RUIXU Battery

RUiXU 48V Server Rack Battery Kit with 6-Slot Cabinet, 15kWh to 30kWh, 3-6 RX-LFP48100 LiFePO4 Batteries, UL 1973

🔋 15.36–30.72kWh 48V LiFePO4 Kit|🔗 CAN & RS485 Inverter Comms|🗄️ 6-Slot Cabinet with Busbars|🛡️ 10-Year RUiXU Warranty

Regular price: Price: $3,776.00
Regular price: List Price: $4,076.00
Sale price: Price: $3,776.00
Unit price: per

In Stock – Ready to Ship

Free Shipping – Lower 48

Authorized Dealer – Full manufacturer warranty

Pay Over Time – Shop Pay Installments

Ships From US Warehouses

Kit Size 15kWh (3 Batteries) 20kWh (4 Batteries) 25kWh (5 Batteries) 30kWh (6 Batteries)

Product variants

Quantity

🇺🇸Free ShippingContiguous 48 states
🛡️10-Year WarrantyRUiXU limited warranty
🔋15.36–30.72 kWh3 to 6 batteries, 48V
✅UL 1973 CertifiedPlus UL 9540A tested
🗄️Cabinet IncludedPre-assembled, with busbars
📞Real Human SupportSystem sizing help

RUiXU 48V server rack battery kit with a pre-assembled 6-slot cabinet, 15kWh to 30kWh: 3 to 6 RUiXU RX-LFP48100 5.12kWh LiFePO4 batteries in a steel cabinet with covered busbars, plus the cables to link them. Choose the size you need: 15 kWh (3 batteries), 20 kWh (4 batteries), 25 kWh (5 batteries) or 30 kWh (6 batteries). Each battery stores 5.12 kWh (4.92 kWh usable) with 6,000+ cycles at 90% depth of discharge, and the bank talks to your inverter over CAN or RS485 in closed loop. The cabinet arrives pre-assembled with covered busbars, a lockable door and casters, and holds up to six batteries. Certified to UL 1973 and tested to UL 9540A. Backed by RUiXU's 10-year limited warranty.

15.36–30.72kWh nominal

3–6Batteries in the kit

Up to 32Batteries in parallel

6,000+Cycles at 90% DOD

Ratings from RUiXU's spec sheet. Kit contents from RUiXU's kit listings.

🔋 Is It Right for Your System?

Built for 48V home energy storage with a compatible inverter. Common uses:

Home solar storage
Whole-home backup
Off-grid homes
Shops & outbuildings
Victron & Sol-Ark systems

📏 Quick check before you order:

Your inverter is 48V and on RUiXU's list (CAN: Victron, SMA, Sol-Ark, Growatt, Deye, Schneider and more; RS485: Voltronic, MPP, Sunsynk and more).
You'll install it indoors. The batteries are IP20, so the kit isn't for outdoor or wet locations. Charging needs the batteries at 0°C (32°F) or warmer; choose the self-heating kit for colder spaces.
You have floor space for the cabinet: about 23.6 in wide, 29.5 in deep and 42.3 in tall on its casters (per RUiXU).
Your floor can take the weight: each battery is 103.6 lb, so a full 6-battery cabinet holds about 622 lb of batteries plus the cabinet.
You'll add battery-to-inverter cables, a DC breaker or fuse, and an inverter communication cable.
Need UL 9540? RUiXU lists UL 1973 and UL 9540A, not UL 9540. Check with your inspector, and call us if you need paperwork.

Not sure which size? Tell us your inverter and loads, and we'll size the kit before you buy.

Why Choose RUiXU Server Rack Batteries

🔋

5.12 kWh Per Battery

51.2 V, 100 Ah LiFePO4 modules with 4.92 kWh usable and 6,000+ cycles at 90% depth of discharge.

🔗

Talks to Your Inverter

CAN and RS485 closed-loop communication with Victron, Sol-Ark, Voltronic, MPP, Growatt, Deye, Schneider and more.

➕

Expand to 32 Batteries

Parallel up to 32 batteries (160 kWh) with no extra controller, so you can start small and grow.

✅

UL 1973 & UL 9540A

Intertek-certified to UL 1973, with UL 9540A fire testing, IEC 62619 and UN38.3.

🧠

Smart BMS

Protects against overcharge, over-discharge and overcurrent, and balances the cells automatically.

🗄️

Pre-Assembled Cabinet

A steel 6-slot cabinet with covered busbars, a lockable door and casters arrives ready for the batteries.

🎥 Videos

RX-LFP48100 firmware upgrade (from RUiXU)

Independent review: RUiXU battery cabinet install (DIY Solar Fun)

🔋 Kit Sizes

Kit	Batteries	Nominal energy	Usable energy	Combined max discharge
15 kWh	3	15.36 kWh	14.76 kWh	300 A
20 kWh	4	20.48 kWh	19.68 kWh	400 A
25 kWh	5	25.60 kWh	24.60 kWh	500 A
30 kWh	6	30.72 kWh	29.52 kWh	600 A

Multiples of RUiXU's per-battery ratings (50 A recommended, 100 A max each). Your inverter, cabling and busbar set the real limit.

📦 What's Included & What You'll Need

3–6 × RUiXU RX-LFP4810048V 100Ah 5.12kWh batteries; quantity depends on the size you choose
6-Slot Battery CabinetPre-assembled steel, covered busbars, lockable door and casters
Cables for Each BatteryRJ45 communication cable, ground cable and 4AWG parallel cables (30 cm, to the cabinet busbar)
Manuals & Warranty CardsOne with each battery

Plan to add: Battery-to-inverter cables, a DC breaker or fuse, and an inverter communication cable. RUiXU's RS485 PC cable for RuiXUTool is sold separately. Ask us and we'll put together everything your install needs.

🔍 Which RUiXU Option Fits?

Every option uses the same 48V 100Ah RUiXU server rack battery. Pick by heater, mounting and size.

Option	Batteries	Energy	Self-heating	Mounting
RX-LFP48100	1	5.12 kWh	No	Your rack, bracket or cabinet
RX-LFP48100-H	1	5.12 kWh	Yes	Your rack, bracket or cabinet
Bracket Rack Kit	2–4	10–20 kWh	No	Stackable bracket racks
Self-Heating Bracket Rack Kit	3–4	15–20 kWh	Yes	Stackable bracket racks
Cabinet Kit	3–6	15–30 kWh	No	6-slot cabinet with busbars
Self-Heating Cabinet Kit	3–6	15–30 kWh	Yes	6-slot cabinet with busbars

All options are on our store. Not sure which fits? Call 833-664-7433.

🔌 Charging & Inverter Setup

⚡

Charge Settings

Charge at 56.0 V and float at 54.6 V, at up to 50 A per battery recommended (70 A max).

🔗

Closed-Loop Communication

Connect the master battery to your inverter over CAN or RS485 so it can set charge limits automatically.

🎚️

Protocol DIP Switch

Choose your inverter brand's protocol with the DIP switch on the master battery.

💻

Firmware & Monitoring

Update firmware and view cell data with RUiXU's RuiXUTool PC software and an RS485 cable.

🛡️ 10-Year RUiXU Limited Warranty

Years 1–10RUiXU limited warranty from the date of sale, with proof of purchase

15-Year Design LifeRUiXU's rated design life, with 6,000+ cycles at 90% depth of discharge

Warranty claims are made through the place of purchase, which is us. RUiXU's warranty doesn't cover improper installation or wiring, reverse polarity, extreme environments, charging below the allowed temperature, communication misuse, opening or tampering with the battery, misuse, or normal end of life. Full terms on RUiXU's warranty page below.

📋 Full Specifications

Battery (per module)
Model	RUiXU RX-LFP48100
Chemistry / Format	LiFePO4, 19-inch server rack, 3U
Nominal Voltage / Capacity	51.2 V / 100 Ah
Nominal / Usable Energy	5.12 kWh / 4.92 kWh (90% DOD)
Operating Voltage	44.8–56.0 V
Charge / Float Voltage	56.0 V / 54.6 V
Charge Current	50 A recommended; 70 A max
Discharge Current	50 A recommended; 100 A max
Peak Discharge	101–119 A for 5 minutes; 120–149 A for 15 seconds
Cycle Life / Design Life	6,000+ cycles at 90% DOD / 15 years
Parallel	Up to 32 batteries (160 kWh), master/slave switch
Communication & Controls
Ports	Link In / Out (CAN and RS485), RJ45
Inverter Protocol	Set by DIP switch on the master battery
Front Panel	Power switch, reset button, RUN / ALM / SOC lights, dry contacts (incl. rapid shutdown input)
Monitoring	RuiXUTool PC software over RS485 (no screen or Bluetooth)
Physical & Certifications
Dimensions (W × H × D)	482 × 133.5 × 460 mm (18.9 × 5.2 × 18.1 in)
Weight	About 47 kg (103.6 lb) per battery
Protection	IP20, indoor installation only
Operating Temperature	-10 to 50°C (14 to 122°F), derated below 10°C and above 40°C; charging 0 to 50°C per the manual
Storage Temperature	-10 to 45°C (14 to 113°F)
Certifications	UL 1973, UL 9540A, IEC 62619, CE, UN38.3
Warranty	10-year RUiXU limited warranty
Kit & Cabinet
Kit Sizes	15kWh (3 batteries), 20kWh (4 batteries), 25kWh (5 batteries), 30kWh (6 batteries)
Cabinet	6-slot, pre-assembled, heavy-duty steel, powder-coated
Cabinet Features	Covered busbars, lockable front door and side panels, casters, cage nuts and screws
Cabinet Size (W × D × H)	23.6 × 29.5 × 39.3 in; 42.3 in tall with casters (per RUiXU)

📄 Manuals & Downloads

📄Spec SheetRX-LFP48100 & RX-LFP48100-H (PDF)PDF ↗📘User ManualRX-LFP48100 series, V1.2 (PDF)PDF ↗✅UL 1973 CertificateIntertek, covers both models (PDF)PDF ↗🔥UL 9540A Test ReportRUiXU test report (PDF)PDF ↗💻RuiXUTool Software GuidePC monitoring over RS485 (PDF)PDF ↗📜RUiXU Limited WarrantyFull warranty termsRUIXU ↗

Specs are from RUiXU's spec sheet and manual. Documents above link straight to RUiXU.

❓ Common Questions

Will it work with my inverter?

It's built for closed-loop communication. Over CAN it supports Victron, SMA, Studer, Sofar, Sol-Ark, Solis, GoodWe, Deye, Growatt, SAJ, LuxPower and Schneider; over RS485 it supports Voltronic, MPP, RCT, Alpha, OutBack, Megarevo, INVT, Sermatec, TBB, MUST and Sunsynk. Set the protocol with the DIP switch on the master battery. Tell us your inverter and we'll confirm.

Does it have a screen or Bluetooth app?

No. Lights on the front show status and state of charge, and RUiXU's RuiXUTool PC software shows full data over an RS485 cable. With closed-loop communication, many inverters also show battery data on their own display or app.

Can I install it outdoors?

No. The battery is IP20 and rated for indoor installation only, in a dry, ventilated space.

Is it UL 9540 listed?

RUiXU lists UL 1973 (battery) and UL 9540A (fire test), not a UL 9540 system listing. Some inspectors require UL 9540 for the full system, so check with your local authority. Call us if you need paperwork.

Can I add batteries later?

Yes. Up to 32 batteries can run in parallel without an external controller. Set one battery as master and the rest as slaves. A 6-slot cabinet holds six batteries, so plan a second cabinet past 30 kWh.

How does the warranty work?

RUiXU covers it for 10 years from the date of sale with proof of purchase. Warranty claims go through the place of purchase, so contact us and we'll handle it with RUiXU.

Questions About Your Setup? Ask Us First.

Tell us your inverter, loads and where the batteries will go, and we'll confirm the right RUiXU kit size before you order.

📞 Call 833-664-7433 📧 Email Us

Shipping cost	Free standard and freight shipping on eligible orders. No shipping or handling fees at checkout.
Where we ship	48 contiguous U.S. states, to a physical street address
Where we don't ship	Alaska, Hawaii, U.S. territories, international addresses, PO Boxes, APO/FPO/DPO military addresses
Order cutoff	4:00 PM Eastern, Monday–Friday. Later orders start processing the next business day.
Parcel delivery	About 3–7 business days total
Freight delivery	About 5–18 business days total (large batteries, kits and palletized items)
Pre-orders	Ship on the timeline shown on the product page
Tracking	Emailed when your order ships. Allow 24–48 hours for updates.
Damage or missing package	Damage: tell us within 48 hours of delivery. Missing "delivered" package: tell us within 7 days.

	Parcel (UPS, FedEx, USPS)	Freight (truck, usually on a pallet)
Handling time	1–2 business days	2–3 business days
Transit time	2–5 business days	3–15 business days
Total estimate	3–7 business days	About 5–18 business days
Delivery	Left at your door per carrier practice	Carrier may call to schedule a delivery appointment

Return window	30 days from delivery to request a return RUiXU products: 10 days from delivery
Item condition	Unused, uninstalled, complete, in the original packaging
Change-of-mind restocking fee	Up to 20% of the item price
Damaged, defective or wrong item sent	No restocking fee. We pay return shipping.
Return shipping (change of mind)	Paid by the customer
Refund method	Original payment method
Refund timing	Processed within 7 days of receiving your return. Your bank usually posts it within 5–10 business days.
Exchanges	Damaged or defective items only
Not returnable	Installed or used batteries, special-order items, opened media and mapping cards

RUiXU 48V Server Rack Battery Kit with 6-Slot Cabinet, 15kWh to 30kWh, 3-6 RX-LFP48100 LiFePO4 Batteries, UL 1973

RUiXU 48V Server Rack Battery Kit with 6-Slot Cabinet, 15kWh to 30kWh, 3-6 RX-LFP48100 LiFePO4 Batteries, UL 1973

🔋 Is It Right for Your System?