pianotuna wrote:
KendallP,
Nothing wrong with Li until 0 C. Then dendrites may easily form.
There is one Li subset called Lithium Titinate that can be used in the cold. I got a quote for a single 100 amp-hour jar. It was a mere $1890.00 (cdn).
Here are the "straight good" from an Li seller:
https://www.solacity.com/how-to-keep-lifepo4-lithium-ion-batteries-happy/
The highlights from the above are:
This is the summary from the article:
"To sum up, for long and happy LFP battery life, in order of importance, you should be mindful of the following:
Keep the battery temperature under 45 C (113 f) (under 30C if possible (86 f)) – This is by far the most important!
Keep charge and discharge currents under 0.5C (0.2C preferred)
Keep battery temperature above 0 C (32 f) when discharging if possible
– This, and everything below, is nowhere near as important as the first two
Do not cycle below 10% – 15% SOC unless you really need to
Do not float the battery at 100% SOC if possible
Do not charge to 100% SOC if you do not need it"
It can get up near 110 on occasion at home base. And 115 down in Redding, CA. Let alone the actual battery temp
Above freezing for discharging? I hadn't read that.
Now floating is a bit of a problem. This would mean I would have to manually disconnect the charger/inverter while in storage or even while parked and on shore power with a full bank. And here again... the Freedom is temp compensating... though I believe I can defeat that.
