PurePower

us3000c_v2.6_Crc.bin

Check this post for v3.0.24. This is the latest I have.

Hey Rooney, Any new firmware for the US3000C? I have noticed with v2.4 that BatteryView seems to get disconnected from the pack and reconnects... it is rather strange as i did not experience this with v2.2 Lemme know, thank you.

Thanks

Use BatteryView from my previous post on this thread. There will be info on the left hand side.

Try BatteryView version 3.0.24 from the thread below.

Here you are... Only the one that you plug into will update. You will have to plug into each module separately.

Check the first page of this thread... its there v2.2 for the US3000C

Downgrade is possible. I have done it before. Just use the appropriate firmware file version and load it as per normal.

Can you please share the firmware file? It looks like its for the US2000B modules?

Are these Pylontech batteries? Do you have any pictures, spec sheets or manuals?

Awesome... do you perhaps know what changed from v2.1?

There is also http://www.multisibcontrol.net/

You have the 145vdc version, so 2S is correct with a max of 4P. 4280W is well below the 25%(5000W) threshold. So 2S4P(8 panels) is correct for those size panels.

Sometimes the Axpert sticker will also have a maximum input current value. The below pic is an example of the 450vdc solar charge controller on the Axpert, max inpur current 18A. More panels in series is better for this model.

Yip, both cables will go to my Mersen DC breaker. I currently have 125A Fuse in it, which is more than enough for my usage. My battery pack will only allow up to 137A of draw at a time but I don't want it to get there as it is unnecessary for my electricity demand. Technically, I could have each cable set going to a busbar prior to the DC breaker but I feel its not required in my setup. Between the DC breaker and the inverters I have 35mm cable. Here is a pic of my setup, I have circled the DC breaker.

Apologies, that's an old picture. I was having trouble back then with the US3000C mixing with the US2000 and was testing if removing the link cables would solve the problem but it didn't. Firmware v2.1 for the US3000C solved all the issues. Below is the latest pic taken now, link cables all in place.

Thank you. Best online place to order that cable pack from?

Great thanks, which document is this from?

I have an idea but not sure if its safe to do so. I have 5 Pylontech modules(1xUS3000C & 4xUS2000). They work very well. I recently installed more PV panels to attain more amps to charge the batteries as in winter it was struggling with my previous single array. I now have 6kw of PV power and can roughly translate to 120A of battery charging on a good day in summer. My batteries will take up to 137A based on the BMS values but i doubt my PV will be able to deliver that much. My concern is that the Pylontech cable pack that is supplied with these batteries are not rated high enough for this constant current while charging. From what I read, its rated at 120A but I am not convinced as the cable is not as very thick. Right now, its taking 80A to the battery and the cables are warm to touch in this icy cold weather, now how warm or hot will it get in summer with a higher environmental temp and higher amps and will it hold out? Has anyone tested its actual rating or found a review out there on these cables? I was thinking of adding a second cable pack to address my concern but I am not sure if its entirely feasible or safe? Below are my batteries current configuration, pretty standard. I want to add the second cable pack and attached it to the blue circled unused connectors. Is this a dumb idea altogether? Opinions and thoughts would be appreciated.

What inverter are you using? and is your inverter connected to the Master battery? Are you able to see what the charging params are on the inverter?

v2.1 is the latest on this forum for the US3000C. Check this thread.

What value is setting 27 set to? I have mine at 51.8

I am running those settings as well and they are perfectly suited for US2000;US2000B;US2000Plus;US2000C;US3000A;US3000B;US3000C;UP5000

I had to update my US3000C as it was not playing well with my US2000 modules. Every night, during discharge around 60% SOC, it would throw a SysError and it would shut down while the rest of the US2000's in the pack continues to work. After the update, that issue was resolved for me.