Very interesting and informative thread. Read the whole dang thing!!
Most of my batteries last between four and six years (all in ICE vehicles). I had one anomoly, a Mazda Miata in which I replaced my AGM battery after NINE YEARS!! And it was still working but I figured, nah, it’s gotta die any day now. The battery used in the Miata was the very same size battery which was used in my BMW R1100R motorcycle.
Not sure if this is the exact battery mentioned in this thread for $150 dollars. Found it on Amazon for $115:
Shorai LifeP04, Power Sports Battery / 12V 10-14(Ah) 240 Cold Cranking Amps (CCA):https://www.amazon.com/LiFePO4-12V-10-1 ... ts+battery
Here’s a Battery Tender model, which is larger capacity, $210 dollars:
Battery Tender BTL35A480C Lithium Iron Phosphate Battery / (12V, 26-35Ah, 480 ICA, 102.4 Watt Hrs.)
-- Caution: Quite a few reviewers report poor customer service from Battery Tender! --https://www.amazon.com/Battery-Tender-B ... ts+battery
To drive everyone just a bit crazier, here's what popped-up on Amazon for "lithium car battery"https://www.amazon.com/s/ref=nb_sb_ss_i ... MK9N7AYWTS