new non sulphating battery from Soneil
It can be used at -40 C 1/3 the cost of Li 80% depth of discharge 1500 cycles https://soneil.com/wp-content/uploads/2018/07/12-EFSL-185.pdf
Forum Discussion
pnichols wrote:
The price you show for the heavy Soneil is getting into lithium range, but of course lithium batteries still have a problem that I can't accept even if I could accept their pricing ... as I understand it lithiums can't, or shouldn't, be recharged in low ambient temperatures. :h
Are talking about outside temps or cell temps? Unless your battery is outside unprotected why worry.
I've seen outside temps as low as 25f with my front unheated compartment (other than my inverter/ charger & solar controller throwing a little heat) at 40f +/- and cell temps 45-50f. Using the batteries will warm the cells. Now if temps were dropping into the single digits for an extended time a warming pad or just covering the batteries helps hold them warmer. Just my observations from living off of solar/ lfp 24/7/365 for the past 3 years. Besides longterm psoc won't hurt them. ;)
