Pylontech battery cables

Q&A and troubleshooting
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1

I am just about to install 2x Pylontech US 5000 with multiplus ll 48v 5k, I have concerns over the ratings of the available pylontech battery to inverter/charger cables.

I would like to hear from anyone with experience of these cables.

Regards.

2

Use one for each pylontec and a bus bar for the system. it allows easier expansion and adaption in the future. I don’t like daisy chaining them as cable does get warm - not safety concern warm- as their insulation is rated for higher temps. For me heat = inefficiency to me that is just waste.

But the rating of the cable insulation if it is a OG one is ok for a 5kVa system during full load discharge with a pair of up5000s sharing one cable. (If that is what you have to do)

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Thanks, for some reason I can’t find the cable rating online and haven’t had time to pick the cables up from the supplier.

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@Janda From the Pylontech manual, which is readily available online.

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image1444Ă—1248 223 KB

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@Janda As has been mentioned run pylontech extension cables to each battery but you will need a bus bar to connect them to and some bigger gauge cable to connect the bus bar to the the Multi, if you daisy chain the Prylontechs you limit the potential of the battery charging and discharging as 2 batteries are capable of 200amps but daisy chained they are technically to be safe only capable of 100amps charge and discharge due to the single pylontech cable only capable of 100amps continuous as @ejrossouw has posted, so if your building a system and you want to expand at some date implement these changes now and save yourself work in the long run. Hope that helps

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:grin: Thanks I found it just after posting, I must have been having a senior moment.

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Thanks, that’s a good idea, I assume the BMS will manage the load etc across the bank?

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Yes mate they can handle 15 batteries all connected to one master so fill your boots, if you look on show your install you can see that I’m building up my second bank of 4

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always the same answers :slight_smile:

He has a MP2-5000 - so max Load ist 70A - how should he ever draw or feed 200A to / from the Batteries?

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For my small system and using DVCC and the parameter’s of the version my mulitplus 2 and the output from my MPPT (150/45) I don’t think a series installation would be an issue; however there was a very interesting post on the old Victron forum where they used a heat camera on a series battery bank and it showed quite an increase in the cable temperature, which I am sure was within the cable tolerance but is something that I want to avoid.

So Lynx is on order and will run each to the bus bar.

Thanks for the input :+1:

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