• A black Rich Solar Alpha 5 Pro 48V 5.12kWh lithium battery features multiple input/output ports, control buttons, and indicator lights on the front panel, plus a Battery Management System for efficient solar energy storage.
  • Front view of a black Rich Solar ALPHA 5 PRO battery with an orange logo and white text showing 51.2V 100Ah 5120Wh. It features an advanced Battery Management System (BMS) and two top terminal ports, one red and one black.
  • A black Rich Solar Alpha 4 Pro 48V 220Ah lithium battery with a Battery Management System and remote monitoring app is shown. Above are its included cables—two power cables (black and orange), a communication cable, and yellow wire.
  • Two stacked black Rich Solar ALPHA 5 PRO 51.2V 100Ah lithium batteries feature digital displays, orange/black connectors, power switches, indicator lights, and an advanced BMS on the front panels.
  • Three stacked black Rich Solar Alpha 5 Pro batteries, each with front control panels (screens, switches, connectors, indicator lights), offer advanced features like a Battery Management System (BMS) for enhanced performance.
  • Four stacked black Rich Solar Alpha 5 Pro 51.2V 100Ah lithium batteries feature digital displays, control buttons, indicator lights, orange and black connectors, and an advanced Battery Management System for optimal performance.
  • A black server rack on wheels with a glass door is open, showing five stacked Rich Solar lithium batteries with BMS, orange cables, visible wiring, and control panels.
  • A black Rich Solar server rack with an open glass door reveals six stacked lithium battery modules featuring orange cables and a built-in Battery Management System (BMS). The mobile unit stands on wheels for easy movement.
  • A Rich Solar black battery cabinet with a glass front door, six visible batteries, four wheels, and an integrated BMS. Dimensions: 44.1 tall, 27.5 wide, and 27.5 deep.
  • A black Rich Solar battery cabinet on four wheels displays six stacked Alpha 5 Max battery modules behind a glass front door, featuring a Battery Management System (BMS) for advanced safety and performance.
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Rich Solar 5.12kWh 48V (51.2V) 100Ah Server Rack Lithium Battery | ALPHA 5 PRO | UL1973, UL9540A | 10-Year Warranty

SKU: RS-B5121P
Availability: In stock
$1,749.00
$1,999.00 $1,749.00
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48V Server Rack Battery · LiFePO4 · PRO

5,120Wh of Rack-Mounted Power With Bluetooth and Subzero Heating

The ALPHA 5 PRO is Rich Solar's premium 51.2V 100Ah server rack battery — rated for 7,000+ cycles with a 10-year warranty, Bluetooth and WiFi app monitoring, and an integrated 150W heater for cold-weather charging, built for residential, commercial, RV, and off-grid systems.

5,120WhNominal Energy
7,000+Cycle Life
10yrWarranty
30Max Units in Parallel
A close-up of an RV parked by the ocean, with its storage compartment open, showcases the Rich Solar 5.12kWh 48V (51.2V) 100Ah Server Rack Lithium Battery | ALPHA 5 PRO neatly installed inside. The smooth curves of the compartment door, reminiscent of a gentle border-radius, highlight thoughtful design touches, while the sleek form of Rich Solar’s battery and its refined control panels evoke the polished detail of a premium font family or box shadow effect—combining advanced technology and elegant aesthetics in this tranquil coastal setting.
Highlights

What Sets the ALPHA 5 PRO Apart

Real-Time Battery Insight

  • WiFi + Bluetooth app monitors SOC, voltage, current, temperature, and capacity in real time
  • Instant alerts for safe battery operation
  • Front-panel LCD and LED display shows SOC, status, and alarms at a glance

Integrated 150W Subzero Heater

  • Charging locks out entirely below 32°F
  • Internal heating automatically starts below 41°F
  • Heating stops once the battery warms past 50°F

Advanced Safety

  • Smart BMS protects against overcharge, over-discharge, overcurrent, and temperature fluctuations
  • Automatic cell balancing
  • Dual-layer safety: fail-safe circuit breaker plus FET protection for extreme conditions (-4°F to 239°F)
  • Certified to UL1973, UL9540A, FCC, UN38.3, and MSDS standards

Premium LiFePO₄ Cells

  • Grade-A prismatic cells with a welded design — no loose connections
  • 7,000+ cycles at 80% depth of discharge
  • 5,120Wh in a compact, lightweight design
  • Discharges reliably from -4°F to 149°F

Easy Rack-Mount Installation

  • Standard 3U rack-mount size fits most server racks
  • Robust sheet metal casing for durability and strength
  • Built-in carry handles for effortless transport and installation

Optional Battery Server Rack

  • Holds up to 6 ALPHA 5 Series batteries (30.72kWh combined)
  • 600A copper busbars with protective covers
  • Scales cleanly as system capacity grows
Cold-Weather Protection

Integrated 150W Subzero Heater

< 32°F / 0°C Charging locked out
< 41°F / 5°C Internal heating starts
> 50°F / 10°C Internal heating stops
Charging

Three Ways to Charge

LiFePO4 Charger

~6 hours (57.6V, 20A, 0.2C)

Solar Panel

1 sunny day (>1,500W)

Generator

~6 hours (20A DC-DC charger)

Data

Full Specifications

Nominal voltage 51.2 V
Nominal capacity 100 Ah
Nominal energy 5,120 Wh
Max. discharge current 100 A
Max. charging voltage 57.6 V
Max. charging current 100 A
Charge temperature 32°F to 140°F
Discharge temperature -4°F to 149°F
Wireless monitoring WiFi + Bluetooth
Protection class IP21
Weight 100.9 lbs
Dimensions 17.7 × 17.8 × 5.2 in
Integration

Multi-Brand Communication Protocols

The battery supports RS485 and CAN protocols for compatibility with major inverter brands, selectable in system settings for proper communication.

RS485 Protocol

Pylon Growatt Schneider LuxPower

CAN Protocol

Pylon Growatt Victron Energy SOL-Ark Schneider LuxPower GoodWe Solis Senergy SMA MegaRevo
Use Cases

Where It Fits

Residential Commercial RVs Marine Cabins Off-Grid
FAQ

Common Questions

What does the app monitor?

Real-time state of charge, voltage, current, temperature, and capacity via WiFi or Bluetooth, with instant alerts for battery status — available for both iOS and Android.

Can it charge in freezing temperatures?

Charging locks out entirely below 32°F. An integrated 150W heater activates automatically below 41°F to bring the battery to a safe charging temperature, then shuts off once it passes 50°F.

How many units can be paralleled together?

Up to 30 units, with an optional battery server rack that holds up to 6 batteries (30.72kWh) using 600A copper busbars for larger, cleaner installations.

Is it compatible with inverters from other brands?

Yes — it supports both RS485 and CAN communication protocols matched to major brands including Pylon, Growatt, Victron Energy, SOL-Ark, Schneider, LuxPower, GoodWe, Solis, Senergy, SMA, and MegaRevo.

What certifications does it carry?

UL1973, UL9540A, FCC, UN38.3, and MSDS.

What's the warranty?

The ALPHA 5 PRO is backed by a 10-year warranty.

Downloads

Documents & Downloads

Full Specification User Manual Certificate of Compliance Communication Protocols App Quick Start Guide

Backed by a 10-year warranty. See Rich Solar's full warranty page for terms.

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Free shipping on all orders within the mainland US (Hawaii, Alaska and overseas territories excluded - a freight forwarder is required). Orders are confirmed by email immediately; we verify stock with the supplier before your card is charged. In-stock items ship within five business days, with tracking emailed within 24 hours of shipment. Typical lead time from purchase to delivery is 5-10 business days; freight transit is usually 4-6 business days. Minimum order value is $69.

  • Carriers: FedEx, UPS, USPS, Estes, Roadrunner.
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Return and refund policy

You have 30 days from the delivery date to initiate a return (35 days for orders placed Nov 25-30 and Dec 25-31). Items must be unused, in original packaging with tags attached, and returns require prior authorization from our team.

  • Damaged on arrival or wrong item: contact us within 24 hours of delivery (photos help) - we cover return shipping and issue a full refund or replacement.
  • Manufacturing defects: covered under the manufacturer's warranty - contact us for guidance.
  • Changed your mind: return shipping is the customer's responsibility and a 25% restocking fee may apply.
  • Cancelling before shipment: a 3% deduction covers platform fees.
  • Refunds are processed to the original payment method within approximately 10 days of the return being received and inspected.

To start a return: +1 (307) 317-7213, hello@ecosolarkits.com, or live chat. Read the full return and refund policy