Advice Needed on Max Discharge Rate Setting for Deye Inverter with 12V 200Ah Tubular Batteries

Hi everyone,

I'm looking for some guidance on the settings for my Deye inverter, model SUN-5K-SG04LP1-EU. It's connected to a battery bank consisting of four 12V 200Ah tall tubular batteries, each with a 200Ah@27C and C20 rating.

Currently, I have the max discharge rate set at 80 amps. I'm concerned whether this setting might be too high and potentially harmful to the batteries. Is this discharge rate advisable, or should I consider adding more batteries or adjusting the settings?

Additionally, I need advice on the optimal low voltage shutdown setting for this setup. What is the lowest voltage I should set for the inverter to shut down to protect the batteries?

I have attached images of the current settings. Could you please suggest any changes that would help in better load handling and battery longevity?

Also, If I'm consuming 1kwh from the battery, how long should it last before going down to the shutdown voltage?

Thank you!

Also, I opted for lead acid batteries because lithium batteries in India cost 2x more and come with no accountability from the companies that are selling them in India. So, if the battery pack fails, then you're going to have a hard time contacting the company and getting a replacement battery pack. Whereas on Lead Acid batteries the replacement is same day