<html><head><meta http-equiv="content-type" content="text/html; charset=us-ascii"></head><body dir="auto"><div><span></span></div><div><meta http-equiv="content-type" content="text/html; charset=us-ascii">I have been watching the progress of lithium sulphur & other new lithium<div>battery technologies & they seem to be inching closer to commercialisation </div><div>with a few break throughs recently.<div>There are figures of 700 W/L ( Watts per Litre) being touted.</div><div>Lead acid have an energy density of 80 W/L & they recommend not discharging</div><div>them below 50%, so 40 W/L. Lithium batteries have a depth of discharge of 80% </div><div>so in the case of the 700 W/L battery that would be 560 W/L available.</div><div>This means 14 X more power available for the same amount of space using the</div><div>new lithium technology.</div><div><a href="https://www.greencarcongress.com/2020/03/20200315-sion.html">https://www.greencarcongress.com/2020/03/20200315-sion.html</a></div><div>It might be worth keeping in mind for future builds, as it may make things like</div><div>air conditioning & extra or larger motors a more viable consideration.</div><div>I know they have always said that the lithium sulphur batteries will be cheaper</div><div>than lead acid on a W/L basis.</div><div>Below is a chart showing comparisons between lead acid & a standard lithium</div><div>ion battery.</div><div>Alan</div><div><img src="cid:98E01FA6-7A53-4371-A77C-C1E001B576BB" alt="image1.PNG" id="98E01FA6-7A53-4371-A77C-C1E001B576BB"><br></div><div><br></div><div><br></div></div></div></body></html>