HOLO-R 21 kWh Server Rack Stack Battery
Four-module server rack stack battery for residential and small commercial solar storage.
CONLUXS HOLO-R-4 · 51.2V · 416Ah · 21.29 kWh · Rack stack
Product Overview
The HOLO-R-4-104 is a 21 kWh server rack stack battery built from four 5 kWh battery modules. Designed for rack-based installations, it provides a scalable storage platform for higher household loads and small commercial use. The pack can be expanded as needed and connected in parallel, with aerosol fire extinguishing protection and a smart BMS on automotive-grade LiFePO4 cells. CAN and RS485 communication covers mainstream 51.2V low-voltage inverters.
Key Performance Specifications
Key Technical Highlights
- Four-Module Stack: 21 kWh from four 5 kWh rack modules.
- Aerosol Fire Protection: Integrated aerosol extinguishing protection.
- Automotive-Grade Cells: Automotive-grade LiFePO4 cells for long life.
- 400A Peak Current: High charge and discharge current headroom.
- Expandable: Add modules or parallel packs as demand grows.
- CAN / RS485: Wide inverter compatibility.
What Is It
HOLO-R-4 is a 21 kWh server rack stack 51.2V LiFePO4 battery with aerosol fire protection, smart BMS and CAN/RS485 communication.
Key Applications
Server rack storage, small commercial solar, higher-load residential storage.
Engineering Advantages
| Advantage | Description |
|---|---|
| Four-Module Rack Design | 21 kWh capacity in a standard rack footprint. |
| Aerosol Fire Safety | Integrated aerosol extinguishing reduces fire risk. |
| Automotive-Grade Cells | Stable cycling from automotive-grade LiFePO4 cells. |
| High Current Capability | Up to 400A supports heavier loads. |
| Expandable Architecture | Modules and parallel packs scale with demand. |
Technical Specifications
| Item | Specifications |
|---|---|
| Rated energy(kWh) | 21KWh |
| Configuration | 4*1P16S |
| Nominal Voltage(V) | 51.2V |
| Nominal Capacity(Ah) | 416Ah |
| Working Voltage(V) | 42V~58.4V |
| Rated charge/discharge / Current(A) | 50A/100A @25±2℃ |
| Maximum charge/discharge current | 100A@25±2℃ |
| Working Temperature | 0～40℃(Charge) -20～40℃(Discharge) |
| Cycle life | 4800 cycles @25℃ 50A charge and discharge current 70% standard capacity 80% DOD |
| IP grade | IP20 |
| Communication mode | CAN&RS485 |
Suitable Inverters
| Brand | Protocol | Communication | Versions |
|---|---|---|---|
| Pylontech | CAN-Bus-Protocol-PYLON | CAN | V1.3 |
| Goodwe | Goodwe Communication Protocol | CAN | V1.5 |
| Lolis | CAN Communication Protocol | CAN | V1.0 |
| Sofar | BMS CAN BUS Protocol | CAN | V1.0 |
| SMA | FSS-ConnectingBat-TI-EN-20W | CAN | V2.0 |
| Victron | Can-Bus_Bms_Protocol | CAN | V1.0 |
| LUXPOWER | Luxpowertek Battery CAN Protocol | CAN | V1.0 |
| Studer | Technical Specification Studer BMS Protocol | CAN | V1.03 |
| TBB | TBB BMS CAN Communication V1.02 | CAN | V1.02 |
| Deye | CAN-Bus-Protocol-PYLON-V1.3 | CAN | V1.0 |
| Sorocec | 2_CAN Protocol 1.0 | CAN | V1.0 |
| MEGAREVO | Hybrid Inverter_5K_BMS Protocol V1.01 | CAN | V1.01 |
| Amensolar | CAN-Bus-Protocol-PYLON | CAN | V1.0 |
| MUST | PV1800F-CAN Communication Protocol | CAN | V1.04.04 |
| AFORE | Luxpowertek Battery CAN Protocol | CAN | V1.0 |
| Pylontech | RS485-Protocol-Pylon-Low-Voltage | 485 | V3.5 |
| Voltronic Power | Voltronic Inverter And BMS 485 Communication Protocol | 485 | V1.0 |
| SRNE | PACE BMS Modbus Protocol For RS485 | 485 | V1.3 |
| Deye | RS485-Protocol-Pylon-Low-Voltage | 485 | V1.0 |
Frequently Asked Questions
What is the rated energy of the HOLO-R-4-104?
21.29 kWh from four 5.32 kWh modules.
What safety features are included?
Aerosol fire extinguishing protection is integrated.
Which inverters are compatible?
CAN and RS485 communication with mainstream low-voltage inverters.
How is capacity expanded?
Add modules or connect packs in parallel.
What is the max current?
Up to 400A charge and discharge current.
Related Solutions
- lithium battery solutionsLithium Battery Products
- smart building energy solutionsSmart Building Solutions
Ready to Deploy HOLO-R 21 kWh Server Rack Stack Battery?
Download the complete HOLO-R 21 kWh Server Rack Stack Battery technical datasheet or contact our sales team for a custom configuration. Our engineering team will follow up within 48 hours.