Battery Pack Technical Specifications

Model		SFA1800	PFA2000
Battery Pack Parameters
Battery Specifications	Battery Type	Semi-solid Lithium Iron Phosphate (LiFePO₄)	Standard Lithium Iron Phosphate (LiFePO₄)
	Rated Voltage	Voltage Range: 5.0–7.3V; Nominal Voltage: 6.4V
	Nominal Capacity	280Ah	314Ah
	Nominal Energy	1796Wh	2009.6Wh
	Cycle Life (100% DoD)	≥8000 cycles at 25°C (70% capacity retention)
	Cell Weight	11kg	11.5kg
	Max Continuous Charge Current	140A	157A
	Max Continuous Discharge Current	270A
Battery Pack Interface ×2
Port Description	Input Configuration	4-pin: Two power pins, two signal pins
Input Electrical Parameters	Voltage Range	400V ±3V
	Rated Current	10A ±10%
	Rated Power	4000W ±5%
Accessories & Communication
Communication Method	Communication with Main Unit	CAN interface, baud rate 500 kbps
Structure
Ingress Protection	Protection Rating	IP65
Enclosure	Housing Type	Metal enclosure
Electric Heating Design	Heating Function	Automatic electric heating activated below 1°C
Mechanical Design
Weight	Net Weight	19.5kg ±1kg	20kg ±1kg
Dimensions	Installation Dimensions (mm)	425 × 195 × 260 mm
Environmental Requirements
Storage Temperature	Storage Conditions	1 month: -20 to 60°C; 6 months: 0 to 40°C
Operating Temperature	Operating Conditions	Charging: -20 to 55°C; Discharging: -20 to 55°C; When cell temperature is below 1°C, electric heating activates and stops at 5°C. Rated heating power: 55W. At -20°C ambient temperature, heating rate is 5°C per 50 minutes under rated power. High-temperature charge/discharge derating strategy is consistent with the main battery unit.
Operating Humidity	Humidity Range	5%–90% RH
Cooling Overview	Cooling Method	Natural cooling
Altitude	Operating Altitude	Default below 2000m; above 2000m derating applies (same strategy as high-temperature derating)
Operating Noise	Noise Level	Below 25dB (full load, semi-anechoic chamber, background noise ≤18dB, measured at 1.0m distance)
Terminal Requirements
Battery Expansion Terminals	Rated Parameters	Two power lines: Rated voltage 500V, rated current 10A. Two signal lines: Rated voltage 5V, rated current 10mA.
	Protection Rating	IP65
	Additional Requirements	Stackable design, compliant with IEC62109 probe test requirements.