How to Choose a 48V Server Rack LiFePO4 Battery
Compare 48V-class server-rack LiFePO4 batteries by kWh, current, heating, communications, rack size and inverter compatibility—with practical sizing steps.
Read the guide →RICH SOLAR
RICH SOLAR ALPHA 5 PRO 51.2V 100Ah Rack Battery
RICH SOLAR ALPHA 5 PRO 51.2V 100Ah Rack Battery
SKU: RS-B5121P
- Regular price
- $1,799.99
- Regular price
- Sale price
- $1,799.99
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Certified 5.12kWh rack-mount storage
Build a scalable 48V-class battery bank with app monitoring and documented inverter protocols.
The RICH SOLAR ALPHA 5 PRO is a 51.2V, 100Ah LiFePO4 rack battery with 5.12kWh of nominal energy, a 100A charge/discharge rating, Wi-Fi and Bluetooth monitoring, front-panel status, and RS485/RS232/CAN communications. It is designed for residential, commercial, RV and off-grid storage systems that can support its voltage and communication requirements.
At a glance
The numbers that define this system
5.12kWhNominal energy
51.2V / 100AhNominal rating
100AMax charge & discharge
3URack-mount form factor
Select the exact communication protocol before commissioning
Select the RICH SOLAR RS485 or CAN protocol specified for your compatible inverter family before commissioning. Compatibility depends on the exact inverter model and firmware version.
System fit
Confirm inverter protocol, charge settings and rack infrastructure as one system.
A 48V-class battery is not a universal drop-in replacement. Verify the inverter’s supported battery voltage, charge profile, continuous and surge current, communication protocol, firmware and cable requirements before purchase.
Good-fit systems48V hybrid and off-grid systems needing modular rack storage, monitoring and closed-loop communication supported by both manufacturers.
Installation checksSupported protocol code, 57.6V maximum charge setting, DC protection, cable and busbar rating, rack clearance, ventilation, lifting plan and code compliance.
In the box
What the current product configuration includes
- Selected quantity of ALPHA 5 PRO 51.2V 100Ah battery modules
- Battery-integrated LCD, LED indicators, Wi-Fi and Bluetooth monitoring hardware
- RS485, RS232 and CAN communication ports
- Built-in circuit breaker and BMS/FET protection described by RICH SOLAR
- Rack handles and standard 3U metal enclosure
The optional six-slot battery cabinet is a separate product unless the selected bundle explicitly includes it. Contact Torven Power before ordering if you need us to confirm the parallel cables, communication leads, rack hardware or other accessories included with your selected option.
Product confidence
Backed by a 10-year RICH SOLAR limited warranty.
The ALPHA 5 PRO is backed by RICH SOLAR’s 10-year limited warranty. Coverage, eligibility, registration requirements, exclusions and remedies follow RICH SOLAR’s current written warranty terms.
Common questions
Before you build around this product
How much energy does one battery store?
One module stores 5.12kWh nominal at 51.2V and 100Ah. Usable energy depends on system settings, temperature, load and operating limits.
Can I connect it to any 48V inverter?
No. Confirm voltage range, charging profile, current, protocol, firmware and wiring compatibility with both RICH SOLAR and the inverter manufacturer.
Does the battery cabinet come with one battery?
Not automatically. The optional six-slot cabinet is separate unless the selected bundle explicitly includes it. The product options show what you are choosing, and Torven Power can confirm the included equipment before you order.
What does 7,000+ cycles mean?
RICH SOLAR states 7,000+ cycles at 80% depth of discharge for the ALPHA 5 PRO cells. Actual life varies with temperature, charge/discharge rate, depth of discharge and system operation.
Verified Manufacturer Data
Technical Specifications
Identity and electrical ratings
| Manufacturer / model | RICH SOLAR ALPHA 5 PRO |
|---|---|
| SKU | RS-B5121P, RS-B5121P-2, RS-B5121P-3, RS-B5121P-4, RS-B5121P-5, RS-B5121P-6 |
| Chemistry | LiFePO4 / LFP |
| Nominal voltage | 51.2V |
| Nominal capacity | 100Ah |
| Minimum capacity | 99.5Ah |
| Nominal energy | 5120Wh |
| Recommended Charging Voltage V | 56V |
| Bms Max Charge Voltage V | 57.6V |
| Discharge cutoff voltage | 44.8V |
| Standard charge current | 20A |
| Maximum charge current | 100A |
| Standard discharge current | 50A |
| Maximum continuous discharge current | 100A |
| Maximum discharge current | 100A |
Temperature and storage
| Charging temperature | 0 to 60 with C-rate derating (0.1C at 0–10°C; 0.2C at 10–20°C; 0.5C at 20–25°C; 1.0C at 25–45°C; 0.3C at 45–55°C; 0.2C at 55–60°C) °C |
|---|---|
| Discharging temperature | -20 to 65 °C |
| Storage 1 Month C | -20 to 45 at ≤90% RH °C |
| Storage 6 Months C | 0 to 35 at ≤90% RH °C |
| Recommended long-term storage | 0 to 35 at ≤85% RH °C |
| Low Temperature Charge Protection | Charging off below 0°C / 32°F |
Physical, durability, and features
| Dimensions (L × W × H) | 17.7 × 17.8 × 5.2 |
|---|---|
| Weight | 99.2 lb |
| Enclosure | Sheet-metal 3U rack-mount casing |
| Ingress protection | Not stated in the official specification sheet; treat as indoor equipment |
| Cycle life | ≥7,000 cycles at 25°C ±2°C with ≥70% capacity retention |
| Monthly self-discharge | ≤5% |
| Initial internal resistance | ≤50 mΩ |
| Communication / monitoring | CAN/RS485 to inverter; RS232 to PC; RS485 for battery-to-battery parallel communication; LCD/touch display and remote monitoring support |
| Internal heating | Not stated; official spec documents low-temperature charge protection only |
| Certifications | UL 1973 (official certificate), UL 9540A claim in official product title |
| Built In Circuit Breaker | Yes |
Bank configuration and warranty
| Series connection | Prohibited by the official manual |
|---|---|
| Parallel connection | Up to 15 batteries / 76.8kWh while maintaining BMS communication |
| Configuration notes | Use supported closed-loop inverter protocol and set unique battery addresses. |
| Warranty tier | ALPHA PRO Series |
| Warranty term | 10 years |
| Warranty summary | Limited prorated warranty; years 1–3 full replacement, years 4–10 prorated under the current schedule. |
Official product resources
| Specification Sheet | Download the official specification PDF |
|---|---|
| Owner’s Manual 2 | Download the official manual PDF |
| Official Document 3 | Download the official certificate PDF |
| Official Document 4 | Download the official communication protocol PDF |
| Official Document 5 | Download the official quick-start guide PDF |
| Current warranty policy | Review RICH SOLAR’s current warranty terms |
Review the current manufacturer manual for your exact model before installation or use.
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Ordering Information
Shipping & Returns
Shipping: Shipping method, availability, and delivery timing are confirmed during order review. Batteries, panel pallets, and large kits may require freight delivery, an appointment, or receiving coordination.
Returns: Eligibility, timing, product-condition, freight, and restocking terms vary by item. Review the current Shipping Policy and Return & Refund Policy before ordering.
RICH SOLAR
RICH SOLAR ALPHA 5 PRO 51.2V 100Ah Rack Battery
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