Lithium Confusion
I currently store my coach in my garage plugged into 30 amp service. My new coach came with lead acid batteries. The coach has a progressive dynamics PD 4060 charger in a mighty mini power center. ...
Forum Discussion
pianotuna wrote:Freep wrote:pianotuna wrote:
Unfortunately I need -40. There is at least one LI chemistry that can do that--but nothing in a large format jar. Lithium titanate
Do you really need -40? Do you have no water in your rig, only ice?
-40 will kill Li batteries. I've boondocked at -37 c (-34 f). That temperature will also kill Li.
I've since found a battery chemistry called SiO2 which shares many of the attributes of Li. The differences that I'm aware of at weight (greater than a similar capacity lead acid) and the ability to be used and charged at -40. Some of the shared items are no sulphation, and zero maintenance. That means no more needing to get to 100% state of charge.
The SiO2 is about 1/2 the price of Li. It can "do" 900 amps for 5 seconds from a 100 amp jar, which I think is better than Li.
Cycle life is 2800 if you don't go below 50% soc, and 1500 if you go down to 20% soc.
Best of all, the SiO2 are sold in Canada. $600 ($450 usd) for 100 amp-hours. This is a competitive price with AGM.
Mount the batteries inside the trailer?
