New lithium battery charge settings

[Simonbr]

First weekend back at camp and I installed my new 24v 300aH lifepo4 battery. I set my MidNite classic 150 for 28.8v eq and absobtion, 27.6v float, 0 minutes for eq time. Not sure if this correct. There are also the absorption charge time and ending bulk amps at 5.4a.

What is the recommended settings. It seems if I go to forums post that are older there settings have changed since then.

Also I updated my bms capacity voltage settings according to the supplier and not sure it makes sense. They made me change 60% to 100% to 3340mv

 

[Steve_S]

SEE THIS LINK:

Steve_S-Tech: My Final Config for Midnite Classic SCC & JKBMS' w/ Large Bank (works amazingly well) Includes Charge Profile & BMS Config

INTRO: I have debated posting this for a while until I got everything tweaked in and working as best as possible. The End Result is Gobsmackingly Good ! I cannot speak for other SCC and such as each is different & unique in their own ways BUT this may likely be a Good Reference. Civility &...

diysolarforum.com

Your EndAmps = 15A

Here is an LFP Chart that may be handy for you. NOTE THE VOLTAGES !
LFP @ 100% = 3.400 Volts per cell. The suggestion is to Charge to 3.450V to EndAmps then Float at 3.437vpc to allow for the natural settling while the cells balance out & top off.

 

[Simonbr]

Thank you for this info. So for now I set my charge and eq to 27.6v, eq Tim’s to 0 so this basically disables it, float to 27.5v and my end amps to 15a. What should I set the charge time to? I had it for 15 minutes but changed it to 2 hours now.

As for the BMS settings, the capacity voltage is it just to display the SOC or is it also used to control how the charge is working? If I’m trying to charge to 3.45v per cell will setting the 100% as 3400mV not allow it to reach the 3.45V?