BMS 7S-21S LiFePO4 200A 3.2V Smart Bluetooth

Smart BMS with balancer, 200A 7~21S LiFePO4 Jiabaida

BMS with integrated Bluetooth for precise real-time battery monitoring. JBD BMS provides battery cell protection, capacity calculation and balancing. In addition to Bluetooth, it also communicates via UART, RS485. Before first use, the negative battery terminal must first be connected to the BMS. Then the balance connector, which is already connected to the individual battery cells, needs to be connected. Failure to follow this sequence may result in permanent damage to the BMS.

The intelligent BMS (battery management system) acts as a protection circuit specifically designed for strings of 7 to 21 LiFePO4 battery cells. The BMS includes a balancer that effectively adjusts the voltage of each cell. The BMS hardware is embedded between two aluminum alloy plates that provide good heat dissipation in addition to physical protection.

Advantages of JBD Smart BMS 7~21S 3.2V 200A LiFePO4

• selectable number of LiFePO4 battery strings
• extra fine B- and C-cables high voltage resistant
• Bluetooth communication with mobile app
• overcharge and over-discharge protection
• over-current protection charging/discharging
• temperature protection
• balancing function
• capacity calculation (SOC)
• sleep mode

Technical specifications:

• Operating voltage range: 17.5V ~ 73.0V
• Continuous charging current: 200A
• Continuous discharge current: 200A
• Maximum charging voltage of the battery pack: 73.0V
• Threshold voltage for triggering overcharge protection: 3.65V
• Delay for triggering overcharge protection: 2000ms
• Threshold voltage for turning off overcharge protection: 3.45V
• Threshold voltage for triggering undervoltage protection: 2.2V
• Delay for triggering undervoltage protection: 2000ms
• Threshold voltage for turning off undervoltage protection: 3.0V
• Threshold current for triggering charging current protection: 300A
• Delay for triggering charging current protection: 10s
• Condition for turning off charging current protection: 32s
• Threshold current for triggering discharge current protection (I): 300A
• Delay for triggering discharge current protection (I): 10s
• Threshold current for triggering discharge current protection (II): 1000A
• Delay for triggering discharge current protection (II): 600ms ~ 1800ms
• Condition for turning off discharge current protection (I + II): recovery after 32s
• Delay of short circuit protection activation: 5000μs
• Condition for turning off short circuit protection: load turn off and recovery after 60s
• Threshold voltage for balancing activation: 3.32V ~ 3.38V
• Threshold voltage difference for balancing activation: 10mV
• Balancing mode: charging / discharging / continuous balancing
• Balancing current: 100mA / 180mA / 260mA
• Maximum temperature for charging thermal protection activation: 65°
• Threshold maximum temperature for turning off charging thermal protection: 55°
• Minimum temperature for charging thermal protection activation: -5°
• Threshold minimum temperature for turning off charging thermal protection: 0°
• Maximum temperature for discharging thermal protection activation: 75°
• Threshold maximum temperature for turning off discharging thermal protection: 65°
• Minimum temperature for discharging thermal protection activation: -20°
• Threshold minimum temperature for turning off discharging thermal protection: -10°
• Internal resistance of discharging circuit: 5 mΩ
• Current consumption in normal operating mode (with load): 35 mA
• Current consumption in idle mode (without load): 500 μA
• Delay and conditions for switching to idle mode: after 65s without load, communication or protection mode
• Normal range of working temperatures: -20°C ~ 70°C
• Range of storage temperatures with relative humidity <90%: -40°C ~ 85°C
• Communication: UART, RS485, Bluetooth

The package contains: BMS, connection cables

WARNING: Cannot be connected in parallel.