communications

EG4 product warranty is a limited warranty – EG4 limits its liability in the event of a product defect to repair or replacement in accordance with the terms of this limited warranty. EG4 is not responsible for any additional or indirect damages that may arise from the malfunctioning of the product. These damages could be incidental or consequential, including without limitation, any liability for the loss of revenue, profits, or time. EG4 shall not be liable for any direct or indirect loss of life, including but not limited to bodily injury, illness, or death arising from the misuse or mishandling of the product, whether caused by negligence or otherwise.

Return policy: Contact the original approved place of purchase before contacting EG4 for your return needs.

If the original purchase is made through EG4, then please contact us at +1 903-609-1988. Returns are accepted on a case-by-case basis.

Warranty Claims Procedure: In the event of a warranty claim, contact our customer service team either through phone or email to request an RMA. The warranty claims can be initiated on our website
Contact Information: +1 903-609-1988
*1: The warranty period depends on the type of the product.

Inverters: 10 years on 18kPV, 3 years (5 years extended warranty with EG4 batteries) on 3k, 6k, 6.5k and 8k

Batteries: 10 years on LL, 5 years on LifePower (10 years extended when used with 18kPV), 5 years on waterproof, 5 years on indoor wallmount, 10 years on outdoor wallmount


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