Battery OVD warning

[Fetty]

My md-50 is giving me a battery OVD warning when the sun is producing more power. I am a newbie. Just set it up.
My system is a 12 volt. I have :

Serial panel setup

Giandel Pure Sine Wave Power Inverter 3000 Watt
CHINS LiFePO4 Battery 12V 200AH Lithium Battery
EPEVER 40A MPPT Solar Charge Controller
2 - 260 watt Solar panels Attached pics of stats



Series

 

[Supervstech]

You have the float voltage set too high.
Need to keep float below 13.8

 

[mikefitz]

What charge settings on the Epever?

The battery may be having BMS shutdown due to high cell volts.

 

[Fetty]

What should the settings be?

 

[TomC4306]

Bulk/absorption = 14
Float = 13.5
IMO.

 

[Fetty]

Man, I cant figure out how to change the float on the MD-50????

 

[Fetty]

Also, I notice the rate volume is set to 24V...Is that correct?

 

[Fetty]

Also, I notice the rate volume is set to 24V...Is that correct?

Nevermind

 

[Fetty]

Bulk/absorption = 14
Float = 13.5
IMO.

What is the Bulk/absorp?tion

 

[mikefitz]

What is this MD 50, do you mean MT 50?

 

[Fetty]

What is this MD 50, do you mean MT 50?

Yes

 

[mikefitz]

Bulk/absorp?tion

In your controller it's termed 'boost'. It's the voltage the battery charges to. Once the charger determines the battery has reached the boost voltage, the bulk stage is completed. ( the bulk stage is when the battery is almost fully charged).

The charger then holds the voltage constant at 'boost' level for 'boost duration', this is the absorbtion period where the battery charge is completed.

Once boost duration is over the voltage falls to float volts.

 

[Fetty]

In your controller it's termed 'boost'. It's the voltage the battery charges to. Once the charger determines the battery has reached the boost voltage, the bulk stage is completed. ( the bulk stage is when the battery is almost fully charged).

The charger then holds the voltage constant at 'boost' level for 'boost duration', this is the absorbtion period where the battery charge is completed.

Once boost duration is over the voltage falls to float volts.

Great Thank you. I will set the Boost at 14 and see what happens.

 

[Fetty]

No matter what I do, with both panels connected, It shuts down when the Wattage gets to about 470