High-Voltage Rack Battery Cluster for C&I Energy Storage (3U 51.2V 100Ah Modules)

LJY-HVR-CLUSTER high-voltage LiFePO4 rack battery cluster with 3U 51.2V 100Ah modules, front view, white background — Appearance, color and logo customizable per customer request.

Product Overview

A high-voltage rack battery cluster built from 3U 51.2V 100Ah (5.12kWh) LiFePO4 modules connected in series in a rack, with a master control box (high-voltage BMS, pre-charge, contactors, breaker). Common cluster sizes run from 5 modules (256V) to 12 modules (614.4V), matched to the battery-voltage window of a C&I hybrid inverter or PCS.

Integrators and distributors re-order the same 3U module and control box across projects of 30–60kWh per cluster and scale with parallel clusters. It sits between our residential HV stackable battery and the outdoor 215kWh C&I cabinet, and differs from low-voltage 48V rack modules, which are connected in parallel.

Appearance, color and logo customizable per customer request.

Request a Quote

WhatsApp: +1 404 784 1946 (backup: +86 159 8945 0735)

Specifications

How to read Status — three classes: [Industry reference] = standard reference parameter common to this product class (not an LJY test result). [Optional configuration] = configurable per OEM/ODM project (BMS communication, parallel/series setup, heating, enclosure, logo). [Confirmed per project] = fixed only in the datasheet issued with your quotation. Arithmetic: energy = nominal voltage × Ah.

Group	Parameter	Value	Status
Module	Module format	3U rack module, 51.2V (16S) · 100Ah	[Industry reference]
Module	Module energy	51.2V × 100Ah = 5.12kWh	[Industry reference] — arithmetic
Cluster	Example cluster sizes	5 = 256V/25.6kWh · 8 = 409.6V/40.96kWh · 10 = 512V/51.2kWh · 12 = 614.4V/61.44kWh	[Industry reference] — arithmetic
Cluster	Module count / voltage window	Matched to inverter or PCS battery-voltage window	[Confirmed per project]
Cluster	Rated current	Common market class ~50A rated / ~100A max	[Industry reference] · [Confirmed per project]
Control	Master control box	HV BMS, pre-charge, contactors, breaker, insulation monitoring	[Confirmed per project]
Control	Communication	CAN / RS485 / Ethernet (Modbus-type) to PCS/EMS — protocol per project	[Optional configuration]
Scaling	Parallel clusters	Configured per project; no fixed maximum published	[Optional configuration]
Thermal	Cooling / heating	Natural or forced-air cooling; self-heating on request	[Optional configuration]
Mechanical	Rack / cabinet	Open rack or enclosed cabinet; colour, logo, labels	[Optional configuration]
Mechanical	Dimensions / weight / IP	Per module and rack design	[Confirmed per project]
Cells	Cell brand / traceability documents	Stated per order; documents on request	[Confirmed per project]
Commercial	Certificates / MOQ / lead time / warranty	Per model, project and market	[Confirmed per project]

Optional configurations (OEM/ODM)

LJY Energy supplies this model as an OEM/ODM configurable build. The items below are configured per customer project — they are not fixed catalog defaults.

Cluster size: module count to match the PCS/inverter voltage window.
Communication: CAN/RS485/Ethernet protocol to your PCS/EMS — confirmed per project.
Parallel clusters: configured per project.
Rack or cabinet, cooling and self-heating options.
Branding: Appearance, color and logo customizable per customer request.

BMS, communication & protection

A cluster uses a two-level BMS: module slave boards plus a master control box that handles pre-charge, contactor logic, insulation monitoring and PCS communication.

BMS sizing guide

Load / use case	Suggested BMS rating
Single cluster with HV hybrid inverter	Module count set to inverter window
Several clusters on one PCS	Parallel-cluster controller, configured per project
UPS / data-room backup	Discharge rate and runtime confirmed per project

Send the PCS/inverter model, firmware and battery-voltage window. Compatibility is never assumed from brand names.

Size, handling & fitment

Plan rack floor load, front/rear service clearance and cable routing per the installation manual of your build.

HV DC systems require qualified installers and local electrical approvals.

Applications

C&I self-consumption and peak shaving (indoor)
UPS / data-room and telecom hub backup
Microgrids and farm storage
Integrator standard cluster SKUs

Application limits

Indoor rack installation unless an outdoor cabinet is specified.
Not for 48V low-voltage inverters.
All system values confirmed per project.

OEM / ODM & wholesale

LJY Energy is a China-based LiFePO4 battery supplier and OEM/ODM solutions provider offering customization, project-confirmed specifications and export supply coordination. Appearance, color and logo customizable per customer request. Certificate and documentation scope (e.g. UN38.3 / MSDS for shipping) is confirmed per model, order and target market — request the current document package. See the product catalog and wholesale & distributor program.

What to include in your inquiry

Application and site
Target cluster voltage / kWh and number of clusters
PCS or inverter model and firmware
Climate (min/max ambient, indoor/outdoor)
Annual volume
Logo / appearance / packaging needs
Target market (documentation scope)

Request a Quote

WhatsApp: +1 404 784 1946 (backup: +86 159 8945 0735)

Frequently Asked Questions

How is this different from a 48V rack battery?

48V rack modules are connected in parallel at 51.2V. In an HV cluster the same 3U module class is connected in series under a master control box for HV inverters/PCS.

Is it compatible with my PCS?

We do not publish a compatibility list; protocol and settings are confirmed against your exact model and firmware.

How is MOQ set?

MOQ is confirmed per project stage (sample, pilot, production) and depends on cells, enclosure tooling and branding scope.

Which certificates apply?

Certificate scope is confirmed per model, order and target market. We do not claim certifications on this page.

Values marked [To confirm] or [Competitor public] are not LJY-verified defaults. Product images are product renders for illustration. Content as of October 2026.