Daly BMS gone crazy..Update Opinions
I was charging my 120ah lifepo4 battery yesterday and came in for lunch and saw it shut down..I figured it hit the 3.65 volt cell limit and shut down,I went out to check it and saw this on the Blueto...
Forum Discussion
You need an AH counting monitor to know ("well enough") your SOC when operating the LFP bank, because of the flat voltage curve. So you do need a way to zero that AH counter so it stays fairly accurate.
So even when operating while "avoiding the knees" as seems wise, you do still need to do a full recharge every so often to zero the monitor even though the battery may not need it as often. They do say to recharge to full every so often though and not for the monitor's sake.
It would be convenient if the two "every so oftens" occurred at the same intervals.
Knowing when the monitor is out of whack is another question with LFP. With FLA and AGM you compare AH count with (close to ) resting voltage and use the voltage/SOC table for your battery.
With LFP flat voltages how can you do that? What do you use as the cross-check? Itinerant1 mentioned something about his set-up being able to do that, not clear how, and how anybody without his elaborate set-up can do it.
So even when operating while "avoiding the knees" as seems wise, you do still need to do a full recharge every so often to zero the monitor even though the battery may not need it as often. They do say to recharge to full every so often though and not for the monitor's sake.
It would be convenient if the two "every so oftens" occurred at the same intervals.
Knowing when the monitor is out of whack is another question with LFP. With FLA and AGM you compare AH count with (close to ) resting voltage and use the voltage/SOC table for your battery.
With LFP flat voltages how can you do that? What do you use as the cross-check? Itinerant1 mentioned something about his set-up being able to do that, not clear how, and how anybody without his elaborate set-up can do it.
