51.2V 314Ah LiFePO4 Battery (16.1kWh) — Wholesale & OEM/ODM

The 51.2V 314Ah LiFePO4 battery — 16.1kWh from a 16S1P pack — is the current flagship configuration for residential energy storage. It succeeds the older 280Ah cell generation with more usable energy at cell level; pack structure, dimensions, and enclosure format are confirmed per order rather than assumed interchangeable. This page covers the specification, cell options, enclosure formats, BMS choices, and how to source this model wholesale or as OEM/ODM from China.

Specification at a Glance

Parameter	Value
Nominal voltage	51.2V (16S × 3.2V)
Rated capacity	314Ah
Nominal energy	16.08kWh (51.2V × 314Ah)
Cell configuration	16S1P
Charge voltage	58.4V typical
Discharge cut-off	~40V (per BMS setting)
Enclosure options	Wall-mount, floor-standing, 19″ rack
Communication	CAN, RS485, Bluetooth (optional)

Market naming: this model is sold under several names — “51.2V 314Ah”, “16kWh LiFePO4 battery”, “16kWh wall-mounted home battery”. All describe the same 16S1P configuration. LJY Energy uses both the voltage/Ah designation and the kWh figure to match how buyers search.

Cell Options: the 314Ah Generation

The 314Ah prismatic cell is the 2025–2026 ESS standard.Several established makers publish 314Ah-class prismatic cells; the cell brand and lot used for a given order are confirmed in the quotation (not a standing CATL or multi-brand stock claim on this page). Compared with the legacy EVE LF280K (280Ah), the 314Ah generation delivers roughly 12% more energy per 16S pack — 16.08kWh vs 14.34kWh — with improved cycle performance claimed by manufacturers.

As a China-based battery supply chain partner, LJY Energy coordinates cell sourcing by specification sheet, not by brand slogan. We verify cell model, grade, and batch documentation per project, and supply UN38.3 test summaries and MSDS for the shipped goods. Specifications, pricing, MOQ, and lead times are confirmed per project.

Applications

• Residential solar storage: the primary application — sized for 5–10kW low-voltage hybrid inverters for daily cycling; protocol and pairing confirmed per inverter model.
• Solar off-grid systems: 16kWh covers overnight loads for typical homes; expandable in parallel (maximum count per BMS / inverter pairing, confirmed per project).
• Light commercial backup: stacked wall-mount or rack units for small businesses and workshops.
• UPS replacement: for sites replacing lead-acid UPS banks with longer-life lithium.

For the previous-generation 280Ah configuration, see our 51.2V 280Ah battery page — it compares 14.3kWh legacy packs against this 16.1kWh model and explains when each makes sense. For cell-level sourcing, see LiFePO4 battery cells wholesale.

BMS and Customization Options

• Communication BMS: CAN/RS485 with selectable protocols, set for your inverter model and firmware and confirmed per project — see our BMS selection guide for inverter compatibility logic.
• Bluetooth BMS: for mobile monitoring of voltage, current, SOC, and cell temperatures.
• Low-temperature protection: charging cut-off below 0°C; self-heating pads optional for cold climates.
• High-current BMS: 100A–200A continuous options depending on inverter and load requirements.
• Enclosure: wall-mount steel cabinet, floor-standing cabinet, or 19″ rack (3U/4U-class); OEM private-label branding available.
• Parallel expansion: multiple units in parallel (2 units = 32.16kWh; 10 units = 160.8kWh), subject to BMS and inverter limits.

Wholesale and OEM/ODM

This 16kWh configuration is available for wholesale distribution and OEM/ODM projects: private-label enclosures, custom specification sheets, inverter protocol configuration confirmed per project, and project-level documentation (UN38.3, MSDS). Contact us with your target inverter brand, enclosure format, and volume for a project quotation. Buyers in Southern Africa can also review our South Africa sourcing guide for market-specific notes on inverters and import rules.

How to Size a 16kWh System

A 16.08kWh battery stores enough energy for most households’ overnight consumption. Typical sizing logic:

• Daily cycling: with 90% depth of discharge, ~14.5kWh is usable per cycle — enough for evening loads (lighting, refrigeration, TV, routers) plus morning startup before solar ramps up.
• Inverter pairing: match a 5–8kW hybrid inverter to a single unit; 8–12kW inverters pair better with two units in parallel (32kWh).
• Parallel expansion: many communication BMS designs allow parallel banks (e.g. 16 units ≈ 257kWh), but verify the BMS manufacturer’s limit and the inverter’s battery-input capacity before planning large systems.
• Solar array: 16kWh of storage pairs well with 4–8kW of PV in most climates — sized so the battery reaches full charge on a typical sunny day without excessive curtailment.

Oversizing storage beyond 2× daily consumption rarely pays back; undersizing forces deep cycling that shortens calendar life. Size for 1–1.5 days of autonomy for grid-backup use, more for off-grid.

Cell Matching & Quality Control

A 16S pack is only as good as its weakest cell. Professional pack assembly includes:

• Voltage and internal-resistance sorting: all 16 cells matched within tight tolerances so the pack charges and discharges evenly — the single biggest factor in real-world cycle life.
• Grade verification: “Grade A” should mean manufacturer-original, QR-coded, automotive/ESS-grade cells with traceable batch documentation — not relabeled or repurposed cells. LJY Energy verifies cell model, grade, and batch documentation per project rather than relying on supplier claims.
• Capacity testing: spot capacity verification on incoming cell batches before pack assembly.
• BMS calibration: voltage thresholds, temperature cut-offs, and communication protocols configured and tested before shipment — not left at factory defaults.
• Documentation package: specification sheet for the exact cells shipped, UN38.3 test summary, and MSDS with every order.

Ask any supplier for these five items before committing to volume. A supplier who cannot produce batch documentation for their cells is a supplier to avoid.

Shipping, Documentation & Project Terms

Lithium batteries ship as Class 9 dangerous goods. Every shipment includes a UN38.3 test summary and MSDS; cells travel at reduced state of charge per carrier rules. Sea freight from China to major markets (Durban, Lagos, Jebel Ali, Sydney) runs 2–6 weeks depending on route; air freight is available for samples. Specifications, pricing, MOQ, and lead times are confirmed per project — we do not publish inventory claims or promise certifications not yet obtained.

Frequently Asked Questions

Is 51.2V 314Ah the same as a “16kWh battery”?

Yes. 51.2V × 314Ah = 16,076.8Wh, marketed as a 16kWh-class home battery. Both names describe the same 16S1P configuration.

How does the 314Ah version differ from 280Ah packs?

314Ah packs store about 12% more energy (16.1kWh vs 14.3kWh) at the same 51.2V. The 314Ah cell generation is the current ESS capacity class from multiple established cell makers (brand confirmed per quotation). Our 280Ah page covers when the legacy model is still worth considering.

Which inverters work with this battery?

The BMS supports CAN and RS485 and can be set to common protocols used by hybrid inverters such as Deye, Growatt and Victron systems. Send your inverter model and firmware version; we confirm the protocol setting, cable pinout and charge settings before shipment. Some inverter brands (e.g. SMA, Sofar, GoodWe) only warranty batteries on their own approved lists, and LJY Energy is not on any inverter maker’s approved list unless confirmed in writing.

Can I expand to more than one unit?

Yes, compatible packs can be paralleled for larger systems (maximum unit count confirmed per project), subject to the BMS manufacturer’s parallel limits and inverter capacity.