5.3kWh Deye (SE-G5.3) 51.2V Low Voltage Rack-Mount LiFePO4 Battery (104Ah, 3U Rack, 6000+ Cycles)
Overview
Secure continuous energy independence for your home or office with the Deye 5.3kWh 51.2V LW LiFePO4 Lithium Battery (SE-G5.3). Built using cobalt-free Lithium Iron Phosphate chemistry, this compact 3U server-rack-style battery offers outstanding thermal stability, enhanced fire safety, and reliable daily cycling for 48V/51.2V low-voltage hybrid inverter systems.
Engineered with a 104Ah nominal capacity and providing 4.79kWh usable energy at 90% Depth of Discharge, the SE-G5.3 is versatile enough for wall-mounting, floor-stacking, or fitting directly into standard 19-inch server racks. Equipped with CAN 2.0 and RS485 communication protocols, it communicates seamlessly with Deye and Sunsynk inverters and supports massive scalability up to 64 units in parallel for a combined capacity of approximately 340kWh.
Key Highlights
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High Usable Storage Capacity: Delivers 4.79kWh usable energy (5.32kWh total nominal capacity) at a recommended 90% Depth of Discharge.
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Standard 3U Rack-Mount Form Factor: Compact dimensions (440 x 560 x 133mm) allow for neat installation in standard 19-inch server equipment racks, wall enclosures, or stacked floor mounts.
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Cobalt-Free LiFePO4 Chemistry: Ensures superior chemical safety, high power density, and zero maintenance over a 10+ year design life.
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150A Peak Discharge Surge: Handles demanding startup currents with a 150A peak discharge capacity for up to 2 minutes (25'C).
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Massive Parallel Scalability: Supports up to 64 modules connected in parallel without needing complex external controllers, reaching system capacities up to 340kWh.
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Seamless Inverter Integration: Native CAN 2.0 and RS485 communication ports synchronize instantly with Deye, Sunsynk, and other top-tier 48V hybrid inverters.
Technical Specifications
Capacity & Electrical Performance
| Parameter | Specification |
| Model Name | Deye SE-G5.3 |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO4) |
| Nominal Energy Capacity | 5.32kWh |
| Usable Energy Capacity | 4.79 kWh (90% DoD) |
| Nominal Ah Capacity | 104Ah |
| Nominal Voltage | 51.2V DC |
| Operating Voltage Range | 43.2V DC - 57.6V DC |
| Recommended Charge/Discharge Current | 50A |
| Max Continuous Charge/Discharge Current | 100A |
| Peak Discharge Current | 150A (2 minutes @ 25'C) |
| Cycle Life | 6,000 Cycles @ 90% DoD (25'C, 0.5C) |
BMS, Communication & Scalability
| Feature | Detail |
| Integrated BMS Features | Overvoltage, Undervoltage, Overcurrent, Short Circuit, Temp Safeguards |
| Communication Ports | CAN 2.0 / RS485 |
| Max Parallel Units | Up to 64 Modules (Max total capacity \approx 340kWh) |
| Design Lifespan | 10+ Years |
| Depth of Discharge (DoD) | 90% Recommended |
Physical, Environmental & Compliance
| Feature | Detail |
| Form Factor / Height | Standard 19-inch Rack Chassis (3U Height) |
| Dimensions ($W \times D \times H$) | 440 x 560 x 133mm |
| Net Weight | Approx. 44.0kg |
| IP Enclosure Rating | IP20 (Indoor / Rack Enclosure environment) |
| Mounting Options | 19-inch Server Rack, Wall-Mounted Bracket, or Floor-Stacked |
| Safety & Testing Certifications | UN38.3, IEC62619, CE, UKCA |