Daly BMS gone crazy..Update Opinions

BFL13 wrote:
Not sure that article is accepted by the LFP owners here, but it rings true to me FWIW. Doing research, you know not to just read one author on any subject. You have to read several and get a feel for what is most likely. Papers have a similar rule about needing more than one source before printing a story.

I am on about monitors and how to zero them here because the OP could use that before deciding on the rest of his set-up.

Since it is important to operate avoiding the lower knee especially, and you want to exploit the LFP's lower SOC operating range (that you paid for!) you need to know when you are getting down to that lower knee with some accuracy. That is what the AH counting monitor is for, but it needs to be zeroed to stay accurate enough to do that for you.

A separate issue is avoiding the upper knee if that is the plan, when you have solar. Seems like you will be going past the upper knee quite often with solar. You can set the solar Vabs under the dreaded 14.6v, but how can you turn it off if you get to the top mid-day? Different issue though.

BLF13 I read your posts about lfp "issue" that you think are issue but aren't. I think comes from your lead battery world of thinking and not having any hands on experience other than what some web site says and these threads but not grasping the ease of the chemistry with proper charging settings.

I'm using nothing special for charging other than Magnum equipment with end user adjustable settings for daily operations and the batteries bms for last resort fail safes. But then I only have over 1,600 cycles of 35-45% DODs drawing 150-200a load at any SOC in the past 5 year of full timing.

There is plenty of cheaper components that would do the same for charging and daily use.