For BFL13 et al... FLA vs AGM vs Li vs heated Li
I have no dog in this discussion. Just passing the info: https://www.youtube.com/watch?v=iy3hga_P5YY Interesting!
Forum Discussion
One of the video's sales tricks was to say how much more energy the BB LFP had than all those other non-LFP losers, and then not using the AH.
Another blurb I was reading said the LFP had about 150 vs 30 (units?) of "energy density" than FLA. but we use AH not energy.
The video also claimed the FLAs did not have their supposed AHs in them. That will come as a surprise to my Trimetric monitor, which has shown a good correlation between AH count and "resting voltage" for SOC for my various batteries over the years, and I get expected AH for the battery ratings.
I have seen "12.2" at half the rated AHs lots of times. The video guys claimed this was never going to happen. (I think that was what they said--it was all so bogus, hard to tell)
Apparently those guys could use a Trimetric monitor so they would not be so "confused" (to put it politely)! :(
I think the energy advantage has to do with the high discharge rate of LFPs but not clear on that. For ordinary RV loads it doesn't change how running a 10 amp load for an hour comes to 10AH out of your 100AH batt, whether it is FLA, AGM, or LFP. 10AH is 10AH from 100AH every time.
It reminds me of how the MPPT salesmen like to say the PWM controller wastes energy. They don't want to compare amps to the battery. ( PWM could care less about the energy--it does amps.)
Talking about energy instead of amps to the battery, and AH is what I call "smoke and mirrors".
IMO a good case for LFPs can be made for some scenarios without all the silly stuff.
Another blurb I was reading said the LFP had about 150 vs 30 (units?) of "energy density" than FLA. but we use AH not energy.
The video also claimed the FLAs did not have their supposed AHs in them. That will come as a surprise to my Trimetric monitor, which has shown a good correlation between AH count and "resting voltage" for SOC for my various batteries over the years, and I get expected AH for the battery ratings.
I have seen "12.2" at half the rated AHs lots of times. The video guys claimed this was never going to happen. (I think that was what they said--it was all so bogus, hard to tell)
Apparently those guys could use a Trimetric monitor so they would not be so "confused" (to put it politely)! :(
I think the energy advantage has to do with the high discharge rate of LFPs but not clear on that. For ordinary RV loads it doesn't change how running a 10 amp load for an hour comes to 10AH out of your 100AH batt, whether it is FLA, AGM, or LFP. 10AH is 10AH from 100AH every time.
It reminds me of how the MPPT salesmen like to say the PWM controller wastes energy. They don't want to compare amps to the battery. ( PWM could care less about the energy--it does amps.)
Talking about energy instead of amps to the battery, and AH is what I call "smoke and mirrors".
IMO a good case for LFPs can be made for some scenarios without all the silly stuff.
