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Product Description

RUiXU Lithi2-20 51.2V 392Ah 20kWh LiFePO4 Battery Storage System

The RUiXU Lithi2-20 packs 20kWh of lithium iron phosphate (LiFePO4) storage into a single 48V battery for home backup, off-grid solar and light commercial systems. It is rated for 9,500+ cycles at 80% depth of discharge, delivers 200A continuous charge and discharge, and communicates with your inverter over CAN or RS485.

Up to 32 units can run in parallel, scaling a system from 20kWh to 640kWh. The IP55 enclosure is rated for indoor or outdoor installation, and built-in self-heating keeps it charging in cold weather. It is certified to UL1973, UL9540 and UL9540A and is CEC listed.

Key Features

  • 20kWh in one battery: 51.2V, 392Ah LiFePO4 with 9,500+ cycles at 80% DOD
  • High output: 200A continuous charge/discharge, with peak discharge of 240A for 15 seconds and 360A for 1 second
  • Expandable: up to 32 batteries in parallel, from 20kWh to 640kWh
  • Indoor or outdoor: IP55-rated enclosure protects against dust and water jets
  • Self-heating: integrated 480W heater turns on at 41°F (5°C) or below and off at 53.6°F (12°C)
  • Bluetooth monitoring and OTA updates: check battery data and update firmware wirelessly through the RUiXU app
  • Aerosol fire suppression: built-in module adds protection for the wiring and cells inside the pack
  • Quick-connect terminals: rated for 200A continuous for tool-free cable connections
  • All-pole protection: fuse on the negative terminal and a circuit breaker on the positive terminal
  • Intelligent cell balancing: 150mA passive balancing keeps cells matched after charging
  • Emergency power off: supports an external emergency shutdown through the Link-IN port
  • Easy service: side inspection port gives direct access to the BMS
  • Flexible installation: multiple mounting and mobility options

Applications

Whole-home backup power, off-grid solar homes and cabins, grid-tied hybrid solar systems, and light commercial energy storage.

Specifications

Model Lithi2-20
Chemistry LiFePO4
Nominal Voltage 51.2V
Nominal Capacity 392Ah
Nominal Energy 20kWh
Operating Voltage Range 43.2-58.4V
Recommended Charge/Discharge Current 140A
Max. Charge/Discharge Current 200A
Peak Discharge Current 240A for 15s; 360A for 1s
Cycle Life ≥9,500 cycles @ 80% DOD
Parallel Capacity Up to 32 units (640kWh)
Communication CAN / RS485 / Bluetooth
Self-Heating 480W, on at ≤41°F, off at ≥53.6°F
Enclosure Rating IP55, indoor/outdoor
Weight Approx. 319.7 lbs (145kg)
Certifications UL1973, UL9540, UL9540A, CEC listed

Warranty

Backed by RUiXU's 10-year warranty.

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