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j5_immortal

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    j5_immortal got a reaction from Jaxone in Growatt Inverter + Pylontech Batteries : BMS Comms Guide   
    For those who want to combine older US2000 batteries with new UP5000 batteries:

    After back and forth communications with Pylontech ZA who wanted me to bring my US2000 batteries in for them to check, I eventually got them so far to provide me with version 3.4 Firmware for the batteries.

    After upgrading a stack of 4 x US2000 batteries with new firmware version 3.4, my 4 x UP5000 stack now communicates correctly with the US2000 batteries.  Everything looks balanced and also works with the 2 x Growatt inverters on Li04 - 36 setting.
    I used a USB to serial (DB9m) converter and made another crosslink cable from DP9F to RJ11 to link to the batteries. Batteryview 3.0.33 worked fine

    The Firmware works for the standard US2000 and US2000B Plus
    Here's the firmwareus2000B_Plus_V3.4_Crc.bin

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