BMS 4S LiFePO4 120A 3.2V Smart Bluetooth

Technical specifications

Operating voltage range: 10.0 V ~ 14.6 V

Constant charging current: 120 A

Constant discharge current: 100 A

Maximum charging voltage of the battery pack: 14.6 V

Limit voltage for closing the overload protection: 3.65 V

Overcharge protection switching delay: 2000 ms

Limit voltage for switching off the overload protection: 3.5 V

Limit voltage for closing the undervoltage protection: 2.5 V

Underrun protection switching delay: 2000 ms

Limit voltage for switching off the underrun protection: 3.0 V

Limit current for closing the current protection during charging: 130 A

Current protection switching delay during charging: 2 s

Condition for switching off the current protection during charging: 32 s

Limit current for closing the current protection during discharging (I): 130 A

Current protection switching delay during discharging (I): 2 s

Limit current for closing the current protection during discharging (II): 400 A

Current protection switching delay during discharge (II): 100 ms ~ 500 ms

Condition for switching off the current protection during discharging (I + II): recovery after 32 s

Short-circuit protection switching delay: 200 μs ~ 500 μs

Condition for switching off the short-circuit protection: switching off the load and recovery

Balancing limit for balancing switching: 3.35 V ~ 3.45 V

Voltage limit limit for balancing switching: 30 mV

Balance mode: balancing during charging

Balance current: 40 mA ~ 60 mA

Maximum temperature for switching on the thermal protection during charging: 65 ° C

Maximum temperature limit for switching off the thermal protection during charging: 55 ° C

Lowest temperature for switching on the thermal protection during charging: -5 ° C

Minimum temperature limit for switching off the thermal protection during charging: 0 ° C

Maximum temperature for switching on the thermal protection during discharge: 75 ° C

Maximum temperature limit for switching off the thermal protection during discharge: 65 ° C

Lowest temperature for switching on the thermal protection during discharging: -10 ° C

Minimum temperature limit for switching off the thermal protection during discharging: 0 ° C

Internal resistance of the discharge circuit: 5 mΩ

Current self-consumption in normal mode (with load): 20 mA

Current self-consumption (no load): 200 μA

Delay and conditions for switching to idle mode: after 10 s without current load, communication or protection mode

Normal operating temperature range: -20 ° C ~ 70 ° C

Storage temperature range at relative humidity <90%: -40 ° C ~ 85 ° C

Dimensions (W × H × D): 102 × 138 × 18 mm

Before first use, it is necessary to connect the negative pole of the battery to the balancer. Then it is necessary to connect the balance connector, which is already connected to the individual cells of the battery. Failure to follow this connection sequence may result in permanent damage to the balancer.

The BMS package includes connection cables. Bluetooth is integrated inside BMS.

Using this app (QR code leads to the source of the app; it is a third-party product), you can remotely set some of the parameters and monitor the status of individual battery cells on the portable communication device. However, we do not guarantee that this application will be functional in all devices in relation to their operating system version and other parameters. As this is a third party add-on and solution that is not strictly necessary for the actual operation of the device, we do not accept any liability for any malfunction of the device or for any consequential damage to the device, property or personal health.

On this link (links to a new browser window on the Youtube website) you will find a video tutorial (as a third party product) for the operation and use of this application. The content of this video tutorial does not replace the user manual of the device and it is still true that in order to put the device into operation, it is essential to follow the procedure given in the user manual or ask a professionally qualified person.