EG4 LL-S Lithium Battery | 48V 100AH | Server Rack Battery | UL1973, UL9540A – Available in 2–6 Unit Bundles

Name: EG4 LL-S Lithium Battery | 48V 100AH | Server Rack Battery | UL1973, UL9540A – Available in 2–6 Unit Bundles
Brand: EG4
SKU: EG4-LL-S48-100x2
Price: 2999.9 USD
Availability: OutOfStock

BY: EG4

SKU: EG4-LL-S48-100 x 2

| Availability: OUT OF STOCK

$3,299.00

$2,999.90

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Product Highlights

Built for home backup and off-grid power
5,120 Wh capacity for extended backup and off-grid runtime
Expandable design lets stored power grow with future needs
Rack-ready format simplifies modular battery-bank installation

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

EG4-LL lithium batteries offer second to none performance and longevity. Get peace of mind knowing our batteries are designed to last for more than 7000 deep charge and discharge cycles and have a life cycle of more than 15 years with an 80% depth of discharge daily.

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

On-board LCD Touch Screen

Easy to see BMS monitoring, and selectable closed-loop communications with EG4, Schneider, Sol-Ark, Victron, Growatt, Megarevo, Luxpower, and Deye inverters.

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.

Parallel up to 64 Batteries

For maximum power, our 6 DIP switch option allows you to have 327.6kWh while preserving BMS communications.

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

Off-Grid Solar Storage – Reliable energy for cabins and off-grid homes.
Grid-Tied Backup – Reduces energy costs and provides backup power during outages.
Whole-Home & Commercial Use – Supports critical loads and optimizes energy efficiency.
Server Rack & Industrial Power – Compact design for UPS and data center storage.
Emergency Backup – Ensures power for essential appliances and medical devices.

What's Included

Everything you need is included with your product.

(1) EG4-LL Battery Module
(1) Inter-battery Communication Cable
(1) ea. 5-AWG Pos. and Neg. Connection Cables

(4) M6-1.0 Terminal Bolts
User Manual

EG4 LL-S Lithium Battery Specifications

Module Operating Parameters

Category	Specifications
Voltage	51.2V
Capacity	100AH
Charging Voltage (Bulk/Absorb)	56.8V \| 56.2V (+/-0.2V)
Float	54V (+/-0.2V)
Low DC Cutoff	44.8V \| 47-45.6V (start high, lower as needed)
Charging Current	100A (Max. continuous) \| 30-50A
Discharging Current	100A (Max. continuous) \| 90A

Environmental Parameters

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

Charging/ Discharging Parameters (Charge)

Category	Specifications
Cell Voltage Protection	3.8V \| 1 sec \| 3.45V
Module Voltage Protection	60.0V \| 1 sec \| 55.2V
Over Charging Current 1	>102A \| 20 sec
Over Charging Current 2	>120A \| 3 sec
Temperature Protection	<23°F or >158°F <-5°C or >70°C \| 1 sec \| >32°F or <140°F >0°C or 60°C

Charging/ Discharging Parameters (Discharge)

Category	Specifications
Cell Voltage Protection	2.3V \| 1 sec \| 3.1V
Module Voltage Protection	44.8V \| 1 sec \| 48V
Over-Charging Current 1	>102A \| 30 sec \| 60 sec
Over-Charging Current 2	>150A \| 3 sec \| 60 sec
Short Circuit	>300A \| <0.1 mS
Temperature Protection	<-4°F or >167°F <-20°C or >75°C \| 1 sec \| >14°F or <149°F >-10°C or <65°C
PCB Temp Protection	>221°F (>105°C) \| 1 sec \| @ <176°F (<80°C)

General Specifications

Specifications	Details
Cell Balance	120mA \| Passive Balance \| Cell Voltage Difference >40mV
Temperature Accuracy	3% \| Cycle Measurement \| Measuring Range: 40°F ‒ 212°F (-4°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 Mode \| <25mA \| Charging/Discharging
Communication Ports	RS485/CAN \| Customizable
Maximum Modules in Series	1
Maximum Modules in Parallel	64
Dimensions (H×W×D)	6.1in×19in×17.4in (15.5cm×48.2cm×44.2cm)
Weight	99.6 lbs. (45.2 kg)
Module	ETL Listed to UL Standard 9540A:2019
Cell	UL:1973

Frequently-Asked Questions

Is the EG4 LL-S Lithium Battery compatible with all 48V inverters?

Yes! This battery is designed for seamless integration with most 48V inverters and solar energy systems.

Can I connect multiple batteries together for more storage?

Absolutely! The EG4 LL-S supports parallel connections, allowing users to expand their energy capacity as needed.

What safety certifications does this battery have?

The UL1973 and UL9540A certifications ensure safe operation, thermal stability, and fire resistance.

How long does this battery last?

With 10,000+ charge cycles, the battery is built to last over 10 years under normal usage.

Is this battery suitable for off-grid applications?

Yes! It is perfect for off-grid, hybrid, and grid-tied energy storage systems.

Manual

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

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Returns are 30 days from delivery. For freight deliveries, inspect the shipment before you sign for it. If something is damaged in transit, note it on the delivery receipt and we handle the freight claim, not you. Read more about our Returns Policy here.

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