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Si Jones edited this page Jul 21, 2024 · 11 revisions

Welcome to the DiyBatteryBMS wiki!

The DIY Battery BMS has the following features:

Victron Support

Receive data from a Victron Smart Shunt (different models supported) in the Victron Text Protocol

CAN Bus (Pylontech Protocol)

Send Charge Voltage
Send Charge Current
Send Battery Voltage
Send Battery Current
Battery charge request flags Currently a fake Battery Temperature is sent, this will be changed in the future.

Features

UI for monitoring and configuration changes of all parameters.
MQTT sending of data in JSON format
Reduce charge current by SOC
Force Charge by Inverter for Off Peak Charging (triggered via MQTT)
Adjustable Charge Voltage and Current
OTA Updates
LCD Display 20x4

Recommended hardware:

Victron Smart Shunt

** The above are affiliate links and if you buy it helps support my efforts :) **

For detailed installation please see the Install wiki page!

Steps for the project

Follow the install page
Follow How to Wire the CAN Bus Adapter Page
Follow How to Can to Inverter Connection Page
Connect the Victron Device to ESP using the How to Connect to Victron Shunt Page
Power up your ESP Device
Connect to the Access Point it creates and configure it to connect to your network - http://diy-batterybms.local or http://192.168.4.1
Connect again http://diy-batterybms.local, configure the options as per your setup, go through each page - BMS / Settings.
Get a beer, your done :)