Originally Posted by merlinextraligh

I don't really see it worth the effort. The current batteries claim 600 mile range.

On the type of race where a tiny bit of weight savings might be of concern, i.e. long hilly road race, you'd want a fair amount of capacity. So you're "race day battery, you'd still want to cover 100 plus miles racing, plus a warm up, and have a good safety margin built in. I don't see such a battery saving even half of the weight of the normal battery.

The entire rear battery weighs 24 grams, can't find a weight for the front battery, but assume even 50 grams, a race day version of both batteries might save 20-30 grams or an ounce give or take.