Name: Semi-Solid State LFP Battery — 280Ah Prismatic Cell
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Key Features

Semi-Solid State LFP — Next-Generation Safe Energy Storage

A 280Ah LFP prismatic cell built on in-situ solidification technology, delivering 896Wh per cell, 6000+ cycle life at ≥80% capacity, zero thermal runaway propagation at module level, and a wide operating range of −30°C to +60°C — available in ESS cabinet, container, and heavy-duty truck pack configurations.

Zero Thermal Propagation

No Thermal Runaway Propagation — Verified at Module Level

The semi-solid electrolyte (5–10% liquid content) fundamentally changes the thermal runaway behaviour of the cell. In module-level testing, a triggered cell reached 311°C and opened its safety valve, but adjacent cells remained below 82°C with no smoke, no fire, and only slight expansion — thermal runaway did not propagate. By contrast, a conventional liquid-electrolyte 280Ah cell in the same 1P52S module configuration caught fire and triggered full module thermal propagation under a 280A overcharge test. This is the defining safety advantage of semi-solid technology for stationary and mobile energy storage applications.

6000+ Cycles ≥80%

6000+ Cycle Life at ≥80% Capacity Retention

The 280Ah semi-solid cell achieves a rated cycle life of 6000 cycles at ≥80% capacity retention under standard 0.5C charge / 0.5C discharge conditions at 25°C with 300±20kgf initial pressure. This translates to over 16 years of daily cycling at one cycle per day — significantly extending the economic life of the energy storage system compared to conventional LFP cells. The in-situ solidification technology stabilises the electrode-electrolyte interface, suppressing lithium dendrite growth and reducing capacity fade over the cell lifetime.

−30°C to +60°C

Wide Operating Range — Discharge from −30°C, Charge to +60°C

The semi-solid cell supports discharge from −30°C to +60°C and charging from 0°C to +60°C, with a lower discharge voltage cutoff of 2.0V at temperatures ≤0°C (versus 2.5V at >0°C) to maintain usable capacity in cold climates. Short-term storage is rated to −40°C, making the cell suitable for outdoor ESS installations in extreme cold environments. The oxide-polymer composite electrolyte maintains ionic conductivity across this wide temperature range — a key advantage over conventional liquid electrolytes that freeze or decompose at temperature extremes.

All Safety Tests Pass

Passes All Abuse Safety Tests — Nail, Crush, Overcharge, Overheat

The 280Ah semi-solid cell passes the full suite of cell-level abuse safety tests: overcharge to 25V, over-discharge to 0V, external short circuit at ambient and 150°C, 30% thickness extrusion, 5mm nail penetration, 1.2m drop, overheat to 160°C at 5°C/min, thermal shock from −40°C to +75°C (10 cycles), and direct heating thermal runaway test — all with no smoke, no fire, and no explosion. This comprehensive safety performance is enabled by the semi-solid electrolyte's inherently lower flammability and the in-situ solidification coating that passivates both cathode and anode surfaces.

Technical Specifications

Cell Parameters — 280Ah Semi-Solid LFP Prismatic

LFP chemistry · In-situ solidification technology · 3.2V nominal · 896Wh per cell

Parameter	Value
Electrical
Nominal Capacity	280 Ah
Nominal Energy	896 Wh
Nominal Voltage	3.2 V
Charging Upper Limit	3.65 V
Discharge Lower Limit	2.5 V (T > 0°C) / 2.0 V (T ≤ 0°C)
Standard Charging Power	0.5P — 448 W
Standard Discharge Power	0.5P — 448 W
Max. Discharge Power (1C)	1P — 896 W
Cycle Life	≥ 6000 cycles @ ≥80% (0.5C/0.5C, 25°C, 300±20 kgf)
Energy Density
Gravimetric Energy Density	≥ 165 Wh/kg
Volumetric Energy Density	≥ 340 Wh/L
Internal Resistance
AC IR (1 kHz, 25°C, 40% SOC)	≤ 0.24 mΩ
DC IR (400A, 10s, 25°C, 25% SOC)	0.5 ± 0.05 mΩ
Dimensions
Width (mm)	173.8 ± 1.0
Thickness (mm)	71.6 ± 1.0 (at 300 ± 20 kgf)
Height — Shoulder / Total (mm)	204.0 ± 0.5 / 207.2 ± 0.5
Pole Centre Distance (mm)	123.0 ± 0.2
Temperature & Storage
Charge Temperature Range	0°C to +60°C
Discharge Temperature Range	−30°C to +60°C
Short-Term Storage (1 month)	−40°C to +60°C
Long-Term Storage (6 months)	−10°C to +35°C
Storage Humidity	≤ 95% RH, no condensation
Standard charge model: 0.5P CP to 3.65V → idle 30 min → 0.5P DP to 2.5V at 25±2°C

Cell Safety Performance — All Tests Pass

No smoke · No fire · No explosion across all electrical, mechanical, and thermal abuse tests

Test	Condition	Pass Criterion	Result
Electrical Safety
Overcharge	25°C, 0.5C charge to 25V or 1h	No smoke, no fire, no explosion	Pass
Over-discharge	25°C, 1C discharge to 0V or 1h	No leak, no smoke, no fire, no explosion	Pass
Short Circuit	25°C, <5mΩ wire SC to 0V or 1h	No smoke, no fire, no explosion	Pass
Short Circuit at High Temp.	Store at 150°C, <5mΩ wire SC to 0V or 1h	No smoke, no fire, no explosion	Pass
Mechanical Safety
Extrusion	Deform 30% on thickness direction	No leak, no smoke, no fire, no explosion	Pass
Nail Penetration	5mm steel nail penetrate through	No leak, no smoke, no fire, no explosion	Pass
Drop	Drop from 1.2m, +/− terminals facing cement	No leak, no smoke, no fire, no explosion	Pass
Thermal Safety
Overheat	Raise to 160°C at 5°C/min, hold 1h	No smoke, no fire, no explosion	Pass
Thermal Shock	10 cycles: −40°C ↔ +75°C	No leak, no smoke, no fire, no explosion	Pass
Thermal Runaway	Heating pad at max. capacity direct contact	Target cell: no fire, no explosion, no propagation	Pass
Module-level thermal runaway test (1P12S): triggered cell reached 311°C — adjacent cells remained below 82°C with no propagation

Module & Pack

Module, Standard Pack & ESS System Parameters

From cell to system — 1P12S / 1P13S modules, 43–46.6kWh standard packs, 215kWh ESS cabinets, and 3.35–5MWh container systems

Parameter	1P12S Module	1P13S Module
Cell	280Ah LFP Prismatic
Cell Quantity	12	13
Nominal Voltage (V)	38.4	41.6
Capacity (Ah)	280
Nominal Energy (kWh)	10.75	11.65
Dimensions W×D×H (mm)	910 × 175 × 215	982 × 175 × 215
Energy Density (Wh/kg)	153.2	153.6
Gravimetric Efficiency	94.1%	94.5%
Welding Method	Laser welding
Working Temperature	−30°C to +60°C
Module Weight (kg)	70.2	75.7
No thermal propagation in 1P12S module TR test — adjacent cells below 82°C after trigger cell reached 311°C

Parameter	1P48S Pack	1P52S Pack
Cell Type	LFP Prismatic 280Ah
Nominal Voltage (V)	153.6	166.4
Working Voltage Range (V)	120–175.2	130–189.8
Energy (kWh)	43	46.59
Energy Density (Wh/kg)	140.5	141.3
Dimensions W×D×H (mm)	1069 × 787 × 235	1164 × 800 × 235
Weight Est. (kg)	309	329.5
Cooling	Integrated liquid cooling
Charge Temperature	0°C to +60°C
Discharge Temperature	−30°C to +60°C
Storage Temperature	−10°C to +35°C

ESS Cabinet & Container System Parameters

Parameter	ESS Cabinet 215kWh	ESS Cabinet 232.9kWh	Container 3.35MWh	Container 5MWh
Cell Type	280Ah / 3.2V		280Ah / 3.2V	314Ah / 3.2V
Pack Configuration	1P48S	1P52S	1P52S	1P52S
System Configuration	—		9 × 1P416S	12 × 1P416S
Energy	215 kWh	232.9 kWh	3.35 MWh	5 MWh
Nominal Voltage (V)	—		1331.2
Voltage Range (V)	—		1123.2–1497.6
AC Side Voltage	380 Vac		—
Nominal Power	0.5P		0.5P	0.25P
Dimensions W×D×H (mm)	1300 × 1200 × 2300	1300 × 1300 × 2300	20ft container
Weight (T)	2.35	2.6	—
Protection Class	IP55		IP54
Operating Temperature	−30°C to +55°C
Cooling	Liquid cooling
Fire Protection	Perfluoro + aerogel + water		—
Communication	Ethernet / Modbus TCP		—
Semi-solid chemistry · Safer and more reliable · Energy expandable · Easy to configure

Zero Thermal Propagation

Module-level test verified: triggered cell at 311°C — adjacent cells below 82°C, no fire, no propagation. Liquid electrolyte equivalent caught fire at module level.

6000+ Cycle Life

≥80% capacity retention after 6000 cycles at 0.5C/0.5C, 25°C — over 16 years of daily cycling. In-situ solidification stabilises the electrode-electrolyte interface.

−30°C to +60°C Operation

Discharge from −30°C, charge to +60°C, short-term storage to −40°C. Oxide-polymer composite electrolyte maintains conductivity across extreme temperature ranges.

All Abuse Tests Pass

Nail penetration, 30% extrusion, overcharge to 25V, 160°C overheat, thermal shock −40↔+75°C — all pass with no smoke, no fire, no explosion.

896Wh · 165Wh/kg · 340Wh/L

280Ah at 3.2V delivers 896Wh per cell with ≥165Wh/kg gravimetric and ≥340Wh/L volumetric energy density — higher than standard LFP prismatic cells.

Cell → Cabinet → Container

Scalable from 10.75kWh modules to 215kWh ESS cabinets and 3.35–5MWh 20ft container systems — all with liquid cooling and IP54/55 protection.

Why Choose Semi-Solid State via Aurea Energy?

Zero Thermal Propagation — Verified at Module Level — In 1P12S module testing, a triggered cell reached 311°C while adjacent cells remained below 82°C with no fire and no propagation — the defining safety advantage of semi-solid technology.
6000+ Cycle Life at ≥80% Retention — Over 16 years of daily cycling under standard 0.5C/0.5C conditions. In-situ solidification stabilises the electrode-electrolyte interface, suppressing dendrite growth and capacity fade.
−30°C to +60°C Operating Range — Discharge from −30°C, charge to +60°C, short-term storage to −40°C. The oxide-polymer composite electrolyte maintains ionic conductivity across extreme temperature ranges.
All Abuse Tests Pass — Nail, Crush, Overcharge, Overheat — Passes the full suite of electrical, mechanical, and thermal abuse tests with no smoke, no fire, and no explosion — enabled by the semi-solid electrolyte's inherently lower flammability.
Complete System Portfolio — Cell to Container — From 280Ah cells to 10.75kWh modules, 43–46.6kWh standard packs, 215kWh ESS cabinets, and 3.35–5MWh 20ft container systems — all with integrated liquid cooling.
Aurea Engineering Support — Our team provides system design, thermal management review, BMS integration, and commissioning support for every semi-solid battery project deployment.