Almost finished with my switch to lithium batteries in my RV

[Factsmanmp]

I’m having an issue with my 3000 w inverter. When I turn on the microwave, it shuts down the inverter after about 30 seconds. Any ideas?

 

[JeromeS13]

Have you already upgraded batteries? What chemistry? What size wiring? What's your LBCO setting on your inverter? We need more information...

 

[mikefitz]

shuts down the inverter after about 30 seconds.

Low SOC in the battery.
Battery current discharge limit exceeded.
Volt drops in connections, cable, breaker, fuses between battery and Inverter.
Inverter settings , if available, for low volts disconnect set too high.
Faulty microwave.
Faulty Inverter.
Assuming everything worked with the old setup then it's down to the changes made to the system.

Investigation with a multimeter and DC clamp meter should identify the cause.

 

[richard cabesa]

Not near enough info to help you.
We need more.

 

[Factsmanmp]

Have you already upgraded batteries? What chemistry? What size wiring? What's your LBCO setting on your inverter? We need more information...

Yeah. I have two 206ah SOK 12v batteries. The inverter is a 3000w Renogy Inverter, not the inverter/ charger. Not sure what the LBCO setting is.

 

[Factsmanmp]

Low SOC in the battery.
Battery current discharge limit exceeded.
Volt drops in connections, cable, breaker, fuses between battery and Inverter.
Inverter settings , if available, for low volts disconnect set too high.
Faulty microwave.
Faulty Inverter.
Assuming everything worked with the old setup then it's down to the changes made to the system.

Investigation with a multimeter and DC clamp meter should identify the cause.

This is a new setup. Lead acid with no inverter to lithium and new inverter.
SOC is 100% ( two SOK 206ah batteries in parallel)
I will look for the battery current discharge limit of the batteries.
Did not see a voltage drop at inverter or at the wall plug. Phone app from SOK showed a 96 A draw when microwave is running prior to inverter shutdown.
Tried a different microwave and had same results.

 

[time2roll]

Does Renogy give any error code? Most likely 'overload' or 'low input voltage'
Please try a hair dryer on low, med and high and see how well that works. Use a voltmeter on the Renogy DC input terminals to verify voltage as power is increased.