[EVfun]

I am currently using Thundersky 60 amp hour cells so size 6 looks attractive to me. I think each battery manufacturer will find their product more accepted (more sales) if they work with the existing sizes being made. It makes the product more interchangeable, like the way standard group sizes do for lead acid batteries.

 

[EVfun]

The new module 100/160/200, there are no higher than 9 inch, and they can easliy replace the lead acid, like 100AH for group 31, 200AH for 4-D, 8-D, 160AH for group 31, 4-D, or T-105.

It is needed that LifePO4 battery suitable for common lead acid battery size replace, for more ecnomic and easy acceptable.

I have to agree with JRP3, I don't think you need to copy lead acid sizes. Lithium batteries can generate their own new size standards because they will be so much smaller for a given battery pack capacity. One exception to that may be the Golf Cart battery sizes (GC-1, like the T-105) because there is such a large installed base of a single size. Those are used in more than golf carts and old EVs.

 

[EVfun]

I think you misunderstand Kevin's message. They are not copying LA size, but they want to conform to at least 2 dimesions of common BCI Group sizes and then let 3rd dimesion be whatever it is based on LFP density.

No misunderstanding, I think we all understood the message to mean sizes that allow a battery (group of cells) to be assembled in a box originally designed for golf cart batteries. A lithium replacement for GC lead is going to be either much smaller or much higher capacity than the pack it replaces.