Keith van Dijk

the constantly in float is a big deal with lead acid if the voltage is too high, with the lithium not so much they dont take on more charge the current drops to nothing although the voltage is high
 
 

It appears that the charging settings in your Ellies FBIC3000VA/24V inverter are not optimal for your 3.7kw Lithium battery, which could potentially cause damage over time. To correct this, you should consider adjusting the following:
Boost Charging Voltage: Consider increasing this value to the recommended Equalized Voltage of 28.8 Volts, to ensure the battery is properly charged. Float Charge: This value should match the recommended Float Voltage of 28 Volts. If you are unable to increase the value to 28 Volts, it may be necessary to contact the manufacturer for assistance or a firmware update. Low Voltage Disconnect: This value should match the recommended Cutoff Voltage of 22.4 Volts. It's important to note that these values are specific to your particular Lithium battery and may vary from manufacturer to manufacturer. It's best to consult the battery specifications or a specialist to ensure that you are using the correct values. By properly setting the charging parameters, you can optimize the performance of your Lithium battery and prolong its lifespan.
   

@William heiden hi, its because your inverter is rated at higher power than your battery can give. 7200/50 = 144 amps, if your battery is of 1C type it can handle a surge of no more than 100amps,if its. 5C it can handle no more than 60 amps.
Therefore its always a rule of thumb to at least match your inverter and battery 1:1.
This happens when grid is not available, which means all the demand comes from the battery. 
All is not lost, but you will have to babysit your load during loadshedding and make sure you dont  load it above 5kw. 
Your MAX has a maximum battery discharge current setting in its options, but it will still give an error when there is a surge thats too high. 
 
 
 
 
 
 
 
 
 

On a distance of 10 meters the voltage drop is minimal, the fact that you only getting 10 KWH out of your system maybe the fact that is all you using, the system will clip whatever is more than your load.