this is why
Hi Folks, This is why Li batteries are not a good fit for me. https://weather.gc.ca/city/pages/sk-32_metric_e.html -40 on Wednesday night.
Forum Discussion
SiO2 are much better than regular AGM, which are better than flooded. They have little or none of the monkey business needed for Li chemistries.
There is only one Li chemistry (Lithium Titinate) that would meet my weather needs (not wishes), but it is $1800 per 100 amp-hours, and many would be required because the recommended discharge rate is rather low. SiO2 can do 4C continuously.
Li are not well suited to cold except for the aforementioned above.
I fail to see how I could warm li batteries up to where they could be charged without using shore power, or a generator. Physical space will only allow 7 group 29 jars. Li are not that much smaller in dimension, and for MAXIMUM cycle life really only have 50% usable (40% to 90%).
Li do not love to be float charged. That means adding complications to the solar charging system for storage. SiO2 don't mind float at all.
I believe LI are a excellent battery for the middle of USA. Farther south things get a little complicated as LI apparently dislike high temperatures.
There is only one Li chemistry (Lithium Titinate) that would meet my weather needs (not wishes), but it is $1800 per 100 amp-hours, and many would be required because the recommended discharge rate is rather low. SiO2 can do 4C continuously.
Li are not well suited to cold except for the aforementioned above.
I fail to see how I could warm li batteries up to where they could be charged without using shore power, or a generator. Physical space will only allow 7 group 29 jars. Li are not that much smaller in dimension, and for MAXIMUM cycle life really only have 50% usable (40% to 90%).
Li do not love to be float charged. That means adding complications to the solar charging system for storage. SiO2 don't mind float at all.
I believe LI are a excellent battery for the middle of USA. Farther south things get a little complicated as LI apparently dislike high temperatures.