Good morning. I need help please. I have made my own battery banks using JK BMS V19. I have tried to connect the batteries using the Ethernet cable provided with the BMS. I can’t seem to get them to talk to each other. Can you let me know where I have to put the Ethernet cable in the communication …

[20260305_215216] diy Yixiang batteries with pre- build in jk v19 bms.. Victron type A canbus cable to the Cerbo mk2 [20260310_162859]

Why didn’t you use pre build 24 volt (empty) battery boxes from Yixiang or other suppliers? And why 24 volts and not 48 Volts?

Are there no fire safety regulations in your country?

Morning Gary. Welcome to the Victron community forum. From the other side of the pond. Ok. We need you to tell us the firmware revision on the JK BMS boards (all the same?) and what to BMS-can-protocol is set to in your Cerbo GX device. Also note the dipswitch settings that @Frisianstar shared her…

I would seriously reconsider using proper steel casings, wooden housings are a bad idea for fire risk and are unlikely to pass any regulatory safety requirement in a first (or second) world country. There are various topics here about this BMS which is a good starting point. It is concerning that …

Hast Du die einzelnen Zellen mit einer Zwischenlage gegeneinander isoliert?? Wenn nicht, hast Du ein großes Problem was nur auf eine Beschädigung der dünnen Außenfolie lauert. Sollte die Außenfolie beschädigt werden, kann das Becherpotential durchschlagen. Hierbei möchte ich dann nicht im Raum zusa…

Hi Karl. Yes I did on all of them

Hi Nick. I asked my supplier who I bought the stuff off and his reply was he doesn’t have a clue with 3rd party BMS systems. This is why I’ve asked on this platform.

Hi BAnders. I will check tonight and get back to you. They are in an off grid cabin. Thank you for answering my question

Hi Frisandstar. Thank you for the pictures. I have done in the pictures. It still did not work. So I’m am still doing something wrong.

Connect home made lifepo4 battery banks to the Victron cerbo GX

Modifications

Frisianstar 9 September 2026 05:24 13

Read this post:

Www.diysolarforum.com may be usefull, a lot of topics about the jk bms v19

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Connect home made lifepo4 battery banks to the Victron cerbo GX

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