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diy solar

Lifepo4 voltage drop recently

Yes, that is all probably very accurate. Except the rover was showing the voltage from the battery I guess, it wasn’t charging “as well”
I am a total newbie here with lithium.
I am learning so much very quickly, and I really appreciate your words because I think I just learned a whole lot more there too‼️
Thank you
I will attach a screenshot if I have one of the moments leading up to me turning off the charger I know it was very low input when I shut it down but less than one amp I cannot say that.
 
Yes, the top charge was 60+ amps and then it gradually went down my chargers green light went on. I kept letting it go and go and go. It was 1:30 in the morning, and I was bagged and decided to shut it down not knowing how detrimental that little extra bit would be until now.
 
This isn’t when I shut the charger off but it’s the last screenshot I took where it shows the parameters.
 

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Echo Dawn said:
decided to shut it down not knowing how detrimental that little extra bit would be until now.
Click to expand...
I wouldn't call it detrimental. If it tapered down to 2.6A over a period of several hours it probably got a decent charge.

Consider this voltage vs SoC chart.
LFP Voltage Chart.jpg

The 2nd chart, 12V Battery Pack, charged to 14.6V is 100%. A very modest load, taking it down to 99% is at 13.5V. This is largely the surface charge being burned off.

From there, the discharge is VERY flat and this is where judging SoC based on voltage becomes more difficult. The first 1% SoC resulted in a 1.1V drop. The next 70% discharge results in roughly .5V drop.
Echo Dawn said:
This isn’t when I shut the charger off but it’s the last screenshot I took where it shows the parameters.
Click to expand...
Still, while being charged, battery voltage measurement is pretty meaningless. From this point, stop the charger for 15 minutes and check the voltage. Then apply a modest 100W load for a few minutes. Remove load and measure.
 
It'd mind boggling that there's four new pages since I last logged on.

I don't have the time to parse all this, so I'll finish with this:

Stop doing things without asking first. Things like hitting the reset button may force the BMS to re-guess SoC based purely on voltage which completely defeats the purpose. 52% @ ~3.302V cell voltage under load is not particularly accurate, but based on these values, it's consistent with a guess, i.e., 3.302V is between 50 and 60%, but closer to 50%:

1711393541414.png

Your rapid fire posts and emotional swings make helping you almost impossible.

The ONLY problem I see here is user error/bad practices. There may be other issues, but until you slow down, listen and stop doing things randomly, you're not going to get help.
 
Can anybody tell me if this adds up as the right voltage, considering the amount of draw?
 

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This is right now
The previous photo was first thing this morning. So now I won’t touch anything lol like I did first thing this morning lol.😂
 

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Is it safe to leave the solar switched on and to put load back on the system now or is it finished or not finished final charging stuff?
 
I’ll let y’all know if this worked out and solved my very obvious voltage issue.

Thank you absolutely everybody who helped I really have appreciated every word everybody said, and no argument here on the constructive criticism I use it all for the best‼️
Cheers 🧇🍻🍻🍻🍻
 
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