Home Capabilities 19" Rack Modules

Rack Storage · 19-Inch 4U Format

19-Inch Rack Battery Modules for UPS, Solar & C&I

51.2V 100Ah 4U modules — the industry-standard 5.12 kWh block, the same platform as the Pylontech US5000 and Dyness DL5.0 — paralleling to 16 units per cabinet (81.92 kWh) and beyond. UL 1973-ready design, CAN/RS485 inverter protocols, and SNMP, LCD and anti-theft options for the UPS room.

Rack battery module assembly line in the EMS-ESS Shenzhen factory

19" Rack Modules

5.12 kWh Blocks to 81.92 kWh

The 51.2V 100Ah 4U module paralleling to 16 units per cabinet, UL 1973-ready.

19-inch rack-mount battery module in studio product photography

Line Overview

The Standard Block, Built on A-Grade Prismatic Cells

Lithium penetration in data centers climbed from 10.6% in 2020 to 35% in 2025, while lead-acid still holds about half of the UPS battery market. The replacement math is blunt: lithium UPS batteries run 10–15 years against 3–6 for VRLA, and batteries make up 35–50% of UPS total cost of ownership — which is why the 51.2V 100Ah 4U block became the volume standard.

  • Standard 16S platform — 51.2V 100Ah on EVE LF280K or CATL 314Ah A-grade prismatic cells, the same spec as the US5000 and DL5.0 class.
  • Parallel scaling — 16 modules per cabinet = 81.92 kWh; high-density builds reach 32 modules (163.84 kWh) and engineered systems scale to 322 kWh.
  • UPS-room options — SNMP network cards, LCD status panels and gyroscope-based anti-theft alarms.
  • Protocol coverage — CAN/RS485 profiles for solar and hybrid inverters, plus UPS integration for Eaton, Vertiv and Schneider platforms.
  • Service economics — 6,000 cycles and a 10-year warranty against VRLA's 3–6 year replacement cycle.
Data Center Market Data

Specifications

51.2V 100Ah Rack Module — Datasheet

ParameterSpecification
Format19-inch 4U (3U variants available)
Configuration16S LiFePO4 · 51.2V 100Ah
Energy5.12 kWh per module
Voltage window41–58.4V (charge 57.6–58.4V)
Current100A continuous · 200A peak 10s
Cycle life6,000 @90–95% DoD, 25°C
Parallel16 units = 81.92 kWh · 32-unit builds = 163.84 kWh · systems to 322 kWh
CommunicationCAN / RS485 inverter protocols · SNMP, LCD, gyroscope anti-theft options
Installationstandard server rails, tool-free maintenance
CertificationsUN38.3 · CE · UL 1973-ready design (per-project program)
Warranty10 years
16modules in parallel per cabinet
81.92 kWhstorage per 16-module cabinet
10 yearswarranty, vs 3–6 for VRLA
6,000cycles at 90–95% DoD

Buyer Questions

Rack Storage, Answered by the Numbers

How many modules can one cabinet run?
Sixteen 51.2V 100Ah modules parallel to 81.92 kWh in a standard cabinet — the sizing that covers most mid-size C&I peak-shaving loads. High-density configurations reach 32 modules (163.84 kWh), and engineered systems scale to 322 kWh for larger sites.
Will the modules integrate with our UPS platform?
CAN/RS485 communication is standard, with integration profiles worked for Eaton, Vertiv and Schneider UPS platforms. Protocol mapping is done in our firmware, and SNMP network cards bring the battery bank into your existing DCIM monitoring as a managed node.
What is the UL 1973 status?
Modules are built to UL 1973-ready design rules, and certification runs as a per-project program with your brand on the label. UL 1973 is the battery-level safety certification for US stationary ESS and the prerequisite for UL 9540 system listing — the chain AHJs and insurers ask about.

All 20+ buyer FAQs →

EMS-ESS factory floor at dusk with work lights

Size a Rack Storage Program

Target kWh, inverter or UPS platform, annual volume — you get a module count, cabinet layout and unit pricing within 24 hours.