RUIXU 51.2V 120Ah 6.14kWh | Self-heating 10-year warranty | UL1973 | UL9540 | CEC | SGIP
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Request a Free Solar ProposalThe RUiXU RX-LFP48120 6.14kWh Self-Heating Server Rack Battery is a reliable and expandable lithium iron phosphate (LiFePO4) energy storage solution designed for residential solar systems, off-grid applications, and home backup power. With a 51.2V nominal voltage, 120Ah capacity, and 6.144kWh energy storage, this battery delivers dependable performance in a compact 19-inch, 3U rack-mounted design.
Featuring built-in self-heating technology, an intelligent Battery Management System (BMS), and Bluetooth connectivity, the RX-LFP48120 provides enhanced protection, convenient system monitoring, and flexible inverter integration. Its modular design supports up to 64 batteries in parallel, allowing your energy storage system to expand as your power needs grow.
Built for long-term performance, the RX-LFP48120 offers 6,000+ rated cycles at 90% depth of discharge, a 15-year design life, and a 10-year manufacturer warranty.
6.14kWh High-Capacity LiFePO4 Battery – Provides 6.144kWh of energy storage with a 51.2V, 120Ah battery for reliable solar and backup power applications.
Built-In Self-Heating Technology – Features an integrated 180W heating system to support battery charging in cold conditions.
Expandable Up to 64 Batteries – Supports up to 64 units in parallel, providing approximately 393.2kWh of total nominal storage capacity.
Intelligent Battery Management System – Built-in BMS protects against overcharging, over-discharging, overcurrent, short circuits, and abnormal temperatures.
Bluetooth Monitoring and Control – Use the RUiXU Battery App to monitor battery performance, configure inverter protocols, and perform supported firmware updates wirelessly.


Everything you need is included with your product.
| Specification | Details |
| Nominal voltage | 51.2V |
| Nominal Capacity | 120 Ah |
| Nominal Energy | 6.14 kWh |
| Usable energy⁻¹ | 6.14 kWh |
| Operating voltage range | 44.8 V~57.6 V |
| Charge voltage | 56.5 V |
| Max charging voltage | 57.6 V |
| Charge current | Rated 60 A Max 100 A |
| Discharge current | Rated 60 A Max 100 A |
| Maximum discharge power | 5 kW |
| Communication | RS485 /CAN/Bluetooth |
| Peak discharge current | 109A / 15S |
| IP rating | IP20 |
| Cycle life | ≥6000 cycles @90%DOD |
| Net weight | ≈47kg (103.6 lbs) |
| Dimension (W×H×D) | 482×133.5×510mm (18.98×5.25×20.08 inch) |
| Cell type | Lithium-iron phosphate (LiFePO4) |
| Design life | 15 years |
| Storage temperature | -10°C ~ 45°C (14°F ~ 113°F) |
| Operation temperature | -30°C ~ 60°C (-22°F ~ 140°F) |
| Relative humidity | 5%~90% No condensation |
| Install altitude | ≤4000m |
| Install location | Indoor |
| Certification | UL1973 / UL9540A / CE / IEC61000 / IEC62619 / CEC / UN38.3 |
| Specification | Details |
| Voltage | 56V |
| Power Consumption | 180W |
| Function | self-heating starts ≤41°F (5°C), ≥53.6°F (12°C) self-heating stops |
Can I connect multiple RUiXU RX-LFP48120 batteries together?
Yes. The RX-LFP48120 supports up to 64 batteries in parallel, providing approximately 393.2kWh of total nominal storage capacity. Expansion must follow the manufacturer’s wiring, protection, and installation requirements.
Does the RX-LFP48120 have built-in self-heating?
Yes. The battery features an integrated 180W self-heating system that automatically warms the battery cells under specified cold-temperature conditions to support charging.
Is the RX-LFP48120 compatible with my solar inverter?
The RX-LFP48120 supports CANbus and RS485 communication with various inverter protocols, including supported options for Victron, Sol-Ark, Deye, Growatt, Schneider, and other manufacturers. Confirm compatibility with your specific inverter model and select the appropriate communication cable before installation.
Can the RX-LFP48120 battery be installed outdoors?
No. The RX-LFP48120 has an IP20 rating and is intended for indoor installation only. It must be protected from rain, moisture, direct sunlight, and unsuitable environmental conditions.
Are all cables included with the RX-LFP48120 battery?
No. The battery includes the standard battery-to-battery communication, grounding, and short battery-to-busbar cables listed in the package contents. External power, grounding, and inverter communication cables are not included. The S15 cable is sold separately for an additional $10 per set.
Shipping is free across the Lower 48. No fuel surcharges, no residential fees, and no liftgate charge on freight orders. The price you see is the price you pay. Read our full Shipping Policy here.
Most orders leave the warehouse in 1 to 2 business days and arrive within 3 to 10 business days. We send tracking the moment it ships.
Anything that ships on a pallet goes freight with liftgate and pallet jack included, so the driver gets it off the truck and onto the ground at your address. The carrier will call you directly to schedule a delivery window.
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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