### Main functional features:
1. There is an upper computer software for PC - side monitoring, with isolated RS232 / isolated RS485 / isolated RS422 / isolated UART and isolated CAN interfaces, as well as non - isolated SMBUS communication. It is convenient to connect with a computer to read the voltage of single - cell batteries, the overall capacity, the number of charge - discharge cycles, the temperature of the battery pack, SOH, SOC, etc.
2. There is a mobile Bluetooth client, and the status of the battery pack can be monitored by installing an APP software on the mobile phone.
3. The protection parameters can be flexibly edited and modified, saved in the storage chip, and the data can be stored for 50 years without loss.
4. The high - precision coulomb counter has temperature compensation, self - discharge compensation, and a learning function. After successful learning, the power accuracy can reach an error of 5%.
5. 16 - bit high - precision current and voltage sampling improve the sampling accuracy and performance of the BMS.
6. After over - current, it will automatically recover within 10 - 30 seconds without disconnecting the load. After over - discharge, it does not automatically recover by default (automatic recovery can be selected).
7. After short - circuit protection, the load must be disconnected.
8. Supports JEITA intelligent chargers, perfectly protecting the safety of battery charging and greatly extending the battery life (optional).
9. With pre - discharge and pre - charge functions, it can reduce the spark when the customer connects (optional).
10. Charge - discharge temperature protection.
11. Built - in event fault recording black box function, recording data such as the highest voltage, the lowest voltage, and over - current conditions during the battery use process (optional).
12. With a secondary protection function (only effective for continuous currents less than 30A), a battery permanent failure protection function (FUSE function), ensuring the safety of the battery at all times (optional).
13. Perfect passive equalization circuit to prevent the equalization circuit from overheating severely.
14. With a weak - current switch to separately control the discharge circuit, eliminating large - current control components, saving costs, and extending the life of components (optional).
15. With LED power display function (optional).
16. With LCD power display function (optional).
17. With low - temperature heating function (1 - 15A) (optional).

### Special attention:
1. If the voltage does not recover to the over - discharge recovery voltage within 10 seconds after over - discharge, it will enter the power - off shutdown state, consuming less than 15 micro - amperes of current. It must be activated by a charger.
2. For over - discharge and over - current, there is a self - recovery function after 30 seconds without disconnecting the load. The load needs to be disconnected for overload and short - circuit.
3. For LED power display, when there is a charging current and it is greater than 200 milliamperes, the power display will turn on automatically. When there is no charging current, the power display will turn off automatically. During discharge, if you need to display the power, you must press the light - touch switch, and the power will be displayed for 5 seconds and then turn off automatically to save power.
4. For LCD power display, the power is always displayed during both charging and discharging (very power - saving).
5. For charging records, the battery must be charged to more than 90% of the power and then fully charged, and the current must be greater than 500 milliamperes to be counted as one charge. For discharge records, the discharge must be stopped when the power is more than 90% discharged before starting to record the current discharge. This is to prevent excessive records due to continuous intermittent discharge.
6. After the sampling wires of this BMS are installed for the first time, the start switch must be pressed (or a charger must be inserted) for the BMS to work properly.
7. For SOC capacity indication, when this BMS is powered on, it will estimate the battery power. After two complete charge - discharge cycles (note: during learning, the maximum current should not exceed 0.5C), the BMS will learn the power by itself, and the power indication will be the most accurate at this time.
8. This BMS already has a standard RS232 communication interface. There is no need for an expensive adapter board. Only an RS232 - to - USB conversion cable is needed to connect to the PC - side USB interface.
9. The RS232 - to - USB adapter cable must be installed with the correct driver to connect to the upper computer on the laptop. (See the attached instruction document for the installation method.)