Rubix Battery 48 Volt 280 AH, R-Series, Lithium Battery

Name: Rubix Battery 48 Volt 280 AH, R-Series, Lithium Battery
Brand: Rubix
SKU: RRS-51280
Price: 3770.0 USD
Availability: InStock

BY: Rubix

SKU: RRS-51280

| Availability: In stock

$3,770.00

Product Highlights

Built for home backup and off-grid power
14,336 Wh capacity for extended backup and off-grid runtime
Expandable design lets stored power grow with future needs
LiFePO4 chemistry supports dependable long-term cycling

Found A Better Price?

Share it with us now and we will beat it. Get the best deal online, guaranteed!

Live Chat With an Expert

Estimated Delivery Between

and .

Order within to get it by the earliest date.

Order within

to get it by the earliest date.

Authorized Rubix Dealer

Free & Fast Shipping From US Warehouses

Easy 30-Day Returns & Price Beat Guarantee

Lifetime Expert Support

Rubix Battery 48V 280Ah R-Series Lithium Battery

The Rubix Battery RRS51280 is a 48V (51.2V nominal) 280Ah LiFePO₄ lithium battery delivering 14.336kWh of energy storage per unit. Designed for scalable installations, it supports up to 64 batteries in parallel for large-capacity systems. Featuring a 200A maximum continuous discharge rating, integrated BMS protections, UL1973 certification, and prismatic LiFePO₄ cells, this R-Series battery is engineered for reliable residential and commercial energy storage applications.

Rubix Battery 48V 280Ah R-Series Lithium Battery Features

14.336kWh Energy Capacity – 51.2V, 280Ah lithium storage per battery.

200A Continuous Discharge – Supports high-demand inverter systems up to 10.24kW.

Parallel Scalability – Expandable up to 64 units (917.5kWh total capacity).

LiFePO₄ Chemistry – Prismatic cells with welded busbar connections for durability and safety.

Integrated BMS Protection – High/low voltage, temperature, and current protection systems.

Touchscreen LCD Interface – Displays state-of-charge, pack voltage, current, and temperature data.

UL1973 Certified – Certified for stationary energy storage applications.

Indoor Installation Rated (IP50) – Designed for protected indoor environments.

Rubix Battery 48V 280Ah R-Series Lithium Battery Applications

Residential Energy Storage – Whole-home backup and solar storage systems.
Commercial Battery Banks – Scalable installations for larger energy demands.
Off-Grid Systems – High-capacity parallel expansion capability.
Solar + Inverter Systems – Compatible with 48V inverter platforms.

What's Included

Everything you need is included with your product.

1 x Rubix Battery 48 Volt 280 AH, R-Series, Lithium Battery

Rubix Battery 48V 280Ah R-Series Lithium Battery Specifications

Model

Specification	Value
Energy Rating	51.2V 280Ah (14.336kWh)
Energy Scalability	64 × Parallel (917.5kWh)

Charging / Discharging

Specification	Value
Max Continuous Discharge Power	200A (10.24kW)
Recommended Discharge Power	180A (9.216kW)
Inverter Start-Up Capability	PWM Technology Start-Up
Max Continuous Charging Power	180A (9.216kW)
Peak Charging Power (30 min)	200A (10.24kW)
Recommended Absorb Volts	56.8V
Max Absorb Volts (Solar Only)	57.6V
Absorb Done Amps (per Battery)	4% of capacity
Absorb Done Time	10 min
Float Voltage	54.4V
Temp Comp (mV per °C)	0
Max Recommended Discharge	51V (20%)
Inverter Low Battery Cutout	48V
Peukert Exponent	1.04

Installation Requirements

Specification	Value
Ventilation Required	No
Minimum Environment Temp	32°F
Maximum Environment Temp	120°F
IP Rating	IP50
Outdoor Rated	No
Installation Position	Horizontal with Base Unit Only
Maximum Batteries per Stack	4

Cycle Life Rating

Specification	Value
Rated Cycle Life (100% DoD)	3,000 Cycles
Rated Cycle Life (80% DoD)	4,500 Cycles
Rated Cycle Life (50% DoD)	7,000 Cycles
Retained Capacity at End of Cycle Life	80%

Safety Features

Specification	Value
Breaker Current Rating	250A
BMS Low Voltage Disconnect	41 ±1V
BMS High Voltage Disconnect	59 ±1V
BMS Low Temp Charging Disconnect	0°F
Low Volts Cutout Wakeup	44V
High Volts Cutout Wakeup	55V
BMS High Temp Disconnect	135°F
Pressure Vented Cells	Yes
Rapid Shut Down Function (RPSD)	Yes

Certifications

Specification	Value
Cell Certification	UL1973
Transport	UN 38.3

Internal Components

Specification	Value
Cell Chemistry	LiFePO4
Cell Format	Prismatic
Balancing Type	Impactive
Max Balancing Current	2A
Cell Connection	Welded busbar

Touchscreen LCD Features

Feature

State-of-Charge

Pack Voltage

Charging/Discharging Current

Event Log

Internet Cell Data

Internal Temperatures

Dimensions

Component	Measurement
Battery with Handles	35.94" × 19.53" × 9.45"
Base	30.28" × 19.53" × 6"
Lid	30.28" × 19.53" × 0.78"

Spacing

Requirement	Distance
Minimum Spacing between Batteries and Wall	1 inch
Minimum Spacing between Parallel Battery Stacks	1 inch
Minimum Spacing between Top of Battery Stack and Solar Equipment on Wall	6 inches
Minimum Spacing between Battery Bank and Water Sources/Conductors	4 feet

Weight

Component	Weight
Battery Weight	271 lb
Base Weight	66.6 lb
Lid Weight	20.8 lb

Frequently-Asked Questions

How many batteries can be connected in parallel?

Up to 64 batteries can be connected in parallel.

Is this battery outdoor rated?

No. It carries an IP50 rating and is designed for indoor installations.

What chemistry does it use?

LiFePO₄ prismatic cells.

What is the continuous discharge rating?

200A (10.24kW).

What certifications does it have?

UL1973 and UN38.3 (transport).

Manual

Rubix Battery RRS51280 48V 280Ah Spec Sheet

Shipping & Easy Returns

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.

Why Buy From Us

Buying solar online should not mean guessing your way through the install. Here’s what you get with Off-Grid Source.

We size the system, not just sell it. Call before you order and a sales engineer will check the kit against your actual loads, tell you if you’re buying too much or too little, and list the site-specific parts your install will need.
A+ rated by the Better Business Bureau. Another trust signal that you’re buying from a real company that stands behind the sale.
Free shipping across the Lower 48. No hidden freight charges, residential fees, or liftgate surprises at checkout.
Guaranteed best prices. Find the same product for less elsewhere and we’ll match it.
30-day easy returns. If it is not the right fit, we’ll help you get it sent back.
A real person on the phone. Product questions, sizing, install planning, warranty help: call us at +1 (877) 556-3347.

FAST & FREE SHIPPING

From US-Based Warehouse

30-DAYS EASY RETURNS

Yes, Really.

GUARANTEED BEST PRICES

Find a Better Price? We’ll Match It.

GREAT CUSTOMER SERVICE

Call Us: (+1) 877-556-3347

Our Customers Tell It Better Than We Do

Excellent 4.9/5

Trusted By 10,000+ Customers. See All Reviews.

They Stood By Me

I was a DIY solar power wannabe... that is 'til I connected with Manny... The man's a prince! He not only knows his stuff; he walked me through all things electrical. To make sure I had all I needed... he gave me his cell phone # to text him anytime I got confused... nights and weekends included. The prices were very competitive... definitely go with Manny -- you won't go wrong!

Bruce D.

Awesome Service!

I am always hesitant to buy things at places I have never shopped... I want to give a shout out to Manny who with great patience and knowledge helped me get my orders... I felt valued as a customer and I will definitely be back in the future. I highly recommend them, they make you feel like family.

Jennene A.

Real Person, Honest Service.

I'm about to go off grid. I called Manny, he walked me through everything so I could truly understand what I needed and never tried to upsell me. He was honest and made a customer for life.

Ray B.

Easy Return

I would personally like to thank Manny... I purchased the inverter and decided I needed to return it... Manny was very understanding and went out of his way to help me return the product and not even have to pay for shipping return. He gives this company reputation, honor and quality customer service!

Roger V.

Totally Off Grid.

I have been talking with Manny the owner... He has not only helped me design a system but he's been assisting with the install and components. I am super pleased so far with the assistance.

Jeff S.

Great Product! Fast Shipping

We added 2 more batteries to our current set up. Pleased with the customer service from Off-Grid Source! Will be back!

Jason

Excellent Customer Service

Very fast response times. Very professional. I highly recommend!

Ray W.