EG4-LL-S Lithium Battery | 48V 100AH | Server Rack Battery | UL1973, UL9540A

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  • $2,175.00
  • Regular price $2,400.00
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Upgraded EG4-LL (Lifetime Lithium) Lithium Iron Phosphate battery 51.2V (48V) 5.12kWh with 100A internal BMS, based on the same subset features of the previous industry-renowned EG4-LL Battery. Fully Compatible with the previous EG4-LL Model(See below).

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 Schneider, Solark, Victron, Growatt, and EG4! A simple plug-and-play interface that has all the essentials built in for easy setup.

(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 Schneider, Solark, Victron, Growatt, 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 64 batteries
    • Get the most power possible! Up to 327.6kWh while maintaining BMS

  • Have existing V1 EG4-LL Batteries? Enable expanded communication for existing V1 EG4-LL Battery Banks by using a new V2 EG4-LL Battery as your master battery. This feature will be available with a firmware upgrade.

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 >250A <0.1mS

  • Temperature Protection

  • Operating Power Consumption  <25mA

Advanced Configurability

  • On-board LCD Screen

  • PC Monitoring Software

  • Lifetime firmware updates

Reliability & Safety Testing

  • Dual On-board Fire Arrestors

  • Environmentally Friendly & Lead-Free

  • Entire Battery UL Rated - Design Optimized and Tested by EG4's R&D Solar Laboratory. In-House & Texas Based

    • 1973 by UL
    • 9540A by Intertek

  • 10-Year Warranty Supported and serviced out of Texas

Enhanced Safety Features 

  • E-Stop functionality offers fail-safe operation in potentially high-risk environments. (requires either additional
    RSD/ESS disconnect or pairing with a supported rapid shutdown inverter in the system for e-stop functionality)
  • Dual On-Board fire arrestors allow for added peace of mind during operations. 



  • Nominal Voltage:51.2V
  • Nominal Capacity:100Ah
  • Kilowatt-hour(s):5.12kWh
  • Dimensions:17.7" x 19.3" x 6.1"
  • Design Life:+15 Years at 80% DoD
  • Weight: 99.6 lbs. (45.2 kg)