Mecer Axpert 5.6KWH & Dyness 4.8 Help Please

Posted April 14, 20232 yr

Hi guys,

So 01:30AM and here I am seeking help.

I have the Mecer Axpert 5.6K MKS and a Dyness 48100 battery.

Installed and working, but it seems the battery is not communicating with the inverter as it shows 100% on the LEDs (SOC) on the battery but on the inverter it shows 25% then 50% but mostly hangs around 50%. This does not change with how much I am drawing, which is 250W as I live alone and don’t have much on, and my PCs ect are off ect. I have checked the settings and they all seem to be correct.

My questions are this:

1: Do I need the comms cable if it’s set to manual(I assume so), and where can I get one as I didn’t get one with it, which is quite rude.? I have 2 cables that came with my Deye but not sure if they will work. Everyone I speak to has a different opinion. At the moment I have the inverter set ti option 5 which is manual. And all the dip switches on the battery off.

2: Please could someone shed some light on settings that could cause this. As I am a lost cause at the moment and I’ve spoken to 3 electricians who basically do not care to help me.

3: How do I update firmware on this thing?

Thanks in advance guys, really would appreciate any feedback.

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April 15, 20232 yr

4 hours ago, JesseHarmsNT said:

but on the inverter it shows 25% then 50% but mostly hangs around 50%.

If you don't have the cable to the battery's BMS, then the SOC will be wildly wrong, because it's assuming a lead acid battery, and they have completely different characteristics.

4 hours ago, JesseHarmsNT said:

How do I update firmware on this thing?

First report your existing firmware version numbers (U1 = main, and U2 = display / BMS interface). That tells us what chipset you have in those two parts.

Firmware update instructions for Axpert inverters with round colour displays.

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