Lithium Ion vs Lead Acid

pianotuna wrote:
Hi,

400 amp-hours is getting within striking distance. Now, if they would solve the cold weather recharge problem......

Well these are LiFeYPo4 and supposedly much more well behaved across a wider temperature band than other flavors. Not sure I believe their apparent -45C - 85C charge and or discharge operating temp as indicated here:

Winston 400Ah cells