Thank you for your support and recognition of the PB series products launched by JKBMS. 
  After more than a year of optimization, the V19 version of the PB series products has officially gone into mass production. 
  In the future, JKBMS(JIKONG) will develop more interesting functions based on the V19 version.
  Here, we would like to express our special thanks to Andy for his valuable suggestions on the optimization and upgrade of the PB series products. 
  Andy is a highly professional and upright engineer who has extensive experience in the construction of energy storage systems.
  Andy's YouTube account is Off-Grid Garage. He has shared many test videos about energy storage systems on YouTube. 
  In the future, JKBMS(JIKONG) will also collaborate with Andy to release some videos on the usage methods of the product.
  
                                                              -@2025-05-12 by JKBMS
															  
  V19.05  Upgrade logs		
  1.Add the function of parameter import and export.
  2.Increase the two parameters of the TMPStartHeating and TMPStopHeating to independently control the heater.
  3.RCV RFV time limit range has been modified to a maximum of 25 hours.
  4.The JKBMS CAN adds support for NMEA2000 and PGN 127508.
  
  
                                                              -@2025-05-12 by JKBMS

  V19.10  Upgrade logs		
  1.After the capacity is set, the cycle capacity will no longer be cleared.
  2.Added the function of zeroing the current, eliminating the zero drift current.
  3.Add the function of low-temperature protection during discharge.
  4.Increase the Re-Bulk SOC parameter, optimize the float charging logic, and remove the RFV timer. For detailed information, please refer to the video posted by Andy on YouTube.
  5.Optimize the communication protocol of the energy storage display

    
                                                              -@2025-07-16 by JKBMS
															  
  V19.11  Upgrade logs		
  1.The activation button can be used to adapt to both the self-locking button and the reset button simultaneously.
  2.In the parallel mode, the current request margin has increased from 5% to 20%.
  3.The overcurrent protection is increased by 2% to meet the requirements of some aging cabinets.

    
                                                              -@2025-07-29 by JKBMS
															  
  V19.13  Upgrade logs		
  1.Add some reserved communication protocols..
  2.Upgrade the LCD protocol and support 3.2-inch segmented display.
  3.Upgrade the Bluetooth communication protocol to V2.0.
  4.Update the Growatt CAN protocol.
  5.Add support for LIN bus.
    
                                                              -@2025-09-18 by JKBMS
															  
  V19.18  Upgrade logs		
  1.Fix some known bugs.
  2.Guruvat CAN protocol optimization. 
  3.Add SOC above trigger to Dry contact.
                                                              -@2025-11-06 by JKBMS
  V19.21  Upgrade logs		
  1.Optimize the current calculation method to improve accuracy.
  2.Optimize the parallel logic of the PB series protection board, 
    so that the slave packs can also monitor all the information of the batteries.
  3.Fix some known bugs.
                                                              -@2025-12-04 by JKBMS