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
StirCrazy wrote:3 tons wrote:
“ 3 tons the quote from the article qualifies itself:”
“Qualifies itself” how so??
BattleBorn (and every other LFP offering I’ve seen), clearly state that LiFePo4’s can be discharged to -4f, with no suggestion or implication otherwise - are we to dismiss this?? In proper context, ALL chemistries tend to get sluggish in *below freezing temps (a no brainer), so this is precisely why context matters!!
*with the possible exception of SiO2, though curiously, I’ve not found an independent (i.e. non-vendor) white paper on SiO2.batteries...
3 tons
No at 0C and below Sio2 still lose a large chunk of there capacity, actualy more than LFP but they work to a much lower temp. the graphs are out there. they dont lose as much capacity as Lead acid but lose more than LFP so there in between. still a good option if weight size are not issues and temp is. but I think if some one decided to go SiO2 they should change out there chargers also as there is no sulfication (sp) with SiO2 so will the desulphacation setting dammage them? Mind you I think anyone investing in batteries should also be investing in the charging system by having one that you can customize the settings and taylor them to your battery type. I always laugh when I see some one spending 1 or 2000 bucks on batteries but wont spend 200 bucks to hange out the charger section of the converter or there solare controler.
Steve
Agreed, those are all great points Steve, kudos Sir, I can see that you’re doing your all important homework!...I definitely see SiO2’s as a viable consideration, though it’s not been made clear what kind of SOC metering is compatible - nor sure about equalizations - maybe you have a white paper?
From the little I do know, PT is going with SiO2’s (mostly due to -40d temps), and in balance he’s surely making a great choice...
As far as LFP charging goes, I’m able to easily do this using a standard Progressive Dynamics 9245 using the optional Charge Wizard pendant set to Boost mode...Post BMS balancing regime (as verified via Victron BMV-12) I simply defeat the charger...
3 tons
