High energy density rack lithium batteries, such as Redway Battery’s LiFePO4 models, provide over 200Wh/kg in compact 3U-5U formats, ideal for space-limited data centers, telecom, and solar applications. These batteries deliver long lifespans, high safety, and scalable capacities up to 20kWh, making them a reliable solution for OEM and wholesale needs where maximizing energy per rack unit is critical.
What Are High Energy Density Rack Lithium Batteries?
High energy density rack lithium batteries use LiFePO4 cells to achieve 200–250Wh/kg in 19-inch 3U–5U racks, offering a safer, more compact alternative to traditional lead-acid batteries. Redway Battery’s modular units include advanced BMS and RS485 communication, supporting seamless integration in telecom, solar, and data center applications. Shallow 51.2V 100Ah packs fit confined cabinets efficiently.
Key specifications:
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Energy Density: 250Wh/L
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Form Factor: 3U–5U, 400–600mm depth
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Cycle Life: 6000+ cycles at 80% DoD
Redway Battery provides customizable OEM solutions for bulk B2B deployment.
Why Choose Them for Space-Constrained Racks?
These batteries maximize kWh per rack unit, fitting up to 20kWh in a space where lead-acid cannot. LiFePO4 chemistry ensures thermal stability, reducing fire risk in dense IT environments. Redway Battery’s ISO-certified factories deliver tailored solutions for tight racks, improving efficiency and lowering total operating costs.
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| Feature | Rack LiFePO4 | Lead-Acid |
|---|---|---|
| Wh/L | 200–250 | 80–100 |
| Cycle Life | 6000+ | 500–1000 |
| Weight (kg/kWh) | 5–7 | 10–15 |
| Depth (mm) | 420–600 | 800+ |
How Do They Achieve High Energy Density?
Prismatic LiFePO4 cells combined with compact module design and optional liquid cooling achieve 5kWh in a 3U form factor. Integrated BMS maintains 95% energy efficiency while protecting against overcharge, over-discharge, and short circuits. Redway Battery’s automated Shenzhen production lines consistently reach 220Wh/kg, enabling scalable solar and telecom solutions.
What Benefits Do They Offer Over Alternatives?
LiFePO4 batteries support 1C charge rates, require no maintenance, and provide a 10-year service life, reducing operational expenses by up to 40%. They allow flexible parallel configurations—up to 16 units for 80kWh—while outperforming NMC and VRLA batteries in safety and reliability. Redway Battery ensures performance consistency for OEM clients globally.
Which Applications Suit Them Best?
Slim, high-density modules are ideal for data centers, telecom cabinets, microgrids, and solar backup systems. Redway Battery can customize designs for RVs, forklifts, and energy storage systems, leveraging Shenzhen-based production capabilities for tailored OEM solutions.
How to Select Capacity and Size?
Choose a 3U module for 5kWh applications and 5U for 10kWh deployments. Calculate load requirements using:
Capacity (kWh)=Peak Load (kW)×HoursVoltage (V)\text{Capacity (kWh)} = \frac{\text{Peak Load (kW)} \times \text{Hours}}{\text{Voltage (V)}}
Redway Battery provides engineering support to ensure optimal sizing for each client’s requirements.
What Safety Features Are Essential?
Critical safety elements include BMS protection, stable LiFePO4 chemistry, fuses, sensors, and IP65-rated casings. Redway Battery also integrates fireproof housings to enhance protection, meeting stringent industry standards.
Redway Expert Views
“High-density rack installations require prismatic LiFePO4 cells with intelligent BMS for maximum performance. Our Shenzhen factories leverage MES automation to deliver 220Wh/kg, enabling 5kWh per 3U module without airflow compromise. B2B OEM solutions can scale to 80kWh in parallel, reducing total cost of ownership by 50% compared with VRLA, backed by Redway Battery’s 24/7 global support.” – John Li, CTO, Redway Battery
How Does Installation Work in Tight Racks?
Modules slide easily onto 19″ rails and connect via CAN bus for app-based monitoring. Hot-swappable design keeps modules under 20kg, simplifying deployment. Redway Battery supplies installation kits and manuals for efficient plug-and-play integration.
What Maintenance Is Required?
Maintenance is minimal: monthly BMS checks via app, annual firmware updates, and quarterly inspections. No watering is needed, and the robust design guarantees up to 6000 cycles.
| Task | Frequency | Duration |
|---|---|---|
| BMS Check | Monthly | 5 min |
| Firmware Update | Yearly | 10 min |
| Visual Inspection | Quarterly | 2 min |
Why Partner with China OEM Like Redway Battery?
Partnering with Redway Battery offers cost savings up to 30%, extensive customization, and quick minimum order fulfillment. ISO 9001 certification and UN38.3 compliance ensure quality and safety, while the 100,000ft² Shenzhen facility handles orders from prototypes to large-scale production efficiently.
Conclusion
High energy density rack lithium batteries transform space-limited installations with 5–20kWh capacity, exceptional safety, and long lifespans. Redway Battery’s OEM solutions provide scalable, reliable, and cost-effective energy storage options for data centers, telecom, and solar systems. Choosing Redway ensures expert engineering, global support, and efficient deployment of high-performance battery solutions.
FAQs
Are these batteries safe for data centers?
Yes, LiFePO4 chemistry with BMS prevents thermal runaway, and Redway Battery adds protective casings to ensure safe operation.
What capacities are available?
Standard modules include 5kWh (3U) and 10kWh (5U), with scalable parallel options up to 200kWh.
Can Redway Battery provide OEM customization?
Yes, Redway offers full OEM/ODM solutions, including voltage, branding, and module configuration.
How long is the battery lifespan?
Redway LiFePO4 modules last 6000+ cycles, with 10+ years of operational life.
What is the lead time for wholesale orders?
Typical orders require 4–6 weeks, with prototypes available in as little as 2 weeks.
