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.
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RICH SOLAR ALPHA 5 48V 100Ah LiFePO4 Battery
RICH SOLAR ALPHA 5 48V 100Ah LiFePO4 Battery
SKU: RS-B4811
- Regular price
- $1,599.99
- Regular price
- Sale price
- $1,599.99
- Unit price
- per
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Legacy 48V rack storage with 4.8kWh per module
Build a larger 48V bank around a 100Ah rack battery and 100A BMS.
The RICH SOLAR ALPHA 5 is a 48V nominal, 100Ah LiFePO4 rack battery with 4.8kWh of energy, 100A continuous charge/discharge ratings and an RS485 communication connection. It is a different electrical platform from the newer 51.2V ALPHA 5 PRO and must be matched to equipment that supports its exact voltage and charge window.
At a glance
The numbers that define this system
4.8kWhNominal energy
48V / 100AhNominal rating
100AContinuous charge/discharge
92.6 lbBattery weight
Do not substitute ALPHA 5 PRO settings
The ALPHA 5 is 48V nominal with a 52.0–52.5V charge range. The ALPHA 5 PRO is 51.2V nominal and uses different charging limits and communication documentation.
System fit
Confirm the legacy 48V voltage window and exact inverter support.
This battery is IP20 and intended for a protected indoor environment. Verify inverter charging settings, communication, parallel limits, rack dimensions, DC protection and cable/busbar ratings before purchase.
Good-fit systemsCompatible 48V off-grid and stationary storage systems that explicitly support the ALPHA 5 voltage range and RS485 implementation.
Critical checks52.0–52.5V charge range, 42V discharge cutoff, indoor IP20 location, 100A current limits, rack fit, parallel configuration and handling of a 92.6 lb module.
In the box
What the current product configuration includes
- Selected quantity of ALPHA 5 48V 100Ah / 4.8kWh batteries
- 1 ft RS485 communication cable per battery
- Parallel cable set per battery
- Integrated BMS and rack-mount battery enclosure
Some multi-battery options include a rack, but RICH SOLAR publishes conflicting rack dimensions and weights. Contact Torven Power before ordering one of those bundles; we will confirm the rack model, dimensions, busbars and included equipment.
Product confidence
Five-year coverage for the black server-rack battery category.
RICH SOLAR’s current limited warranty lists five-year coverage for its black LiFePO4 server-rack battery category. The written prorated schedule, proof-of-purchase, installation, maintenance, exclusions and remedies control eligibility for the delivered ALPHA 5 revision.
Common questions
Before you build around this product
Is this the same as ALPHA 5 PRO?
No. This ALPHA 5 is 48V nominal and 4.8kWh. The ALPHA 5 PRO is 51.2V nominal and 5.12kWh with different settings and certifications.
How many cycles is it rated for?
RICH SOLAR states more than 7,000 cycles at 1C charge/discharge, 77°F and 80% depth of discharge. Actual life varies with operation and conditions.
Can it be installed outdoors?
The current page lists IP20, so it requires a protected environment. Do not treat it as an outdoor weatherproof battery.
Is a server rack included?
Some multi-battery options include a rack. Contact Torven Power before ordering one of those bundles, and we will confirm the exact rack model and included equipment.
Verified Manufacturer Data
Technical Specifications
Identity and electrical ratings
| Manufacturer / model | RICH SOLAR ALPHA 5 |
|---|---|
| SKU | RS-B4811, RS-B4812, RS-B4813, RS-B4814, RS-B4815, RS-B4816 |
| Chemistry | LiFePO4 / LFP |
| Nominal voltage | 48V |
| Nominal capacity | 100Ah |
| Minimum capacity | 95Ah |
| Current product-page minimum capacity | 99.5Ah |
| Nominal energy | 4800Wh |
| Datasheet energy label | 5kWh (rounded) |
| Charge voltage | 52.5V |
| Discharge cutoff voltage | 39V |
| Rated charge current | ≤30A at 25°C |
| Maximum charge current | 100A |
| Maximum discharge current | 100A |
| Self-discharge | <3% per month |
Temperature and storage
| Charging temperature | 0 to 45 °C |
|---|---|
| Discharging temperature | -20 to 50 °C |
| Storage temperature | -20 to 50 °C |
| Bms Charge High Protection C Typical | 65 |
| Bms Charge Low Protection C Typical | 0 |
| Bms Discharge High Protection C Typical | 70 |
| Bms Discharge Low Protection C Typical | -20 |
Physical, durability, and features
| Dimensions (L × W × H) | 19.0 × 17.7 × 5.2 |
|---|---|
| Dimensions (metric) | 483 × 450 × 133 |
| Weight | 92.6 lb |
| Weight (metric) | 42 kg |
| Enclosure | Sheet-metal rack enclosure |
| Ingress protection | Conflicted: official spec sheet says IP21; current official product description says IP20. Treat as indoor equipment. |
| Cycle life | Conflicted: official spec sheet says ≥4,000 cycles at 25°C, 0.2C/0.2C, 80% DOD; current official product page says >7,000 cycles at 77°F, 1C, 80% DOD. |
| Internal resistance | ≤30 mΩ at 50% SOC, 1kHz |
| Communication / monitoring | RS485 / RS232 / CAN; LCD display; inverter communication and battery parallel communication |
| Internal heating | No official heater claim found |
| Certifications | UN38.3 / MSDS listed on official spec sheet |
| Built-in DC circuit breaker | Yes |
Bank configuration and warranty
| Series connection | Not documented; do not market series use |
|---|---|
| Parallel connection | Official manual provides parallel cascading and address settings Pack0–Pack15; official product page says parallel expansion but gives no verified maximum |
| Configuration notes | Confirm the supported pack count and inverter protocol for the exact system before sale. |
| Warranty tier | ALPHA Series / server-rack battery |
| Warranty term | 5 years |
| Warranty summary | Current RICH SOLAR policy lists 5 years for ALPHA Series and for the black LiFePO4 server-rack battery; use 5 years pending written model-specific confirmation. |
Official product resources
| Specification Sheet | Download the official specification PDF |
|---|---|
| Owner’s Manual 2 | Download the official manual 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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Shipping & Returns
Orders may ship from manufacturer- or authorized-distributor-operated U.S. warehouses. Shipping method, eligibility, charges and delivery estimates are confirmed according to the current policy and order details.
Large battery and rack bundle configurations may require freight handling or delivery coordination. Carrier requirements, charges and delivery estimates are confirmed according to the current policy and order details.
Shipping Policy · Return & Refund Policy
RICH SOLAR
RICH SOLAR ALPHA 5 48V 100Ah LiFePO4 Battery
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