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  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner
  • 8S 400A BMS for Car Starting &Parking Air conditioner

8S 400A BMS for Car Starting &Parking Air conditioner

  • Prevents charging beyond the voltage limit
  • Stops discharging below safe levels.
  • Protects against excessive current.
  • Prevents damage from short circuits.
  • Manages overheating and low temperatures.
  • Ensures uniform voltage across cells.
  • Enables real-time monitoring via RS485/CAN.
  • Optimizes energy flow and stability.
  • Prevents charging beyond the voltage limit
  • Stops discharging below safe levels.
  • Protects against excessive current.
  • Prevents damage from short circuits.
  • Manages overheating and low temperatures.
  • Ensures uniform voltage across cells.
  • Enables real-time monitoring via RS485/CAN.
  • Optimizes energy flow and stability.
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Parameter information Product Detail
LFLI
Model NumberAY-YY8S400A-H240 (8S)
Communication InterfaceRS485/CAN
Charging voltageDC：25.6V CC/CV
（3.2V/Cell) 8s		DC：33.6V CC/CV
（4.2V/Cell) 8s
Maximal continuous charging current400A
Maximal continuous discharging current400A
Current consume in normal operation≤15mA
Current consume in sleep operation≤150uA
Balance voltage for single cell3.6±0.05V4.2±0.05V
Over charge detection voltage3.65±0.05V4.25±0.05V
Charge Over current detection current420±3A
Discharge Over current detection current 1800±3A
Discharge Over current detection current 2900±3A
Short ProtectionYES
SOC5%~8%
Technical Specification
SizeL240 * W155 * T50 mm
NTC10K
Temperature switch/ ℃(the batteries temperature)
Weak current switchYES
Active balance/
Heater YES
Braking ResistorsYES
Other Parameter
Low temperature protection when charge0℃
Release temperature( low temperature protection)5℃
Over temperature protection when charge60℃
Release temperature( over temperature protection)55℃
Low temperature protection when discharge-15℃
Release temperature( low temperature protection)-10℃
Over temperature protection when discharge65℃
Release temperature( over temperature protection)55℃
Operating Temperature Range-40~+85℃
Storage Temperature Range-40~+125℃
Temperature Parameter
LCD display screen/
LED light board/
Bluetooth modeYES
4G/
GPSYES
Optional Configuration
LFLI
Model NumberAY-YY8S400A-H240 (8S)
Communication InterfaceRS485/CAN
Charging voltageDC：25.6V CC/CV
（3.2V/Cell) 8s		DC：33.6V CC/CV
（4.2V/Cell) 8s
Maximal continuous charging current400A
Maximal continuous discharging current400A
Current consume in normal operation≤15mA
Current consume in sleep operation≤150uA
Balance voltage for single cell3.6±0.05V4.2±0.05V
Over charge detection voltage3.65±0.05V4.25±0.05V
Charge Over current detection current420±3A
Discharge Over current detection current 1800±3A
Discharge Over current detection current 2900±3A
Short ProtectionYES
SOC5%~8%
Technical Specification
SizeL240 * W155 * T50 mm
NTC10K
Temperature switch/ ℃(the batteries temperature)
Weak current switchYES
Active balance/
Heater YES
Braking ResistorsYES
Other Parameter
Low temperature protection when charge0℃
Release temperature( low temperature protection)5℃
Over temperature protection when charge60℃
Release temperature( over temperature protection)55℃
Low temperature protection when discharge-15℃
Release temperature( low temperature protection)-10℃
Over temperature protection when discharge65℃
Release temperature( over temperature protection)55℃
Operating Temperature Range-40~+85℃
Storage Temperature Range-40~+125℃
Temperature Parameter
LCD display screen/
LED light board/
Bluetooth modeYES
4G/
GPSYES
Optional Configuration
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