[PSUBS-MAILIST] Lithium Batteries

[Alan via Personal_Submersibles]

I have been watching the progress of lithium sulphur & other new lithium
battery technologies & they seem to be inching closer to commercialisation 
with a few break throughs recently.
There are figures of 700 W/L ( Watts per Litre) being touted.
Lead acid have an energy density of 80 W/L & they recommend not discharging
them below 50%, so 40 W/L. Lithium batteries have a depth of discharge of 80%   
so in the case of the 700 W/L battery that would be 560 W/L available.
This means 14 X more power available for the same amount of space using the
new lithium technology.
https://www.greencarcongress.com/2020/03/20200315-sion.html
It might be worth keeping in mind for future builds, as it may make things like
air conditioning & extra or larger motors a more viable consideration.
I know they have always said that the lithium sulphur batteries will be cheaper
than lead acid on a W/L basis.
Below is a chart showing comparisons between lead acid & a standard lithium
ion battery.
Alan



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