Share This Article
The 51.2V 280Ah LiFePO4 battery — 14.34kWh from a 16S1P pack — is the classic, battle-tested configuration that defined the home storage rack market. Built on the EVE LF280K cell, it remains in active production and wholesale supply worldwide. This page covers the specification, when to choose it over the newer 314Ah generation, and wholesale/OEM sourcing.
Specification at a Glance
| Parameter | Value |
|---|---|
| Nominal voltage | 51.2V (16S × 3.2V) |
| Rated capacity | 280Ah |
| Nominal energy | 14.34kWh (51.2V × 280Ah) |
| Cell configuration | 16S1P |
| Charge voltage | 58.4V typical |
| Enclosure options | Wall-mount, floor-standing, 19″ rack |
| Communication | CAN, RS485, Bluetooth (optional) |
Market naming: sold as “51.2V 280Ah”, “14kWh rack battery”, or “14.3kWh LiFePO4 battery”. All describe the same 16S1P configuration on 280Ah-class cells.
280Ah vs 314Ah: Which to Choose?
| 280Ah (this page) | 314Ah (new generation) | |
|---|---|---|
| Nominal energy | 14.34kWh | 16.08kWh |
| Cell platform | EVE LF280K and equivalents — longest track record | EVE MB31 / CATL / REPT / CALB / Hithium / Gotion |
| Supply maturity | Most mature cell supply chain in the industry | Current ESS standard, growing supply |
| Best for | Cost-sensitive projects, proven-cell requirements, DIY | Maximum energy per pack, new installations |
The 280Ah generation is not obsolete — it is the most field-proven 16S configuration in existence. Choose 280Ah when proven supply and cost matter most; choose 51.2V 314Ah (16.1kWh) when maximum energy density per pack is the priority.
Cell Options
The EVE LF280K is one of the most produced LiFePO4 cells in history, with equivalents from CATL, REPT, CALB, and Hithium. LJY Energy verifies cell model, grade, and batch documentation per project; UN38.3 test summaries and MSDS are supplied. Specifications, pricing, MOQ, and lead times are confirmed per project. For cell-level sourcing, see LiFePO4 battery cells wholesale.
Applications
- Residential solar storage: 14.3kWh covers typical household overnight loads with 5–8kW hybrid inverters.
- Server rooms and UPS: 19″ rack form factor for equipment backup.
- DIY and installer builds: the best-documented 16S configuration in the DIY community.
- Light commercial backup: paralleled racks for workshops and small businesses.
BMS and Customization Options
- Communication BMS: CAN/RS485 matched to Deye, Growatt, GoodWe, Victron-compatible, and Sunsynk-class inverters — see our BMS selection guide.
- Bluetooth BMS: mobile monitoring options.
- Parallel expansion: up to 16 units in parallel per manufacturer limits.
- OEM branding: private-label enclosures and specification sheets.
Wholesale and OEM/ODM
51.2V 280Ah remains an active wholesale SKU. LJY Energy supplies this classic configuration wholesale and supports OEM/ODM programs. For new maximum-density projects, also consider the 51.2V 314Ah (16.1kWh) model. Contact us with your target inverter, enclosure format, and volume for a project quotation.
Why Installers Still Spec 280Ah
- Deepest cell supply: the LF280K is among the highest-volume LiFePO4 cells ever produced.
- Installer familiarity: thousands of technicians have commissioned 280Ah-based 16S systems.
- Cost per kWh: typically the lowest cost-per-kWh of any 51.2V configuration.
Decision Framework: 280Ah or 314Ah?
- Choose 280Ah when: budget is the deciding factor; your installer team is already tooled on LF280K-based systems; you need maximum supply certainty.
- Choose 314Ah when: maximizing energy per rack footprint matters; the project is a premium residential installation.
- Either way: both are 51.2V 16S with identical charge profiles (58.4V), so inverters and wiring are interchangeable.
Beware of “too cheap” 280Ah offers. The LF280K’s popularity has attracted relabeled B-grade cells sold as Grade A. Genuine Grade A cells carry manufacturer QR codes with traceable batch data — always verify before committing to volume.
Shipping, Documentation & Project Terms
Lithium batteries ship as Class 9 dangerous goods with UN38.3 test summaries and MSDS. Specifications, pricing, MOQ, and lead times are confirmed per project.
Frequently Asked Questions
Is 280Ah being replaced by 314Ah?
Partially — 314Ah is the newer generation with ~12% more energy per pack. But 280Ah remains in active production with the deepest cell supply and longest track record.
How much energy does 51.2V 280Ah hold?
51.2V × 280Ah = 14,336Wh (14.34kWh).
Which inverters are compatible?
With a CAN/RS485 BMS: Deye, Growatt, GoodWe, Victron-compatible, Sunsynk-class, and similar 48V/51.2V hybrid inverters. Confirm the protocol per project.
Can I mix 280Ah and 314Ah packs in parallel?
Not recommended. Parallel packs should match in voltage profile and capacity. Choose one generation per system.
Share This Article