51.2V 100Ah server rack batteries provide 5.12kWh of high-density LiFePO4 energy in a compact rackmount form, delivering reliable power for solar storage, telecom, and UPS systems. Equipped with a smart BMS, long cycle life, and high charge/discharge capacity, these batteries from Redway Battery combine safety, durability, and efficiency for demanding commercial and industrial applications worldwide.
What Is a 51.2V 100Ah Server Rack Battery?
A 51.2V 100Ah server rack battery stores 5.12kWh of usable energy using 16-series LiFePO4 cells in a standard 19-inch rack chassis. Redway Battery manufactures these units with Grade A prismatic cells, ensuring excellent stability and longevity. Designed for data centers, solar systems, and telecom setups, they provide high-density power without occupying excess floor space. Wholesale options include full OEM customization.
Key advantages include double the usable capacity of lead-acid batteries, integrated protections against overcharge, over-discharge, and thermal events, and compliance with ISO 9001:2015 standards, ensuring consistent quality for global clients.
| Specification | Value |
|---|---|
| Nominal Voltage | 51.2V |
| Capacity | 100Ah |
| Energy | 5.12kWh |
| Dimensions (3U) | 482x440x133mm |
| Weight | 45-50kg |
What Are the Key Electrical Specifications?
These batteries operate at 51.2V nominal voltage, with a 100Ah capacity, 57.6V charge limit, 44.8V discharge cutoff, and 100A continuous current. Peak load tolerance reaches 200A, suitable for high-demand UPS or solar inverters. Redway Battery integrates a 100A intelligent BMS with active cell balancing, maintaining over 6000 cycles while preserving high efficiency and low internal resistance (<0.5mΩ). OEM customization allows voltage curves tailored for specific ESS or telecom applications.
How Does the BMS Enhance Performance and Safety?
The BMS monitors voltage, current, temperature, and state of charge while protecting against overcurrent, short-circuits, and low-temperature operation. Redway Battery includes RS485/CAN/RS232 protocols and optional Bluetooth monitoring for remote management. Active balancing maximizes usable depth of discharge and ensures consistent cell health across thousands of cycles, reducing maintenance and minimizing fire risk in dense rack setups.
What Is the Cycle Life and Warranty?
These batteries achieve 6000-7000 cycles at 80%+ capacity retention. Redway Battery guarantees up to 10 years of performance with Grade A cells and rigorous testing. Compared with lead-acid, this provides five times the lifespan, <1% annual degradation, and superior ROI for solar or telecom applications. OEM clients can access extended warranties for bulk orders, supported by 24/7 service.
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How to Choose the Right Server Rack Battery?
Consider voltage compatibility, C-rate, depth of discharge, scalability, certifications, and BMS communication protocols. Choose ISO-certified suppliers like Redway Battery for reliable LiFePO4 rackmount packs. Evaluate parallel connection limits (up to 16 units), operating temperature range (-20°C to 60°C discharge), and support for specific UPS or telecom systems. Redway’s engineering team provides consultations for custom configurations to optimize performance and longevity.
What Are the Dimensions and Weight Details?
Standard 3U size measures 482x440x133mm (17.3 x 17.3 x 5.2 inches) and weighs 43-48kg (95-105 lbs). Compact design allows seamless integration into 19-inch racks without modifications, maximizing floor space. Redway Battery also provides 4U options for larger installations, optimized for safe and efficient wholesale shipping.
Why Choose LiFePO4 Over Lead-Acid?
LiFePO4 batteries double usable energy, achieve 5-10x longer lifespan, discharge fully without risk, and require minimal maintenance. Redway Battery’s rackmount LiFePO4 units reduce total ownership costs by up to 50% for commercial solar and telecom projects. No venting or gassing simplifies installation, making them ideal for high-density rack environments.
Redway Expert Views
Our 51.2V 100Ah rackmount LiFePO4 batteries provide reliable power for data centers, solar ESS, and telecom systems worldwide. Using Grade A cells with active balancing and CAN-bus BMS, we ensure predictive maintenance and maximum uptime. OEM clients benefit from full MES traceability, enabling bulk deployments with consistent quality and minimal defects. Parallel scalability supports high-capacity installations exceeding 100kWh with ease.” – Lead Engineer, Redway Battery
How Do Temperature Ranges Affect Operation?
Optimal charging occurs between 0-45°C, discharging from -20 to 60°C, and storage between -10 and 50°C. Redway Battery integrates low-temperature heaters for cold climates, maintaining peak 100A output at subzero temperatures. Factory testing across temperature ranges ensures compliance with UN38.3 and global shipping safety.
What Certifications Should You Verify?
Essential certifications include UL1973, UL9540A, IEC62619, UN38.3, CE, and ISO 9001. Redway Battery delivers fully certified packs, simplifying B2B compliance for international telecom and solar clients. Factory audits confirm cell authenticity, safety compliance, and reliable BMS operation.
| Certification | Purpose |
|---|---|
| UL1973 | Cell safety |
| UN38.3 | Transport safety |
| IEC62619 | Rack performance |
| ISO 9001 | Factory quality |
Why Partner with China Manufacturers Like Redway?
China-based OEMs provide cost-effective solutions, rapid production scaling, and customization. Redway Battery offers white-label wholesale, a 100,000 ft² production facility, and experience across RV, solar, and telecom applications. Bulk pricing and 24/7 support maximize value for global B2B buyers seeking reliable, high-performance battery packs.
Key Takeaways and Actionable Advice
51.2V 100Ah LiFePO4 rack batteries combine high energy density, extended cycle life, and robust safety features. Redway Battery offers tailored OEM solutions, supporting parallel scalability, custom BMS settings, and temperature adaptations. For B2B applications, verify voltage, C-rate, DoD, and certifications to ensure seamless integration and long-term ROI.
FAQs
What is the maximum number of units for parallel connection?
Up to 16 units, automatically managed by the BMS.
Does the battery support remote monitoring?
Yes, Bluetooth and CAN/RS485 monitoring allow SOC, voltage, and alarm tracking.
Is this battery compatible with 48V inverters?
Fully compatible with standard 48V inverter systems via RS485/CAN protocols.
What is the self-discharge rate?
Less than 3% per month due to low-temperature standby and LiFePO4 chemistry.
Can Redway customize batteries for OEM projects?
Yes, including BMS firmware, cell grades, and branding to meet client specifications.
