BFL13 wrote:
Trillium guide linked earlier and your post about BMS.
I got my SiO2 in October, and local LFPs were and are still high priced for drop-ins.
Things are getting better for LFP pricing according to reports on this forum. Local pricing depends on what the dealers' costs were when they got them for how much they can lower them if forced to by the market.
eg, http://www.wegosolar.com/categories.php?........ory=Deep-Cycle-Batteries/CAN-BAT-Lithium
I saw that one PT recently posted at a very low price for LFP.
well the BMS website doesnt talk about tempature variations, and neither does any LiFepo4 spec sheet I have seen so that might just be a trillium thing. but thinking about it why does that matter, if you put the battery bank inside the heated rv then it becomes a non issue, as as far as I know it is a non issue with LiFeP04, unless I can find something that says other wise but nothing mentions anything with cold charging except don't do it under 0C.
I keep looking but I have read through several papers and several sights now and none mention that. also if it was an issue none of this is dealing with the tempature outside, but rather the actual tempature of the battery its self. I have also read of people when it is -4 or 5 out they put a load on the battery and it has warmed it up so the battery was above 0 then they could start charging it and the charge curent warmed it up further but thats not what we are looking for here and I am digressing. just remember trillium is a different tech than Lfp and has different requirments and such, just like niCad has totaly different peramiters than LFP and so on.
Steve