Next-Gen Rack-Mount Battery Modules: 57.6V LiFePO₄ Packs for 21” Enclosures

Next-Gen Rack-Mount Battery Modules: 57.6V LiFePO₄ Packs for 21” Enclosures

Next-Gen Rack-Mount Battery Modules: 57.6V LiFePO₄ Packs for 21” Enclosures

Quick intro. If you’re trying to squeeze more usable energy into a standard 21” cabinet without redesigning your whole system, this article is for you. We break down how 57.6V (18S) ultra-high-capacity LiFePO₄ modules (≈314Ah and up) fit a 533 mm × 700 mm rack footprint—and where they make the biggest difference in telecom, UPS and commercial ESS builds. For reference, see our classic 51.2V 100Ah rack battery and compare design choices.

Why it matters: more kWh in the same rack

  • Space efficiency. Higher voltage and Ah in a 533 mm width lets you upgrade within existing IT/ESS cabinets.
  • Modular scalability. Parallel multiple modules to grow from tens to hundreds of kWh with consistent pack geometry.
  • Integration speed. CAN-enabled BMS streamlines handshake with mainstream inverters and EMS.
  • Thermal headroom. Optional liquid cooling supports high-load or high-ambient deployments.

New to PKNERGY? Learn about us on the Company Profile and explore the full rack series starting from the proven 51.2V 100Ah platform.

At-a-glance specs for the 57.6V class

Nominal voltage 57.6V (18S LiFePO₄)
Rated capacity ≥ 314Ah (configurable higher)
Form factor 533 mm (W) × 700 mm (D), rack-ready
Cooling Air by default; liquid cooling optional for sustained ≥1C
Cells Grade-A prismatic (e.g., EVE or equivalent)
BMS Multi-pack parallel support, SOC averaging, CAN communication
Accessories Front connectors, mounting brackets, cable kit

Looking for a starting point or a mixed-voltage cabinet? Pair with our 51.2V 100Ah rack module in hybrid builds.

Where these modules shine

  • Telecom DC backup. High density for shelters and base stations with tight footprints.
  • Data-center edge/IDF rooms. More runtime per U with front-serviceable connectors.
  • Commercial ESS cabinets. Modular blocks to assemble 100–500+ kWh systems quickly.
  • UPS retrofits. Swap older chemistries for LiFePO₄ while keeping cabinet geometry.

Configuration tips for a clean cabinet build

  1. Define the bus voltage & redundancy. Match inverter/PCS input windows; decide N+1 module redundancy early.
  2. Plan thermal paths. If continuous ≥1C is expected or ambient >40 °C, spec the liquid-cooling option.
  3. Wire for serviceability. Use front-facing DC and comms; label interconnects per string.
  4. Unify BMS comms. Enable CAN; set IDs and SOC averaging across parallel packs to stabilize range prediction.
  5. Stage the rollout. Start with a core stack, then add shelves as load grows—no enclosure change needed.

Not sure which stack to pick? Compare against our mainstream 51.2V 100Ah rack solution for baseline cost-per-kWh and footprint.

Safety & compliance checklist

  • LiFePO₄ chemistry with robust thermal stability
  • Pack-level protections: OV/UV, OC/SC, OTP/UTP
  • Cabinet airflow or liquid loop per site conditions
  • Project documentation: test reports, shipping docs (e.g., UN38.3), installation guide

Need official paperwork for your market? Contact PKNERGY—we’ll prepare a compliance pack for your application.

Vendor landscape (for quick benchmarking)

When you research 57.6V high-Ah rack modules, you’ll see solutions from multiple ESS vendors. Use the spec table above to benchmark against PKNERGY’s cabinet-ready approach and serviceability features. If you’re standardizing globally, ask us about localized support via our regional partner network.

SEO corner: target keywords & internal paths

  • rack-mount LiFePO4 battery
  • 57.6V 314Ah battery pack
  • CAN BMS for Victron/ESS
  • liquid-cooled lithium battery module

Internal navigation: Home → About PKNERGY → Rack Batteries → Get a Quote

Final thoughts

57.6V, 314Ah-class LiFePO₄ modules are redefining what’s possible inside a 21” enclosure. The combination of higher energy density, CAN-smart BMS and optional liquid cooling means you can scale from pilot to production without changing your cabinet footprint.

Ready to spec your rack? Share your required kWh, discharge rate, and cabinet size. We’ll return a cabinet layout, BOM, and a quote.

Contact us or start from our rack battery series.

Author & sales contact

Cassie
Email: sale4@pknergy.com
WhatsApp/Tel: +86 13974604556


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