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JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual
NO: JK/J.JK-B2A8S20P.01
Ver: V1.1
JK Smart BMS
JK-B1A8S20P/JK-B2A8S20P
User Manual
Translated by
Energiepanda.com
from JK's original Chinese version
1 /22
Energiepanda.com, providing you with quality accessories for DIY batteries.

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Summary of Contents for JK B1A8S20P

  • Page 1 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual NO: JK/J.JK-B2A8S20P.01 Ver: V1.1 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual Translated by Energiepanda.com from JK’s original Chinese version 1 /22 Energiepanda.com, providing you with quality accessories for DIY batteries.
  • Page 2: Main Technical Specifications

    JK BMS has smart Android and IOS APPs. APP can be connected to the BMS via Bluetooth to check the working status of the battery, modify the working parameters of the board, control the charging and discharging switches, etc.
  • Page 3: Environmental Conditions Of Use

    JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual Maximum Discharge 350A Current Overcurrent Protection 10~200 A (Adjustable) RS485(customized)/CAN(customize Other Interfaces d)/ Heating(customized)/ LCD display Port Type Common Port Single Cell Voltage 1~5 V Range Voltage Acquisition ±5 mV Accuracy Overcharge Protection 1.2~4.35 V Adjustable...
  • Page 4 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual a) Operating Temperature Range:-20℃~70℃; b) Power requirements:10~40V。 c) Power consumption: 25mA@40V in balanced state, 20mA@40V in unbalanced state 3 Connector and interface decription 3.1 Connectors, LED light location description Figure 1 - JK-B1A8S20P/JK-B2A8S20P Connector 4 /22 Energiepanda.com, providing you with quality accessories for DIY batteries.
  • Page 5 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual 3.2 Connectors and LED definition description Table 2 Connectors, LED Definition JK-B2A8S20P Connector Pin Number Name Definition Negative battery terminal Positive pole of #1 cell Positive pole of #2 cell Positive pole of #3 cell...
  • Page 6: Product Appearance

    JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual 3.3 Product appearance Figure 2 JK-B1A8S20P/JK-B2A8S20P Appearance 6 /22 Energiepanda.com, providing you with quality accessories for DIY batteries.
  • Page 7 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual 3.4 Product size The dimensions of JK-B2A8S20P is 153 mm x 126 mm x 17.6 mm. 3 B2A8S20P Size Figure 3.5 Weight The weight of JK-B1A8S20P/JK-B2A8S20P BMS is 349g. 7 /22 Energiepanda.com, providing you with quality accessories for DIY batteries.
  • Page 8 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual 4 Installation method and precautions 4.1 Open box inspection and precautions are as follows. a) The boxes and BMS should be handled lightly and not inverted as much as possible. b) Before opening the box, pay attention to whether the packaging is intact, such as whether there are signs of impact, whether there is damage, etc.;...
  • Page 9 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual 5 8S battery wiring diagram Figure 9 /22 Energiepanda.com, providing you with quality accessories for DIY batteries.
  • Page 10 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual 4.3 APP installation The QR code shown in Figure 6 can be scanned to obtain the mobile app that accompanies the product. Figure 6 QR code for APP download 5 Instructions for use 5.1 Preparation and inspection before use...
  • Page 11 7. Click the icon on the top left corner to scan the device, wait until the scanning is finished, then click the name of the device you need to connect, such as "JK- B2A8S20P". When you connect for the first time, the APP will prompt you to input the password, the default password of the device is "1234"...
  • Page 12 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual b) Change passwords and device name Click the "pen" icon on the right side of the device list to change the device name and password. Note that the device name only supports English or numbers.
  • Page 13 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual 5.3.2 Battery status view The real-time status screen is shown in Figure 11. Figure 11 Real-time status screen Zone 1 in the figure is the comprehensive information column of the battery. The parameters of each parameter are explained as follows.
  • Page 14 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual c) Discharge It’s the status of the BMS discharge MOS. When "On" is displayed, it means the BMS discharge MOS is on and the battery is allowed to discharge; when "Off" is displayed, it means the BMS discharge MOS is off and the battery is not allowed to discharge.
  • Page 15 JK BMS adopts active balancing technology. The principle of balancing is to take power from the high voltage cell, store it in the BMS, and then discharge it to the low voltage cell.。...
  • Page 16 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual Parameter Setting The parameter setting page is shown in Figure 12. Figure 12 Parameter setting page display If you need to modify the working parameters of the BMS, you must first click the "Authorize Settings"...
  • Page 17 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual a) Li-ion buttion Click this button to change all the working parameters of BMS to Li-ion parameters, and the default values of Li-ion battery parameters are shown in the Appendix. b) LiFePO4 button Click this button to modify all working parameters of BMS to LiFePO4 battery parameters, the default values of LiFePO4 battery parameters are shown in the appendix.
  • Page 18 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual The current calibration function can be used to calibrate the accuracy of the BMS current collection. When you find an error between the total current collected by the BMS and the actual current of the battery, you can use the current calibration function to calibrate the BMS.
  • Page 19 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual m) Max Discharge Curr.(A), Discharge OCP Delay(S), Discharge OCPR Time(S) When discharging the battery pack, the current exceeds the "Max Discharge Curr.(A)" and the duration exceeds the "Discharge OCP Delay(S)" time, the BMS generates the "discharge over-current alarm" and turns off the discharge MOS at the same time.
  • Page 20 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual ℃ ℃ s) MOS OTP( ), MOS OTPR( When the MOS temperature exceeds the " " value, the BMS generates the "MOS MOS OTP(℃) over-temperature" alarm and turns off the charging and discharging MOS, so the battery cannot be charged or discharged.
  • Page 21: Transportation And Storage

    JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual Figure 13 BMS control page 5.4 Safety protection measures and precautions BMS itself does not exist high voltage, will not cause electric shock injury to the body. Before use, please read the instruction manual carefully, according to the correct wiring diagram of different strings, connect the balancing wires one by one from the negative pole to the positive pole.
  • Page 22 JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual Appendix Default parameters of "one-click Li-ion", "one-click LiFePO4" and "one-click LTO" Parameters Li-ion LiFePO4 Unit Cell Under-voltage Protection Cell Under-voltage Protection Recovery Cell Overcharge Voltage Protection Cell Overcharge Protection Recovery Voltage Difference of Trigger 0.01...

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