BMS settings look correct?

[jsnbrgg]

Hello. I have a 16s configuration, 280ah battery bank built running an Overkill Solar BMS. These are new CATL cells, LifePo4. Top balanced and full charge. Do the attached screenshots look “ok” for my BMS settings? Thanks!

 

[sunshine_eggo]

Cell full and cell 100% voltages of 3650 are too high. Charging to 3.65V consistently is very challenging as very small deviations may trigger over voltage protection.

Recommend you set those to 3550.

 

[MisterSandals]

Recommend you set those to 3550.

I misread this entire post, more than once.

And i would change cell over voltage from 3.655Vpc to just inside the the theoretical high limit (3.650) to 3.63V to go a little easier on the cells if/when things get out of hand. (battery over voltage 3.63V x 16 = 58.08V)
Similarly on low voltage, i prefer 2.57Vpc to keep them away from the theoretical low limit. (battery under voltage 2.57V x 16 = 41.12V)

OP you did great job presenting this question with all the info!

Just out of curiosity, what are your charge settings?

 

[jsnbrgg]

I misread this entire post, more than once.

And i would change cell over voltage from 3.655Vpc to just inside the the theoretical high limit (3.650) to 3.63V to go a little easier on the cells if/when things get out of hand. (battery over voltage 3.63V x 16 = 58.08V)
Similarly on low voltage, i prefer 2.57Vpc to keep them away from the theoretical low limit. (battery under voltage 2.57V x 16 = 41.12V)

OP you did great job presenting this question with all the info!

Just out of curiosity, what are your charge settings?

I’m glad you asked because I’m not sure if those are right either. I’ll attach screenshots of all the different charge settings pages. Please feel free to offer advice! Thanks!

 

[MisterSandals]

I am not that familiar with your situation but i would think you would want "solar first" charging. Its cheaper than the utility (solar + utility).

Bulk charging 58V is 3.625Vpc which is much higher than you need. Your battery is fully charged at 3.5Vpc (56V battery).
For float, i like to set float just below where YOUR battery settles shortly (half hour?) after a full charge. If after charging, with no load, YOUR battery settles to (just picking a number) 55V, that is 3.4375Vpc. In such a case, i might float at 3.40Vpc (54.4V battery) to prevent micro cycling (charge, settle, charge, settle... continual thrashing).

 

[jsnbrgg]

I am not that familiar with your situation but i would think you would want "solar first" charging. Its cheaper than the utility (solar + utility).

Bulk charging 58V is 3.625Vpc which is much higher than you need. Your battery is fully charged at 3.5Vpc (56V battery).
For float, i like to set float just below where YOUR battery settles shortly (half hour?) after a full charge. If after charging, with no load, YOUR battery settles to (just picking a number) 55V, that is 3.4375Vpc. In such a case, i might float at 3.40Vpc (54.4V battery) to prevent micro cycling (charge, settle, charge, settle... continual thrashing).
View attachment 127694

Thanks! I don’t have my solar panels installed yet but plan to switch that setting soon as I get them up.