RUIXU | 51.2V100Ah 5.12kWh | 10-year warranty | UL1973 | UL9540A | UL9540 Pending

Experience uncompromising energy independence with the RX-LFP48100, a professional-grade lithium iron phosphate battery engineered for demanding applications. This 5.12kWh powerhouse delivers 51.2V at 100Ah capacity in a compact 19" rack-mounted 3U form factor, making it the intelligent choice for off-grid living, renewable energy systems, and critical backup power. Built to last with a 10-year warranty and certified to UL1973, UL9540A, and UL9540 standards, this battery combines scalability with reliability for installations that refuse to compromise.

Modular Design

• Connect up to 32 units in parallel without the need for an external controller.

• Scalable from 5 kWh to 160 kWh, adapting to your growing energy storage needs.

Communication & Inverter Compatibility

• DIP Switch Addressing: Easily configure RS485 baud rate and select inverter protocols.

• CANbus Compatibility with:
  Victron, SMA, Studer Innotec, Sofar, Solark, Solis, Goodwe, Deye, Growatt, SAJ, LUXPOWER, Megarevo, INVT, Sermatec, TBB, MUST, Sunsynk, Schneider.

• RS485 Compatibility with:
  MPP, Voltronic, RCT, Alpha Outback.

Certifications

• UL1973 Certified

• UL9540A Tested

• UL9540 Certification Pending

Included Cables

1. Cabinet Installations (6-slot):
   Includes 300mm cable (battery to cabinet busbar).

2. Standalone Battery Systems (No Busbar):
   Includes 250mm cable (battery to battery), compatible only with 48V systems rated 2000W–5000W.

What's Included

• (1) RUiXU 48V Server Rack Battery (RX-LFP48100)
• (1) RJ45/CAT5e Patch Cable
• (1) Ground Cable
• (1) Set of Parallel 4AWG Cables per battery

Specifications

• Nominal Voltage: 51.2V
• Nominal Capacity (0.2C): 100 Ah
• Minimum Capacity (0.2C): 100 Ah
• Nominal Energy: 5120Wh
• Dimensions (W x D x H): 482.6 x 460 x 133 mm (19 x 18.1 x 5.23 inches)
• Weight: ~47 kg (103.6 lb)

Manual and Downloads

• Spec Sheet
• User Manual
• RuiXUTool Software Operation Instructions

Warranty 

OffGridLux (“the Seller”) warrants each RUIXU branded battery (“the Product”), as listed below, sold by RUIXU or any of its authorized distributors or dealers, to be free of defects for the period as listed in the table below (“the Warranty Period”), from the date of sale as determined by either the customers’ sale receipt, the shipping invoice and/or the battery serial number, with proof of purchase. Within the Warranty Period, subject to the exclusions listed below, the Manufacturer will credit, replace or repair, if serviceable, the Product and/or parts of the Product, if the components in question are determined to be defective in material or workmanship.

The Warranty Period for Physical Goods purchased from RUiXU  Battery or authorized distributors or dealers is 10 Years.

RUiXU Battery will replace or repair the product at no charge, using new or refurbished replacement parts.

The Seller has no obligation under this limited warranty for product subjected to the following conditions (including but not limited to):

*Damage caused during shipping or mishandling of the Product

*Damage due to improper installation:loose terminal connections, under-sized cabling, incorrect series (cannot be used in series) or parallel connections, reverse polarity connections, or insufficient space for airflow

*Environmental damage such as inappropriate storage conditions as defined by the Manufacturer, exposure to extreme hot or cold temperatures, fire or freezing, or water damage, impact, or collision

*Damage due to improper operation or maintenance such as under- or over-charging the Product, cold temperature charging, lack of cleaning resulting in corroded terminal connections or build-up of dirt, debris, organic matter, fossil fuels, or chemicals on the Product casing

*Improper use of CAN cables such as improper connections or not connecting them

*Installing CAN communication devices that do not follow the appropriate CANbus guidelines as defined by the Manufacturer

*Product that has been opened, modified, or tampered with Tampering or removal of manufacture date codes.

*Product that was used for applications other than which it was designed and intended for by the Manufacturer

*Product that was under-sized for the application.

This Limited Warranty does not cover a Product that has reached its normal end of life due to usage which may occur prior to the Warranty Period. A battery can deliver only a fixed amount of Energy over its life which will occur over different periods of time depending on the application. The Manufacturer reserves the right to deny a warranty claim if the Product is determined, upon inspection, to be at its normal end of life even if within the Warranty Period.

Submitting A Warranty Claim

To submit a warranty claim, please contact the original place of purchase. The Product may be required to be shipped back to the Seller for further inspection. The Product must be shipped in compliance with UN38.3. Please note that DOT requires all persons’ shipping batteries to be Hazmat certified.

Technical Support

If you have technical questions about the Product, please contact us 

 Why Shop With OffGrid Lux?

• Focused on off grid & outdoor living
  We are not a generic big-box store. OffGrid Lux is dedicated to off grid power, shelters, saunas, recovery tools and electric mobility, so every product fits a clear purpose: more independence and better quality of life.

• Authorized dealer & authentic products
  We work directly with trusted U.S. brands and distributors. That means genuine products, valid manufacturer warranties and up-to-date specifications on every item.

• Transparent pricing, no hidden tricks
  Competitive pricing, no sales tax in most U.S. states, and clear shipping costs. If you find a better final price online (after shipping and fees), let us know – we are happy to price match whenever possible.

• Free or low-cost shipping on most orders
  Many items ship free within the continental U.S., and for heavier freight shipments we clearly show any small customer contribution instead of hiding it in the product price.

• Clear lead times & honest availability
  If something is in stock, made to order, or on backorder, we tell you upfront. You will know what to expect before you pay, not after.

• Human support, not a call center script
  Need help choosing between two batteries, inverters, saunas or bikes? You will talk to a real person who actually knows the products, by email, phone or SMS, and who stays with you before and after your purchase.

• Project-minded guidance
  Working on a full system – solar, backup power, shelter or outdoor spa? We can help you think through sizing, compatibility and practical details so you do not overbuy or end up with the wrong gear.

• Fair return & warranty assistance
  Most products are eligible for returns within 30 days according to our Return & Refund Policy, and we assist you with warranty claims directly with the manufacturer if anything arrives damaged or defective.

• Secure online checkout
  Your payment is processed through encrypted, PCI-compliant gateways so you can order with confidence.