51.2V 100Ah LiFePO4 Server Rack Battery 5.12kWh
The BSLBATT 51.2V 100Ah LiFePO4 server rack battery delivers 5.12kWh of reliable energy storage in a compact 3U rack-mount form factor. Compatible with standard 19" chassis, ideal for UPS, telecom, off-grid solar, and microgrid applications. 6000+ cycles at 95% DoD, 10-year warranty.
High-Performance 51.2V 100Ah Server Rack Battery by BSLBATT
The B-LFP48-100E 3U delivers 5.12kWh of usable energy in a compact server rack form factor. With a nominal voltage of 51.2V (industry-standard "48V" class), 100Ah capacity, and a 10-year warranty backed by BSLBATT technical support, this module is built for daily-cycling applications in residential solar storage, commercial microgrids, UPS backup, and telecom base stations.
The modular architecture supports up to 63 identical units in parallel, expanding total system capacity to 322kWh without replacing existing hardware. Each module can be wall-mounted, floor-mounted, or installed in standard server racks and battery cabinets, with IP20 protection and natural convection cooling.
With a rated charge current of 80A (4.096kW) and continuous discharge current of 100A (5.12kW), the B-LFP48-100E 3U handles high-power loads including air conditioning, EV chargers, and industrial equipment during peak-shaving or backup scenarios.
BSLBATT B-LFP48-100E
The BSLBATT B-LFP48-100E 3U is a 48V 100Ah LiFePO4 server rack battery with 5.12kWh of energy storage per module. It uses 16 prismatic LiFePO4 cells in a 16S1P configuration (51.2V nominal) and fits standard 19-inch server racks in a compact 3U form factor (483 x 540 x 136 mm, 46 kg). The integrated BMS supports CAN, RS485, RS232, WiFi, and Bluetooth communication for inverter integration and remote monitoring via the BSLBATT mobile app.
Each module supports up to 63 units in parallel, scaling system capacity to 322kWh. At 95% depth of discharge, the battery delivers over 6,000 cycles at 25°C with a 10-year manufacturer warranty. Certified to UL1973, IEC62619, CE, and listed on the Australia Clean Energy Council (CEC) approved battery list.
Compatible with 30+ inverter brands including Victron, Deye, Growatt, SMA, Goodwe, and Solis. Designed and manufactured by BSLBATT in Huizhou, China, with OEM, ODM, and white-label services available for solar installers, telecom operators, and energy storage integrators.
Safety
- Cobalt-free LiFePO4 chemistry: no thermal runaway risk
- Optional built-in aerosol fire suppression for enclosed rack installations
- UL1973, IEC62619, CE certified; CEC approved (Australia)
Reliability
- 1C continuous discharge rate (100A / 5.12kW per module)
- 6,000+ cycle life at 95% DoD, 25°C
- 15+ year design life
Flexibility
- Up to 63 modules in parallel (322kWh max system capacity)
- 3U rack-mount, wall-mount, or floor-mount installation
- Compatible with BSLBATT DC Combiner Boxes (4/6/8-input)
Monitoring
- WiFi and Bluetooth connectivity for BSLBATT APP remote monitoring
- Real-time cell voltage, temperature, and SOC data via CAN/RS485
- Remote firmware upgrade (OTA one-click update)
Key Features of the B-LFP48-100E 3U
Module-Level Auto-Balancing: The BMS continuously monitors and balances all 16 cells to maintain consistent capacity and extend cycle life across the battery pack.
30+ Inverter Compatibility: Pre-configured CAN and RS485 communication protocols for Victron, Deye, Growatt, Goodwe, SMA, Solis, Schneider, Sofar, and 20+ additional brands. Plug-and-play integration with protocol selection via BMS settings.
Tier-1 Prismatic LFP Cells: Automotive-grade A+ cells selected and matched for capacity and internal resistance consistency. Cobalt-free chemistry with zero thermal runaway risk.
95% Depth of Discharge: Delivers 4,864Wh of usable energy per cycle from a 5,120Wh total capacity, maximizing the return on each module.
UL1973 + IEC62619 + CEC Triple Certified: Independent safety testing for North American (UL), international (IEC), and Australian (CEC) markets.
AC Coupled Compatible: Suitable for both new solar installations and retrofit projects, working with AC-coupled hybrid inverter configurations.
Who Is the 51.2V 100Ah Server Rack Battery For?
Solar Installers and System Integrators
The 3U rack-mount form factor, 30+ inverter compatibility, and UL1973/IEC62619/CEC triple certification make the B-LFP48-100E 3U a drop-in solution for residential and light commercial solar-plus-storage projects across North American, European, Australian, and African markets. CEC listing is required for eligible solar battery installations under Australian state rebate programs.
Telecom Operators and Data Centers
For telecom base stations and small data center UPS applications, the 48V architecture matches standard telecom power systems. The modular design allows capacity to scale with site requirements, and WiFi/Bluetooth monitoring enables centralized fleet management.
Off-Grid and Microgrid Developers
For island microgrids, rural electrification, and off-grid mining or agricultural operations, the 63-unit parallel expansion (322kWh) and -20°C to 55°C discharge range provide the scale and temperature tolerance these projects demand.
Distributors and OEM Partners
BSLBATT offers factory-direct pricing, white-label branding, custom BMS firmware, and private-label packaging for distributors building their own energy storage product lines.
Compatible Inverter Brands
The B-LFP48-100E 3U supports CAN and RS485 communication protocols and is pre-configured with tested firmware for 30+ inverter brands.
CAN protocol (20 brands):
CAN protocol (20 brands): Pylontech · Deye/Sunsynk · Growatt · Victron Energy · Luxpower · SMA · Goodwe · Studer · Sofar Solar · Ginlong/Solis · TBB Power · Donnergy · Aiswei · SAJ · Sorotec · MUST · Megarevo · Schneider Electric · Afore · Solax
RS485 protocol (18 brands):
Pylontech · Deye/Sunsynk · Growatt · Voltronic Power · Phocos · Luxpower · SRNE · Sorotec · HYPONTECH · SUNPLAIN/OLU · Epever · Talegent · Eltek · Techfine · SMK Solar · Gospower · AOHAI · Sungery
For inverter-specific wiring diagrams, BMS protocol versions, and DIP switch settings, refer to the Product Manual or contact BSLBATT for technical support.
Factory-Direct Pricing for Installers and Distributors
BSLBATT manufactures the B-LFP48-100E 3U at its own production facility in Huizhou, China. Solar installers, energy storage distributors, and OEM/ODM partners can work directly with the factory for competitive pricing.
Contact the BSLBATT sales team for a project-specific quotation.
B-LFP48-100E: How to Choose a 48V 100Ah Server Rack Battery
Not all 48V 100Ah server rack batteries are built the same. Here are the key specifications to compare before making a purchase decision.
95% Depth of Discharge (DoD)
DoD determines how much of the battery's total capacity is actually usable. A higher DoD means more energy per cycle. The B-LFP48-100E 3U offers 95% DoD (4,864Wh usable from 5,120Wh total). When comparing products, check whether the stated capacity is total or usable.
Cell Configuration (16S vs 15S)
A true 48V-class LiFePO4 battery uses 16 cells in series (16S, 51.2V nominal). Before purchasing, verify the cell count in the product specification. A 15S configuration (48.0V nominal) may cause charge voltage mismatches with inverters designed for the 51.2V standard.
Inverter Compatibility
Check how many inverter brands and communication protocols the battery supports. The B-LFP48-100E 3U comes with pre-configured firmware for 30+ brands across both CAN and RS485 protocols, reducing commissioning time on site.
WiFi + Bluetooth + APP Monitoring
Some server rack batteries require a separate gateway or hub for remote monitoring. The B-LFP48-100E 3U includes built-in WiFi and Bluetooth with the BSLBATT mobile app, allowing installers and homeowners to monitor cell-level data and system health directly from a phone.
UL1973 + IEC62619 + CEC Triple Certification
Look for independent third-party safety certifications relevant to your market. The B-LFP48-100E 3U carries UL1973 (North America), IEC62619 (international), and is listed on the Australia CEC approved battery list.
Parallel Expansion
If you plan to scale the system over time, check the maximum number of modules that can be connected in parallel. The B-LFP48-100E 3U supports up to 63 units (322kWh total).
Frequently Asked Questions
Q1: What is the difference between 48V and 51.2V server rack batteries?
A: They are the same thing. A "48V" LiFePO4 battery uses 16 cells in series (16 x 3.2V = 51.2V nominal). The "48V" label is an industry convention inherited from lead-acid systems (24 cells x 2V = 48V). The B-LFP48-100E 3U has a nominal voltage of 51.2V, an operating range of 44.8V to 56.4V, and is fully compatible with all equipment designed for the 48V voltage class.
Q2: How many B-LFP48-100E 3U modules do I need?
A: It depends on your daily energy consumption and backup duration target. A typical household using 20kWh per day needs 4 modules (20.48kWh total) for overnight solar self-consumption. For essential-load backup only (lights, refrigerator, router), 1 to 2 modules (5 to 10kWh) are usually sufficient. For commercial or telecom applications, your system integrator can calculate requirements based on peak load and autonomy hours.
Q3: Can I mount this battery on a wall instead of a rack?
A: Yes. The B-LFP48-100E 3U supports wall-mount, floor-mount, and standard 19-inch rack cabinet installation. Wall-mount brackets are included or available as an accessory. For systems with 4 or more modules, rack cabinet installation is recommended for easier cable management and maintenance access.
Q4: Does this battery work with my inverter?
A: The B-LFP48-100E 3U supports CAN and RS485 communication protocols with pre-configured firmware for 30+ inverter brands, including Victron, Deye, Growatt, Goodwe, SMA, Solis, Schneider, Sofar, Luxpower, and Studer. The default CAN protocol is set to Victron and the default RS485 protocol is set to Pylon, both configurable via BMS settings. Check the Compatibility Statement from the Product Manual section above for the full list with protocol versions.
Q5: What is the difference between the 3U and 4U versions?
A: Both are 48V 100Ah (5.12kWh) LiFePO4 modules with the same cell chemistry and BMS architecture. The 3U version is more compact (3 rack units vs 4), includes WiFi and Bluetooth as standard (optional on 4U), offers 95% DoD (vs 90% on 4U), and has a higher rated charge current (80A vs 50A). The 3U is the current-generation product recommended for new installations.
Q6: Can I mix the B-LFP48-100E 3U with batteries from other brands?
A: No. All parallel-connected modules must be the same model, capacity, and firmware version to ensure balanced current sharing and safe BMS coordination. Mixing different brands, models, or firmware versions can cause overcurrent faults and will void the warranty.
Q7: What monitoring options are available?
A: The B-LFP48-100E 3U includes built-in WiFi and Bluetooth connectivity. The BSLBATT mobile app provides real-time monitoring of cell voltages, temperature, state of charge (SOC), charge/discharge current, and system alerts. Firmware can be updated remotely via OTA (over-the-air) one-click upgrade. For multi-site commercial deployments, CAN/RS485 data can be integrated into SCADA or cloud-based fleet management platforms.
Q8: Is this battery suitable for UPS and telecom backup?
A: Yes. The 48V architecture matches standard telecom power systems (ETSI/ITU specifications). The 1C continuous discharge rate (100A / 5.12kW), fast charge capability (80A), and UL1973/IEC62619 dual certification make the B-LFP48-100E 3U suitable for telecom base station backup, small data center UPS, and critical infrastructure power systems. The IEC62040 test report is available in the Downloads section.
| Model | B-LFP48-100E 3U | |
| Battery Type | LiFePO4 | |
| Nominal Voltage (V) | 51.2 | |
| Nominal Capacity (wh) | 5120 (5.12 kWh) | |
| Usable Capacity (wh) | 4864 (4.86 kWh) at 95% DoD | |
| Cell & Method | 16S1P | |
| Dimension (W*D*H) | 483(442)*540*136 mm | |
| Weight (Kg) | 46 | |
| Discharge Voltage (V) | 47 | |
| Charge Voltage (V) | 55 | |
| Charge | Rated Current / Power | 80A / 4.096kW |
| Peak Current / Power | 110A / 5.632kW | |
| Discharge | Rated Current / Power | 100A / 5.12kW |
| Max.Current / Power | 120A / 6.144kW, 1s | |
| Peak Current / Power | 150A / 7.68kW, 1s | |
| Communication | RS232 · RS485 · CAN · WIFI · Bluetooth | |
| Depth Of Discharge | 95% | |
| Expansion | Up to 63 units in parallel | |
| Working Temperature | Charge | 0~55 ℃ |
| Discharge | -20~55 ℃ | |
| Storage Temperature | 0~35 ℃ | |
| Short Circuit Current / Duration Time | Enable | |
| Cooling Type | Nature | |
| Protection Level | IP20 | |
| Warranty | 10 Years | |
| Design Life | >15 Years (25 ℃ /77℉) | |
| Cycle Life | >6000 Cycles, 25 ℃ | |
| Certification & Safety Standard | UN38.3, CE, IEC62619, UL1973, CEC | |
