JK Inverter BMS Quick Setup Guide

New to JK BMS? Confused about the various BMS settings? We have carefully prepared a quick guide for JK BMS to help you quickly set up your battery.

Here, you'll find the essential steps to connect, configure, and smoothly operate your BMS. We've provided basic instructions to help you power on the system, connect via Bluetooth, and monitor your battery. You can also find direct download links for the official JK-BMS apps for Apple and Android devices, allowing you to manage and fine-tune your system directly from your phone.

 

JK Inverter BMS wiring diagram

⚠️ Important: DO NOT CHANGE PASSWORD (Click Here) Recovery Instructions

Warning: Do not change the system password on the BMS. This may result in loss of access and, in some cases, could even render the device completely inoperable.

If your BMS has been locked or disabled after a password change or a failed firmware update, follow these steps to recover:

1. Connect the BMS to the battery — only the main negative and positive terminals. Balance leads are not required.
2. Connect the communication cable to the “-” terminal of the RS485 port.
3. Set DIP Switch #1 to ON (all other switches should be OFF).
4. In the PC software, open the “Firmware Upload” tool and select the correct firmware file (e.g., version 14.19).
5. Click Force updating and enter the unlock code.
 Get your unlock codeby entering your serial number from the app.
6. Press and hold the BMS power button, then briefly press the reset button. Continue holding the power button until the update completes and a confirmation beep is heard.
7. The BMS will power off. Turn it back on — a beep will confirm success. All settings will be restored to factory defaults, so you may see some initial errors before connecting the balance leads.

Note: This unlock code also allows firmware downgrading — a feature not supported by the original JK method.

Get the code>>>

Detailed tutorials and user manuals

📄 JK Inverter BMS – PDF File Download

Here you can download the official PDF manual for the JK-BMS Inverter BMS. This document covers the following models:

• JK-PB1A16S-10P

• JK-PB1A16S-15P

• JK-PB2A16S-15P

• JK-PB2A16S-20P 

📥 View / Download PDF

JK BMS connection inverter configuration tutorial

In the following video, we show you what operations you need to perform on the inverter to achieve perfect communication when connecting JK BMS to inverters such as Deye and Growatt.

Connect to multiple Inverters

To Deye
To Growatt(CAN)
To Growatt(485)
To Must

Further reading:

🔗JK BMS inverter communication protocol settings

🔗JK BMS Hardware Upgrade Failure Troubleshooting Tutorial

For more details, please contact us.

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