Smart BMS Li-ion 7S 24V 50A with Bluetooth

New  Smart BMS Li-ion 7S 24V 50A with Bluetooth

1. Cell phone app monitors the battery charging and discharging status. Single battery overvoltage and undervoltage, battery pack overvoltage and undervoltage, balance voltage, high and low temperature, and release value can be adjusted.


2. The communication module is connected to computer to monitor the battery data, set parameters, read BMS communication protocol and communicate with the device.


3. Imported IC software and hardware dual protection. Software running real-time monitoring program plus secondary protection. Sleep and low standby power consumption, high-quality electronic components.


4. It calculates the remaining capacity and charge capacity of the battery based on the current versus time score.


5. Temperature control detection: BMS built-in balanced power temperature control to detect.Adjustable high and low temperature protection function, the temperature sensor is strong and not easy to break.


6. App display interface has speed measurement function. It can accurately detect the speed based on Hall pulse and calculate the remaining mileage.


7. It supports Bluetooth, UART and RS485 UART double communication.

The differences are as follows:

1)Bluetooth APP is suitable for cell phone to view and adjustable parameters.

2)UART communication port is suitable for viewing and adjustable parameters on the computer.

3)Recommended you choose UART RS485 double communication and order a RS485 module are suitable for users who want to view and modify parameters on cell phone and computer at the same time.

4) We will send you a Bluetooth module after ordering so you don't need to buy additional Bluetooth.

If you just want to order the BMS with UART port we recommend that you buy one more UART module so you can switch between them on your phone or PC. but please pay attention to the Bluetooth and UART are common ports, you have to use only one of them.


8. APP software reference interface display:

01) Percentage capacity

02) Temperature

03) Charge time

04) Total voltage

05) Remaining capacity

06) Power

07) Voltage range

08) Voltage diff

09) Charging turn on / off

10) Discharge turn on / off

11) Protection state

12) Cell balance

13) Each cell voltage

14) Nominal capacity


9. Warm tips:

For example: How to purchase a Smart BMS Li-ion 7S 30A?

1. Connect to cell phone only: select 30A current + Li ion 7S UART add it to shopping cart.

2. Connect to PC or Phone: select 30A current + Li ion 7S UART add to cart and add an UART module to shopping cart, then payment together.

3. Connect PC and cell phone both: select current 30A+ Li ion 7S UART 485 add to cart and add the 485 module to shopping cart, then payment together.

4. Using app for the first time, please change nominal capacity to actual capacity, cycle capacity is actual capacity * 0.8

5. The order only included the Bluetooth but it's not include the UART module. If you need the UART module please contact us to purchase.




BMS Parameter table


Li-ion 6S 7S 10S

❖Charging voltage

6S/7S/10S x 4.2V


❖Charging cut off

Voltage detection: 4.25V ± 0.03V

Voltage release: 4.15V ± 0.03V

Detection delay: 1000mS


❖Discharge cut off

Voltage detection: 2.7V ± 0.1V

Voltage release: 2.9V ± 0.1V

Detection delay: 1000mS


❖Auxiliary cell balance

Turn on voltage: ≥4.0V

Turn off voltage:<4.0V

Balance current: 50-60mA


LiFePO4 8S

❖Charging cut off

Voltage detection: 3.75V ± 0.05V

Voltage release: 3.6V ± 0.05V

Detection delay: 1000mS


❖Discharge cut off

Voltage detection: 2.7V ± 0.1V

Voltage release: 2.8V ± 0.1V

Detection delay: 1000mS


❖Auxiliary cell balance

Turn on voltage: ≥3.4V

Turn off voltage:<3.4V

Balance current: 50-60mA


❖Charging voltage

8Sx 3.6V


❖Discharge current

20A 30A 40A 50A


❖Charging current

10A 20A 30A 40A


❖Overcurrent cut off

Voltage detection: 150mV

Detection delay: 5mS

Release method: disconnect load


❖Short circuit cut off

External load short circuit

Detection delay: 250uS

Release method: disconnect load


❖Self-consumption

Work power consumption:<40uA

Release method: Disconnect load

Sleep power consumption:<30uA


❖High and low temperature cut off

Discharge over temperature: 75℃±5℃

Release method: <60℃

Charging/Discharge under temperature: -10℃

Release method: 0℃

The scope of work: -20℃/ +80℃





Basic protection parameters content:


1) Cell overvoltage, cell undervoltage, battery pack overvoltage, battery pack undervoltage.


2) Charging high and low temperature, charging overcurrent, discharge overcurrent protection parameters, release value and protection and retention time.


3) Release is divided into conditional release and time release. The protection holding time means the time needed to reach the state of a certain protection.


4) Example:

The overvoltage of the battery is 4.25V, and the overcharge protection is triggered only when the voltage of a single battery is ≥ 4.25V and lasts for 1S.

The battery voltage is less than 4.15V and lasts for 100ms to release overcharge protection.

The voltage must be reduced below 4.15V before charging can be restarted.


5) example: if the discharge current continues to exceed 30A, 5S is triggered to disconnect the discharge MOS, the recovery condition is automatic, and 32S is automatically released from the discharge overcurrent.


6) This BMS has a balance function. Your battery voltage difference should not exceed 0.05V, capacity difference should not exceed 30mAh, internal resistance difference should not exceed 5mΩ, the battery should have good consistency, old and new battery can not be mixed. If you are not sure, please use a brand new battery will be better.



Warm tips


1. Please use it be careful when installing to avoid short circuit.


2. Do not remove or replace the components of the protection board by yourself.


3. Lithium battery protection board with different voltages cannot be mixed. For example, lithium ion BMS cannot be used for Lifepo4.


4. The charge and discharge current cannot exceed the rated value.


5. Please do not change the circuit board .


6. Please use the protective boad within the specified working temperature range and ensure a good heat dissipation environment around the protective board.


7. Design parameters and use conditions must be observed during use because improper use will damage the circuit.

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  • Views: 720
  • Product Code: Smart BMS 7S 50A UART RS485
  • Availability: In Stock
  • KES 8,000.00

Tags: BMS, 7S, 50A, Battery Pack, 48V, Li-ion

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