Mever 1200Va Trolley in error mode

[BasBas]

Good day

I have a Mecer 1200Va 700watt inverter trolley with a 100Ah Revov 1st life lithium battery. Bought from Geewiz
I have cycled the battery no more than 5 times and never below 70% SOC (IE only 30% Depth of discharge)

Voltage is at 13.7 Volts confirmed with a multimeter and the BMS app.

Inverter charges the battery and is fine until the power is disconnected.

When the power disconnects I can hear the relay thud and then immediately after the inverter displays the error screen and an audible beep is heard.

I have disconnected all loads from the inverter, the same thing occurs. I have never drawn more than 400Watts from the inverter and my average load is about 150Watts.

 

[BasBas]

This all stated today after i left home for a week. When I left I switched the inverter off and unplugged it, battery was fully charged when I left and fully charged when I arrived a week later (today).

Plugged everything back in and this is when the errors as stated above started, inverter is about a month old.

Charging is at 10A

 

[leon.davibe]

I would disconnect eskom power , then Disconnect one battery terminal ,reconnect battery then eskom

If doing so does not void any warrantee/ stickers

And power on to check it

The voltage on battery stays normal when error code happens ?

If it still misbehaves i would contact geewiz