High-Voltage Stackable LiFePO4 Battery (51.2V 100Ah Modules, 204.8V+ Stacks)
Product Overview
A high-voltage (HV) stackable LiFePO4 battery system made of 51.2V 100Ah (5.12kWh) modules connected in series under a high-voltage BMS / control box. Typical stacks start at 4 modules (204.8V, 20.48kWh) and grow module by module. It is designed for HV hybrid inverters that are now common in EU, AU and other residential and light-commercial markets.
Distributors and installers re-order the same module SKU project after project, so the module, the control box and the communication setup are the repeat-purchase items. This page is different from our low-voltage stackable 51.2V home storage, where modules are connected in parallel at 51.2V.
Appearance, color and logo customizable per customer request.
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 voltage / capacity | 51.2V (16S) · 100Ah | [Industry reference] |
| Verification | Capacity confirmation method | Stated Ah and Wh are confirmed per project by the method agreed in the quotation (examples used in this industry: constant-current discharge to the BMS cut-off, BMS-reported capacity after a controlled cycle, or a factory capacity/test summary supplied with the shipment). This page does not publish a measured capacity figure. | [Confirmed per project] |
| Module | Module energy | 51.2V × 100Ah = 5.12kWh | [Industry reference] — arithmetic |
| Stack | Example stack sizes | 4 modules = 204.8V / 20.48kWh · 6 = 307.2V / 30.72kWh · 8 = 409.6V / 40.96kWh | [Industry reference] — arithmetic |
| Stack | Module count range / max series | Set by HV BMS and inverter voltage window | [Confirmed per project] |
| Stack | Operating voltage window | Per module count (16S LiFePO4 per module) | [Confirmed per project] |
| Stack | Rated current | Common market class ~50–100A | [Industry reference] · [Confirmed per project] |
| BMS | HV BMS / control box | Battery control unit with protections, pre-charge and breaker | [Confirmed per project] |
| BMS | Communication | CAN / RS485 to inverter; protocol per project | [Optional configuration] |
| BMS | Parallel stacks | Multiple stacks in parallel — configured per project; no fixed maximum published | [Optional configuration] |
| Thermal | Self-heating | Available on request | [Optional configuration] |
| Thermal | Charge temperature behaviour | Charging typically blocked near 0°C | [Industry reference] |
| Mechanical | Enclosure / colour / logo | Stackable tower housing; colour, logo, labels, packaging | [Optional configuration] |
| Mechanical | Dimensions / weight / IP rating | Per module 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 and order | [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.
- BMS communication: CAN/RS485 protocol set to your HV inverter — confirmed per project.
- Series configuration: module count to match the inverter battery-voltage window.
- Parallel stacks: configured per project; no fixed maximum is published.
- Self-heating: available on request, to be confirmed per project.
- Enclosure & branding: housing colour, logo, labels, packaging — Appearance, color and logo customizable per customer request.
BMS, communication & protection
In an HV stack, the BMS/control box handles pre-charge, isolation and contactor control as well as cell protection. It must match the inverter voltage window and protocol.
BMS sizing guide
| Load / use case | Suggested BMS rating |
|---|---|
| HV hybrid inverter, home | Module count set to inverter battery-voltage window |
| Light commercial | Parallel stacks per project design |
| Cold sites | Add self-heating option (to be confirmed) |
Never assume brand-level compatibility. Send the inverter model and firmware; protocol and settings are confirmed per project.
Size, handling & fitment
Stacked modules sit on a base and are connected in series; plan floor load, wall anchoring and front clearance per the installation manual for your build.
HV DC requires qualified installation; follow local electrical rules.
Spec, compliance & configuration fields
Use this table to prepare an RFQ for the HV stackable system. Per-module values; HV stack voltage depends on the module count.
| Group | Parameter | Value | Status |
|---|---|---|---|
| Energy | Nominal energy | 51.2V × 100Ah = 5,120.0Wh (5.12kWh) | [Industry reference] — arithmetic |
| Energy | Usable energy at an example DoD | Per 51.2V 100Ah module: 90% DoD ≈ 4.61kWh; 80% DoD ≈ 4.10kWh. Example only; real limit set by BMS/HV inverter settings | [Industry reference] · [Confirmed per project] |
| Enclosure | IP rating options | IP20 / IP21 (indoor) or IP65-class (outdoor enclosure) offered as options by project; rating and test basis confirmed per order. Some import markets use enclosure IP class in customs or tender classification — check with your broker | [Optional configuration] · [Confirmed per project] |
| Thermal | Operating temperature and heat derating | Charge / discharge temperature windows and the derating curve are set in the BMS and confirmed per project (see the climate guidance on this page where present) | [Confirmed per project] |
| Life | Cycle life — test-condition fields | Quote cycle life only with: DoD, charge / discharge C-rate, ambient temperature, end-of-life capacity %, cell type. Values are confirmed per project; no figure is claimed here | [Confirmed per project] |
| Commercial | Warranty structure | Structure to confirm per order: years vs cycles vs energy throughput, conditions (DoD, temperature, installation), who handles service | [Confirmed per project] |
| Documents | Certificate / test-report documents | Provided per order if available — confirm at inquiry. This page does not state that LJY holds any certificate or report | [Confirmed per project] |
| Documents | Importer-held certificates (OEM note) | Where an importer or brand owner holds or obtains certificates in its own name, scope, labeling and supporting documents are agreed in the OEM/ODM project | [Optional configuration] · [Confirmed per project] |
| Mechanical | Dimensions | Per module tower design; confirm stacking height, footprint and floor load before quoting | [Confirmed per project] |
| Communication | Ports | CAN and RS485 as typical BMS ports; dry-contact or other ports on request | [Optional configuration] |
| Communication | Protocol profiles | Optional profiles for inverter families such as Deye, Growatt, Luxpower, Victron-type, Pylontech-style: to be confirmed per project against the exact inverter model and firmware. This is not a compatibility claim and no compatibility list is published | [Optional configuration] · [Confirmed per project] |
| Supply options | Supply scope (pack, enclosure, components) | Complete finished stackable modules; enclosures and components (cells, BMS, modules, harness) for customers who assemble locally; and OEM/ODM pack programs, coordinated per project. The quotation separates existing standard configuration, customizable options and items still to be confirmed. Cell-level supply: see LiFePO4 prismatic cells wholesale | [Optional configuration] · [Confirmed per project] |
| Branding | Private label | Logo, colour, labels and packaging; Appearance, color and logo customizable per customer request | [Optional configuration] |
| Logistics | Weight and shipping data | Net / gross weight, carton or crate size and pallet data are confirmed per model before quoting | [Confirmed per project] |
Rows labelled [Industry reference] are arithmetic or market norms, not LJY measurements. [Optional configuration] items are available by project; [Confirmed per project] items are stated per order. Send your target market, inverter model and documents needed with your inquiry.
Applications
- Residential HV hybrid inverter systems
- Light commercial self-consumption and backup
- Installer and distributor standard SKUs
- Private-label HV home batteries
Application limits
- Not interchangeable with 48V low-voltage inverters.
- Mixing module generations in one stack is not recommended.
- Protocol and module count are project-specific.
See also: Home Energy Storage Solutions · Solar Energy Storage · LV stackable storage · Product catalog.
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 (home, C&I, off-grid, backup)
- Voltage / Ah / kWh target
- Number of modules / target stack voltage
- Inverter or PCS model and firmware
- Climate (min/max ambient, indoor/outdoor)
- Annual volume
- Logo / appearance / packaging needs
- Target market (documentation scope)
WhatsApp: +1 404 784 1946 (backup: +86 159 8945 0735)
Related products & guides
- Stackable LiFePO4 Home Energy Storage (LV)
- 51.2V 100Ah LiFePO4 Battery
- 51.2V Rack Battery Series
- 51.2V 314Ah Floor-Standing Cabinet
- HV Rack Battery Cluster (3U 51.2V modules)
- Product catalog
- Closed-loop inverter communication guide for 51.2V batteries
- Installer path and inquiry checklist: what to confirm before ordering. This page is a high-voltage (HV) stack. The 51.2V (48V class) formats on the installer page are low-voltage and cannot be connected to an HV inverter, so choose by inverter first.
RFQ fields — send these with your inquiry
- Inverter brand/model and firmware version
- Target stack voltage / number of 51.2V 100Ah modules
- CAN or RS485 protocol preference (confirmed per project)
- Indoor location / cabinet constraints
- Estimated annual volume
- Logo / appearance / packaging needs
- Target market (documentation scope)
Send your RFQ for LJY-HV51100-STACK · WhatsApp: +1 404 784 1946 (backup: +86 159 8945 0735)
Frequently Asked Questions
HV or LV — which should I choose?
Choose by inverter: HV hybrid inverters need an HV stack; 48V inverters need a 51.2V (48V class) battery.
How many modules can I stack?
The module count is set by the HV BMS and the inverter voltage window and confirmed per project.
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.
Is it compatible with my inverter?
We do not publish a compatibility list. Communication protocol and settings are confirmed against your exact inverter or PCS model and firmware per project.
Values marked [To confirm] or [Competitor public] are not LJY-verified defaults. Product images are product renders for illustration. Content as of October 2026.