Description
Eastman 11.77kWh Lithium Battery Overview
High-Capacity Storage: 11.77kWh usable energy at 51.2V nominal voltage—ideal for whole-home backup, large households, or light commercial applications .
Wall-Mount Design: Space-saving vertical installation with included wall bracket frees up floor space while providing a clean, professional appearance .
Advanced LiFePO₄ Chemistry: Utilizes safe, long-life lithium iron phosphate battery cells with exceptional thermal stability and over 6,000 cycles at 80% depth of discharge .
Scalable Parallel Capability: Support up to 15 independent modules in parallel, allowing system expansion from 11.77kWh to over 176kWh as your energy needs grow .
Smart Battery Management: Advanced BMS with comprehensive protection against overcharge, deep discharge, short circuit, and temperature extremes .
Real-Time Monitoring: External color touch screen and LED indicators for instant visibility of battery status and performance metrics .
Multiple Communication Options: RS232, RS485, and CAN interfaces enable seamless communication with inverters and remote monitoring systems .
Intelligent Active Cooling: Scientific heat dissipation system maintains internal temperature consistency, prolonging service life and enabling continuous high-current output .
Eastman 11.77kWh Lithium Battery Technical Specifications
| Component | Specification |
|---|---|
| Model | ES51.2-230LP |
| Nominal Energy | 11.77 kWh |
| Nominal Voltage | 51.2V |
| Battery Capacity | 230Ah |
| Charge Voltage | 58.4V |
| Discharge Cut-off Voltage | 42V |
| Operating Voltage Range | 44V – 58.4V |
| Standard Charging Current | 46A |
| Max Continuous Charging Current | 200A |
| Max Continuous Discharging Current | 200A |
| Recommended Discharging Current | 70-80A |
| Peak Discharge Current (10 sec) | 230A |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Cycle Life | >6,000 cycles at 80% DoD, 25°C |
| Communication Interfaces | RS232 / RS485 / CAN |
| Parallel Capability | Up to 15 modules |
| Display | Color touch screen + 6-LED SOC indicator |
| Dimensions (L x W x H) | 450 mm x 245 mm x 750 mm |
| Net Weight | Approximately 93 kg |
| Installation | Wall-mounted (bracket included) or floor-mounted |
| Operating Temperature (Charge) | 0°C to 60°C |
| Operating Temperature (Discharge) | -10°C to 65°C |
| Cooling System | Intelligent active air cooling / active heat dissipation |
| Enclosure Material | Metal (GI) |
| Terminals | M6/M8 Positive (2pcs), M6/M8 Negative (2pcs) |
Key Features Explained
Advanced LiFePO₄ Technology
The Eastman ES51.2-230LP employs high-performance lithium iron phosphate battery cells as the fundamental energy storage unit. LiFePO₄ chemistry offers superior safety characteristics, exceptional thermal stability, and over 6,000 cycles at 80% depth of discharge—providing 10+ years of reliable service in daily solar applications .
Wall-Mount Design
Unlike traditional floor-standing batteries, the ES51.2-230LP features an integrated wall bracket that mounts securely to any load-bearing wall . This design:
Frees up valuable floor space in utility rooms and garages
Provides a clean, professional installation appearance
Keeps the battery at accessible height for monitoring and maintenance
Includes handles for easier positioning during installation
Intelligent Thermal Management
Through scientific and reasonable active heat dissipation, the system improves internal temperature field consistency. This extends battery service life and enables continuous high-current output when your home demands more power .
Comprehensive Monitoring
The external color touch screen provides real-time visibility into battery performance . Six LED indicators show approximate state of charge (SOC), with each LED representing about 17% capacity . For detailed monitoring, the communication ports allow connection to computers or inverters.
Flexible Communication Options
RS485/CAN Interface: Connects directly to inverters, allowing the inverter to monitor battery voltage, current, temperature, SOC, SOH, and status
RS232 Interface: Enables single-pack monitoring via computer
RS485 Daisy Chain: Used when paralleling multiple batteries—the master pack communicates with slave packs, and all information is accessible through the master’s RS485/CAN port
Scalable Power Architecture
Starting from 11.77kWh, the system can be expanded by adding up to 15 parallel modules . Each module requires a unique hardware address set via DIP switches . This modular approach lets you start with the capacity you need today and grow as your energy requirements increase.
Multiple Protection Functions
The advanced BMS provides comprehensive protection :
Overcharge protection
Deep discharge protection
Cell over/under voltage protection
Over current protection (charge/discharge)
Short circuit protection
Temperature protection
Applications
Whole-Home Energy Storage: Store solar power for nighttime use, reducing grid dependence and electricity bills for large households .
Backup Power: Keep essential loads and whole-home circuits running during extended grid outages .
Off-Grid Homes: Complete energy independence for properties without grid access .
Peak Shaving: Reduce demand charges by drawing from battery during peak rate periods .
Time-of-Use Optimization: Charge during low-rate periods and discharge when rates are high .
Commercial Backup: Reliable power for small businesses, telecommunications, and critical infrastructure .
Installation Guidelines
Wall-Mount Installation Steps
Mounting Bracket: Install the wall mounting plate using M8 expansion screws on a load-bearing wall. Ensure the installation is firm and level .
Protrusion Control: The height of expansion screws protruding from the wall must be controlled within 25mm to avoid interference with the battery box during installation .
Battery Placement: Carefully lift the battery and engage it with the mounted bracket. The design allows secure attachment while maintaining accessibility .
Securing: Follow picture 4 in the manual to secure the bottom if required for your installation .
General Installation Notes
Location: Install in a clean, dry, well-ventilated area away from direct sunlight and extreme temperatures
Rain Protection: For outdoor installations, ensure rain-proof and moisture-proof protection is installed
No Metal Objects: Do not place metal products near the battery to prevent short circuits
Proper Connections: Virtual connection points and corroded wires may generate high heat—ensure all connections are clean and tight
Wiring: Use appropriate cable diameters as recommended for 200A continuous current capability
Parallel Configuration
For multiple units :
Set unique hardware addresses for each pack using DIP switches (Pack 1 as host, subsequent packs as 2, 3, etc.)
Connect communication cables in daisy chain configuration
Connect power terminals in parallel using appropriately sized busbars or cables
All settings can be adjusted through the master pack’s communication port
Operation Guide
Power ON/OFF
To Activate (from sleep): Press and hold the reset button for 3-6 seconds, then release
To Sleep (when active): Press and hold the reset button for 3-6 seconds, then release
Understanding LED Indicators
Six SOC LEDs show approximate charge level, with each representing about 17% of full capacity. As the battery discharges, LEDs turn off progressively from top to bottom.
| LED State | Indication |
|---|---|
| All 6 LEDs solid | 100% – 84% SOC |
| 5 LEDs solid | 84% – 67% SOC |
| 4 LEDs solid | 67% – 50% SOC |
| 3 LEDs solid | 50% – 34% SOC |
| 2 LEDs solid | 34% – 17% SOC |
| 1 LED solid | 17% – 0% SOC |
| Fast flashing | Protection or alarm condition |
Communication Address Selection
| DIP Switch Position | Address | Use |
|---|---|---|
| All OFF | 0 | Stand-alone, no cascade |
| 1 ON | 1 | Pack 1 (Host) |
| 2 ON | 2 | Pack 2 |
| 3 ON | 3 | Pack 3 |
| Continue pattern | *4-15* | *Packs 4-15* |
Dry Contacts
AM1: Normally open, closes during fault protection conditions
AM2: Normally open, closes during low energy alarm
Maintenance
Visual Inspection: Periodically check terminals for tightness and casing for damage
Clean Surface: Keep battery top clean and dry
Software Monitoring: Use communication ports to periodically check cell balance and system health via the touch screen interface
Firmware: Check with Eastman for any available firmware updates to ensure optimal performance
Air Vents: Ensure cooling vents remain unobstructed for proper thermal management
Technical Comparison: ES51.2 Series Models
| Model | Energy | Voltage | Configuration |
|---|---|---|---|
| ES51.2-100LP | 5.12 kWh | 51.2V | Entry-level home storage |
| ES51.2-230LP | 11.77 kWh | 51.2V | Large home / whole-home backup |
| ES25.6-230LP | 5.88 kWh | 25.6V | Low-voltage applications |
| Parallel up to 15x | Up to 176kWh | 51.2V | Commercial scale |
Why Choose Eastman 11.77kWh?
The Eastman ES51.2-230LP represents the ideal balance of capacity, safety, and intelligent design for modern homes :
True 11.77kWh Capacity: Substantial storage for whole-home backup or large household consumption
Space-Saving Design: Wall-mount configuration respects your living space
Proven Cycle Life: 6,000+ cycles means 10-15 years of daily use
Scalable: Start with 11.77kWh and add more as budget or needs grow
Complete Visibility: Color touch screen puts system status at your fingertips
Inverter Compatible: CAN/RS485 communication works with major inverter brands
Contact Us
Ready to power your entire home with the Eastman 11.77kWh wall-mount lithium battery? Contact our team today for expert advice, pricing, a free site assessment, or to discuss your specific energy requirements.
📞 Call / WhatsApp: 0794485343
📧 Email: info@globussolar.com
🌐 Web: www.globussolar.com
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